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Results from an EMSL Arrows Calculation

EMSL Arrows is a revolutionary approach to materials and chemical simulations that uses NWChem and chemical computational databases to make materials and chemical modeling accessible via a broad spectrum of digital communications including posts to web APIs, social networks, and traditional email.

Molecular modeling software has previously been extremely complex, making it prohibative to all but experts in the field, yet even experts can struggle to perform calculations. This service is designed to be used by experts and non-experts alike. Experts can carry out and keep track of large numbers of complex calculations with diverse levels of theories present in their workflows. Additionally, due to a streamlined and easy-to-use input, non-experts can carry out a wide variety of molecular modeling calculations previously not accessible to them.



The id(s) for emsiles = [Si][Si] theory{pspw4} xc{lda} basis{100.0 Ry} solvation_type{None} ^{0} are: 66642 
Use id=% instead of esmiles to print other entries.

mformula     = Si2
iupac        = lambda3-silanylidynesilicon
PubChem      = 6327126
PubChem LCSS = 6327126
cas          = 1590-87-0
synonyms     = disilicon; 1590-87-0; lambda3-silanylidynesilicon; Disilicon dihydride; UNII-L4684339WI; L4684339WI; Silicon dimer; EINECS 216-466-5; SiH2=SiH2; Disilane, electronic grade; Disilene-1,2-diylideneradical; CHEBI:30590; DTXSID40166558; DTXSID50165597; MFCD00054678; AKOS025294629; FT-0693256; J-700172; Q27113884; 12597-35-2; 36835-58-2; SI2

Search Links to Other Online Resources (may not be available):
 - Google Structure Search
 - EPA CompTox Database
 - Chemical Entities of Biological Interest (ChEBI)
 - NIH ChemIDplus - A TOXNET DATABASE
 - The Human Metabolome Database (HMDB)
 - OECD eChemPortal
 - Google Scholar



+==================================================+
||              Molecular Calculation             ||
+==================================================+

Id     = 66642

NWOutput = Link to NWChem Output (download)

Datafiles:
density.cube-34021-2021-11-20-16:48:39 (download)
homo-restricted.cube-34021-2021-11-20-16:48:39 (download)
lumo-restricted.cube-34021-2021-11-20-16:48:39 (download)

image_resset: api/image_reset/66642

Calculation performed by Eric Bylaska - constance.pnl.gov
Numbers of cpus used for calculation = 48
Calculation walltime = 356.800000 seconds (0 days 0 hours 5 minutes 56 seconds)


+----------------+
| Energetic Data |
+----------------+

Id       = 66642 
iupac    = lambda3-silanylidynesilicon
mformula = Si2
inchi    = InChI=1S/Si2/c1-2
inchikey = NTQGILPNLZZOJH-UHFFFAOYSA-N
esmiles  = [Si][Si] theory{pspw4} xc{lda} basis{100.0 Ry} solvation_type{None} ^{0}
calculation_type = ov
theory           = pspw4
xc               = lda
basis            = 100.0 Ry
charge,mult      = 0 1
energy           =      -7.669228 Hartrees
enthalpy correct.=       0.004618 Hartrees
entropy          =         54.209 cal/mol-K
solvation energy =          0.000 kcal/mol  solvation_type = None
Sitkoff cavity dispersion          =          0.000 kcal/mol
Honig cavity dispersion            =          0.000 kcal/mol
ASA solvent accesible surface area =          0.000 Angstrom2
ASA solvent accesible volume       =          0.000 Angstrom3



+-----------------+
| Structural Data |
+-----------------+

JSmol: an open-source HTML5 viewer for chemical structures in 3D


  Number of Atoms = 2
 
  Units are Angstrom for bonds and degrees for angles

      Type          I     J     K     L     M      Value
      ----------- ----- ----- ----- ----- ----- ----------
    1 Stretch       Si1   Si2                      2.28698

 
+-----------------+
| Eigenvalue Data |
+-----------------+

Id       = 66642
iupac    = lambda3-silanylidynesilicon
mformula = Si2
InChI    = InChI=1S/Si2/c1-2
smiles   = [Si][Si]
esmiles  = [Si][Si] theory{pspw4} xc{lda} basis{100.0 Ry} solvation_type{None} ^{0}
theory   = pspw4
xc       = lda
basis    = 100.0 Ry
charge   = 0
mult     = 1
solvation_type = None

twirl webpage  = TwirlMol Link
image webpage  = GIF Image Link

          Eigevalue Spectra
                ----  ----    0.53 eV                                      
                ----------                                                 
                                                                           
                ----------                                                 
                ----------                                                 
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                ----------                                                 
                                                                           
                ----------                                                 
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
HOMO=  -5.11 eV ++++  ++++                                                 
                ---------- LUMO=  -5.59 eV                                 
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                ++++++++++                                                 
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
      -12.83 eV ++++++++++                                                 



spin            eig      occ
----------------------------
restricted    -5.11     2.00
restricted    -5.19     2.00
restricted    -9.17     2.00
restricted   -12.83     2.00
restricted     0.53     0.00
restricted     0.51     0.00
restricted     0.37     0.00
restricted    -0.20     0.00
restricted    -0.53     0.00
restricted    -2.56     0.00
restricted    -2.96     0.00
restricted    -5.59     0.00
 
+----------------------------------------+
| Vibrational Density of States Analysis |
+----------------------------------------+

Total number of frequencies = 6
Total number of negative frequencies = 0
Number of lowest frequencies = 1 (frequency threshold = 500 )
Exact dos norm = 0.000

Generating vibrational DOS
Generating model vibrational DOS to have a proper norm
10.00 1.00 1.00 0.00


50.00 1.00 1.00 0.00


100.00 1.00 1.00 0.00


Generating IR Spectra
Writing vibrational density of states (DOS) to vdos.dat
Writing model vibrational density of states (DOS_FIXED) to vdos-model.dat

Writing IR spectra to irdos.dat
Temperature= 298.15 

zero-point correction to energy                 =    0.669 kcal/mol (  0.001066)
vibrational contribution to enthalpy correction =    0.825 kcal/mol (  0.001315)
vibrational contribution to Entropy             =    0.742 cal/mol-k

hindered rotor enthalpy correction              =    0.000 kcal/mol (  0.000000)
hindered rotor entropy correction               =    0.000 cal/mol-k





DOS sigma = 10.000000
  -       vibrational DOS enthalpy correction =   0.001315 kcal/mol (   0.825 kcal/mol)
  - model vibrational DOS enthalpy correction =   0.000000 kcal/mol (   0.000 kcal/mol)
  -       vibrational DOS Entropy             =   0.000001 (   0.743 cal/mol-k)
  - model vibrational DOS Entropy             =   0.000000 (   0.000 cal/mol-k)

  - original      gas Energy       =    -7.669228 (-4812.513 kcal/mol)

  - original      gas Enthalpy     =    -7.664610 (-4809.615 kcal/mol, delta=   0.000)
  - unajusted DOS gas Enthalpy     =    -7.664610 (-4809.615 kcal/mol, delta=   0.000)
  - model     DOS gas Enthalpy     =    -7.665924 (-4810.440 kcal/mol, delta=  -0.825)

  - original      gas Entropy      =     0.000086 (  54.209 cal/mol-k,delta=   0.000)
  - unajusted DOS gas Entropy      =     0.000086 (  54.210 cal/mol-k,delta=   0.001)
  - model     DOS gas Entropy      =     0.000085 (  53.467 cal/mol-k,delta=  -0.742)

  - original       gas Free Energy =    -7.690366 (-4825.778 kcal/mol, delta=   0.000)
  - unadjusted DOS gas Free Energy =    -7.690366 (-4825.778 kcal/mol, delta=  -0.000)
  - model      DOS gas Free Energy =    -7.691328 (-4826.381 kcal/mol, delta=  -0.604)

  - original       sol Free Energy =    -7.690366 (-4825.778 kcal/mol)
  - unadjusted DOS sol Free Energy =    -7.690366 (-4825.778 kcal/mol)
  - model      DOS sol Free Energy =    -7.691328 (-4826.381 kcal/mol)

DOS sigma = 50.000000
  -       vibrational DOS enthalpy correction =   0.001317 kcal/mol (   0.827 kcal/mol)
  - model vibrational DOS enthalpy correction =   0.000000 kcal/mol (   0.000 kcal/mol)
  -       vibrational DOS Entropy             =   0.000001 (   0.756 cal/mol-k)
  - model vibrational DOS Entropy             =   0.000000 (   0.000 cal/mol-k)

  - original      gas Energy       =    -7.669228 (-4812.513 kcal/mol)

  - original      gas Enthalpy     =    -7.664610 (-4809.615 kcal/mol, delta=   0.000)
  - unajusted DOS gas Enthalpy     =    -7.664607 (-4809.613 kcal/mol, delta=   0.002)
  - model     DOS gas Enthalpy     =    -7.665924 (-4810.440 kcal/mol, delta=  -0.825)

  - original      gas Entropy      =     0.000086 (  54.209 cal/mol-k,delta=   0.000)
  - unajusted DOS gas Entropy      =     0.000086 (  54.223 cal/mol-k,delta=   0.014)
  - model     DOS gas Entropy      =     0.000085 (  53.467 cal/mol-k,delta=  -0.742)

  - original       gas Free Energy =    -7.690366 (-4825.778 kcal/mol, delta=   0.000)
  - unadjusted DOS gas Free Energy =    -7.690370 (-4825.780 kcal/mol, delta=  -0.002)
  - model      DOS gas Free Energy =    -7.691328 (-4826.381 kcal/mol, delta=  -0.604)

  - original       sol Free Energy =    -7.690366 (-4825.778 kcal/mol)
  - unadjusted DOS sol Free Energy =    -7.690370 (-4825.780 kcal/mol)
  - model      DOS sol Free Energy =    -7.691328 (-4826.381 kcal/mol)

DOS sigma = 100.000000
  -       vibrational DOS enthalpy correction =   0.001326 kcal/mol (   0.832 kcal/mol)
  - model vibrational DOS enthalpy correction =   0.000000 kcal/mol (   0.000 kcal/mol)
  -       vibrational DOS Entropy             =   0.000001 (   0.800 cal/mol-k)
  - model vibrational DOS Entropy             =   0.000000 (   0.000 cal/mol-k)

  - original      gas Energy       =    -7.669228 (-4812.513 kcal/mol)

  - original      gas Enthalpy     =    -7.664610 (-4809.615 kcal/mol, delta=   0.000)
  - unajusted DOS gas Enthalpy     =    -7.664599 (-4809.608 kcal/mol, delta=   0.007)
  - model     DOS gas Enthalpy     =    -7.665924 (-4810.440 kcal/mol, delta=  -0.825)

  - original      gas Entropy      =     0.000086 (  54.209 cal/mol-k,delta=   0.000)
  - unajusted DOS gas Entropy      =     0.000086 (  54.267 cal/mol-k,delta=   0.058)
  - model     DOS gas Entropy      =     0.000085 (  53.467 cal/mol-k,delta=  -0.742)

  - original       gas Free Energy =    -7.690366 (-4825.778 kcal/mol, delta=   0.000)
  - unadjusted DOS gas Free Energy =    -7.690382 (-4825.788 kcal/mol, delta=  -0.010)
  - model      DOS gas Free Energy =    -7.691328 (-4826.381 kcal/mol, delta=  -0.604)

  - original       sol Free Energy =    -7.690366 (-4825.778 kcal/mol)
  - unadjusted DOS sol Free Energy =    -7.690382 (-4825.788 kcal/mol)
  - model      DOS sol Free Energy =    -7.691328 (-4826.381 kcal/mol)



Normal Mode    Frequency (cm-1)     IR Intensity (arbitrary)
-----------    ----------------     ------------------------
          1              -0.000                        1.686
          2              -0.000                        0.901
          3               0.000                       54.674
          4               0.000                        0.900
          5               0.000                        1.687
          6             468.140                        0.152


No Hindered Rotor Data


+-------------------------------------+
| Reactions Contained in the Database |
+-------------------------------------+

Reactions Containing INCHIKEY = NTQGILPNLZZOJH-UHFFFAOYSA-N

Reactionid    Erxn(gas)    Hrxn(gas)    Grxn(gas)   delta_Solv     Grxn(aq) ReactionType             Reaction
      9482       48.107       48.034       42.577        1.250       43.827 AB --> A + B             "[Si][Si] xc{b3lyp} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{b3lyp} basis{Def2-TZVPD}"
      9477       60.500       61.388       55.939        0.840       56.779 AB --> A + B             "[Si][Si] xc{blyp} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{blyp} basis{Def2-TZVPD}"
      9472       48.761       48.662       43.186        1.700       44.886 AB --> A + B             "[Si][Si] xc{pbe0} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{pbe0} basis{Def2-TZVPD}"
      9467       61.950       62.838       57.383        0.730       58.113 AB --> A + B             "[Si][Si] xc{pbe} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{pbe} basis{Def2-TZVPD}"
      9462       75.872       76.760       71.295        0.880       72.175 AB --> A + B             "[Si][Si] xc{lda} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{lda} basis{Def2-TZVPD}"
      9455       56.726       57.614       52.147        0.000       52.147 AB --> A + B             "[Si][Si] theory{pspw4} xc{b3lyp} --> 2 [Si] mult{3} theory{pspw4} xc{b3lyp}"
      9454       56.366       57.254       51.785        0.000       51.785 AB --> A + B             "[Si][Si] theory{pspw} xc{b3lyp} --> 2 [Si] mult{3} theory{pspw} xc{b3lyp}"
      9453       45.402       45.342       39.895        1.510       41.405 AB --> A + B             "[Si][Si] xc{b3lyp} --> 2 [Si] mult{3} xc{b3lyp}"
      9367       74.022       74.910       69.426        0.000       69.426 AB --> A + B             "[Si][Si] mult{3} theory{pspw4} xc{b3lyp} --> 2 [Si] mult{3} theory{pspw4} xc{b3lyp}"
      9366       73.728       74.616       69.131        0.000       69.131 AB --> A + B             "[Si][Si] mult{3} theory{pspw} xc{b3lyp} --> 2 [Si] mult{3} theory{pspw} xc{b3lyp}"
      9365       71.173       71.155       65.783       -1.680       64.103 AB --> A + B             "[Si][Si] mult{3} xc{b3lyp} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{b3lyp} basis{Def2-TZVPD}"
      9364       68.906       68.899       63.538       -1.530       62.008 AB --> A + B             "[Si][Si] mult{3} xc{b3lyp} --> 2 [Si] mult{3} xc{b3lyp}"
      9350       75.972       76.859       71.390        0.000       71.390 AB --> A + B             "[Si][Si] mult{3} theory{pspw4} xc{blyp} --> 2 [Si] mult{3} theory{pspw4} xc{blyp}"
      9349       75.977       76.865       71.396        0.000       71.396 AB --> A + B             "[Si][Si] mult{3} theory{pspw} xc{blyp} --> 2 [Si] mult{3} theory{pspw} xc{blyp}"
      9348       74.524       74.528       69.183       -1.670       67.513 AB --> A + B             "[Si][Si] mult{3} xc{blyp} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{blyp} basis{Def2-TZVPD}"
      9347       72.311       72.323       66.990       -1.480       65.510 AB --> A + B             "[Si][Si] mult{3} xc{blyp} --> 2 [Si] mult{3} xc{blyp}"
      9333       77.183       77.200       71.898        0.000       71.898 AB --> A + B             "[Si][Si] mult{3} theory{pspw4} xc{pbe0} --> 2 [Si] mult{3} theory{pspw4} xc{pbe0}"
      9332       76.853       76.867       71.561        0.000       71.561 AB --> A + B             "[Si][Si] mult{3} theory{pspw} xc{pbe0} --> 2 [Si] mult{3} theory{pspw} xc{pbe0}"
      9331       73.685       73.647       68.257       -1.460       66.797 AB --> A + B             "[Si][Si] mult{3} xc{pbe0} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{pbe0} basis{Def2-TZVPD}"
      9330       71.433       71.402       66.020       -1.410       64.610 AB --> A + B             "[Si][Si] mult{3} xc{pbe0} --> 2 [Si] mult{3} xc{pbe0}"
      9316       81.340       82.228       76.752        0.000       76.752 AB --> A + B             "[Si][Si] mult{3} theory{pspw4} xc{pbe} --> 2 [Si] mult{3} theory{pspw4} xc{pbe}"
      9315       81.345       82.233       76.757        0.000       76.757 AB --> A + B             "[Si][Si] mult{3} theory{pspw} xc{pbe} --> 2 [Si] mult{3} theory{pspw} xc{pbe}"
      9314       81.672       82.560       77.089       -1.750       75.339 AB --> A + B             "[Si][Si] mult{3} xc{pbe} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{pbe} basis{Def2-TZVPD}"
      9313       80.352       81.240       75.773       -1.510       74.263 AB --> A + B             "[Si][Si] mult{3} xc{pbe} --> 2 [Si] mult{3} xc{pbe}"
      9303       93.500       94.388       88.904        0.000       88.904 AB --> A + B             "[Si][Si] mult{3} theory{pspw4} xc{lda} --> 2 [Si] mult{3} theory{pspw4} xc{lda}"
      9302       93.504       94.392       88.907        0.000       88.907 AB --> A + B             "[Si][Si] mult{3} theory{pspw} xc{lda} --> 2 [Si] mult{3} theory{pspw} xc{lda}"
      9301       93.206       93.176       87.792       -1.420       86.372 AB --> A + B             "[Si][Si] mult{3} xc{lda} basis{Def2-TZVPD} --> 2 [Si] mult{3} xc{lda} basis{Def2-TZVPD}"
      9300       91.199       91.177       85.801       -1.460       84.341 AB --> A + B             "[Si][Si] mult{3} xc{lda} --> 2 [Si] mult{3} xc{lda}"
      9149       59.249       60.137       54.684        0.000       54.684 AB --> A + B             "[Si][Si] theory{pspw4} xc{blyp} --> 2 [Si] mult{3} theory{pspw4} xc{blyp}"
      9148       59.255       60.143       54.690        0.000       54.690 AB --> A + B             "[Si][Si] theory{pspw} xc{blyp} --> 2 [Si] mult{3} theory{pspw} xc{blyp}"
      9147       59.135       60.023       54.580        1.120       55.700 AB --> A + B             "[Si][Si] xc{blyp} --> 2 [Si] mult{3} xc{blyp}"
      9106       55.708       56.596       51.120        0.000       51.120 AB --> A + B             "[Si][Si] theory{pspw4} xc{pbe0} --> 2 [Si] mult{3} theory{pspw4} xc{pbe0}"
      9105       55.296       56.184       50.707        0.000       50.707 AB --> A + B             "[Si][Si] theory{pspw} xc{pbe0} --> 2 [Si] mult{3} theory{pspw} xc{pbe0}"
      9104       46.121       46.033       40.565        1.780       42.345 AB --> A + B             "[Si][Si] xc{pbe0} --> 2 [Si] mult{3} xc{pbe0}"
      9077       60.955       61.843       56.383        0.000       56.383 AB --> A + B             "[Si][Si] theory{pspw4} xc{pbe} --> 2 [Si] mult{3} theory{pspw4} xc{pbe}"
      9076       60.961       61.849       56.389        0.000       56.389 AB --> A + B             "[Si][Si] theory{pspw} xc{pbe} --> 2 [Si] mult{3} theory{pspw} xc{pbe}"
      9075       60.656       61.544       56.094        1.000       57.094 AB --> A + B             "[Si][Si] xc{pbe} --> 2 [Si] mult{3} xc{pbe}"
      9024       76.615       77.503       72.034        0.000       72.034 AB --> A + B             "[Si][Si] theory{pspw4} xc{lda} --> 2 [Si] mult{3} theory{pspw4} xc{lda}"
      9023       76.621       77.509       72.040        0.000       72.040 AB --> A + B             "[Si][Si] theory{pspw} xc{lda} --> 2 [Si] mult{3} theory{pspw} xc{lda}"
      9022       74.556       75.444       69.984        0.970       70.954 AB --> A + B             "[Si][Si] xc{lda} --> 2 [Si] mult{3} xc{lda}"


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Link to EMSL Arrows API
More information about EMSL Arrows

KEYWORDs - 
   reaction: :reaction
   chinese_room: :chinese_room
   molecule: :molecule
   nmr: :nmr
   predict: :predict
   submitesmiles: :submitesmiles
   nosubmitmissingesmiles
   resubmitmissingesmiles
   submitmachines: :submitmachines
   useallentries
   nomodelcorrect
   eigenvalues: :eigenvalues
   frequencies: :frequencies
   nwoutput: :nwoutput
   xyzfile: :xyzfile
   alleigs: :alleigs
   allfreqs: :allfreqs

   reactionenumerate:
      energytype:[erxn(gas) hrxn(gas) grxn(gas) delta_solvation grxn(aq)] :energytype
      energytype:[kcal/mol kj/mol ev cm-1 ry hartree au] :energytype
      tablereactions:
         reaction: ... :reaction
         reaction: ... :reaction
         ...
      :tablereactions
      tablemethods:
         method: ... :method
         method: ... :method
         ...
      :tablemethods
   :reactionenumerate


   rotatebonds
   xyzinput:
      label:  :label
      xyzdata:
       ... xyz data ...
      :xyzdata
   :xyzinput


   submitHf: :submitHf
   nmrexp: :nmrexp

   findreplace: old text | new text :findreplace

   listnwjobs
   fetchnwjob: :fetchnwjob
   pushnwjob: :pushnwjob

   printcsv: :printcsv
   printeig: :printeig
   printfreq: :printfreq
   printxyz: :printxyz
   printjobinfo: :printjobinfo
   printnwout: :printnwout
   badids: :badids
   hup_string: 
   database:
   table:
   request_table:
   listallesmiles
   queuecheck                              
This software service and its documentation were developed at the Environmental Molecular Sciences Laboratory (EMSL) at Pacific Northwest National Laboratory, a multiprogram national laboratory, operated for the U.S. Department of Energy by Battelle under Contract Number DE-AC05-76RL01830. Support for this work was provided by the Department of Energy Office of Biological and Environmental Research, and Department of Defense environmental science and technology program (SERDP). THE SOFTWARE SERVICE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE SERVICE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE SERVICE.