WebMO Job Summary

359156: Ethyne (C2H2) Acetylene, Optimize + Vib Freq - Gaussian

Calculated Quantities

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Overview

Quantity Value
Route #N MP2/6-31G(d) OPT FREQ Geom=Connectivity
Stoichiometry C2H2
Symmetry D*H
Basis 6-31G(d)
RHF Energy -76.815386848 Hartree
MP2 Energy -77.066793500462 Hartree
ZPE 0.025733 Hartree
Conditions 298.150K, 1.00000 atm
Internal Energy -77.037841 Hartree
Enthalpy -77.036897 Hartree
Free Energy -77.060297 Hartree
Cv 9.507 cal/mol-K
Entropy 49.250 cal/mol-K
Dipole Moment 0.0000 Debye
Server batch (368875)
CPU time 9.8 sec

Geometry Sequence Energies

Step Energy  
0 -76.8145939492  
1 -76.8153788808  
2 -76.8153868480  
3 -76.8153868480  
4 -76.8153868480  
Animation speed  
Loop  

Rotational Constants

Constant Frequency (GHz) Frequency (cm-1)
a 0.0000000 0.00000000000
b 34.7286262 1.15842227759
c 34.7286262 1.15842227759

Partial Charges

Atom Symbol Charge
1 C -0.282510  
2 C -0.282510  
3 H 0.282510  
4 H 0.282510  

Vibrational Modes

Mode Symmetry Frequency (cm-1) IR (Raman) Intensity Actions
1 PIG 374.9326 0.0000
2 PIG 374.9326 0.0000
3 PIU 748.0762 88.4082
4 PIU 748.0762 88.4082
5 SGG 2001.1420 0.0000
6 SGU 3480.0582 84.9713
7 SGG 3568.2769 0.0000
Frequency Scale Factor
Normal Mode Amplitude
Animation Speed
IR Spectrum  
Peak Width (cm-1)

Quote

IF YOU PERCEIVE THAT THERE ARE FOUR POSSIBLE WAYS IN WHICH A PROCEDURE CAN GO WRONG AND CIRCUMVENT THESE, THEN A FIFTH WAY WILL DEVELOP. -- MURPHY'S TWELFTH LAW