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All results from a given calculation for C2H6 (Ethane)

using model chemistry: CCSD/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at CCSD/CEP-31G*
 hartrees
Energy at 0K-14.750519
Energy at 298.15K-14.756417
HF Energy-14.464439
Nuclear repulsion energy26.166205
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD/CEP-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1g 3051 2878 0.00      
2 A1g 1456 1374 0.00      
3 A1g 1026 968 0.00      
4 A1u 311 293 0.00      
5 A2u 3046 2872 72.57      
6 A2u 1417 1336 1.38      
7 Eg 3109 2932 0.00      
7 Eg 3109 2932 0.00      
8 Eg 1510 1424 0.00      
8 Eg 1510 1424 0.00      
9 Eg 1229 1159 0.00      
9 Eg 1229 1159 0.00      
10 Eu 3131 2953 112.46      
10 Eu 3131 2953 112.46      
11 Eu 1511 1425 9.23      
11 Eu 1511 1425 9.23      
12 Eu 822 775 5.13      
12 Eu 822 775 5.13      

Unscaled Zero Point Vibrational Energy (zpe) 16463.8 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 15527.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD/CEP-31G*
ABC
2.59895 0.64728 0.64728

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/CEP-31G*

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.776
C2 0.000 0.000 -0.776
H3 0.000 1.036 1.174
H4 -0.897 -0.518 1.174
H5 0.897 -0.518 1.174
H6 0.000 -1.036 -1.174
H7 -0.897 0.518 -1.174
H8 0.897 0.518 -1.174

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.55281.10941.10941.10942.20832.20832.2083
C21.55282.20832.20832.20831.10941.10941.1094
H31.10942.20831.79391.79393.13102.56622.5662
H41.10942.20831.79391.79392.56622.56623.1310
H51.10942.20831.79391.79392.56623.13102.5662
H62.20831.10943.13102.56622.56621.79391.7939
H72.20831.10942.56622.56623.13101.79391.7939
H82.20831.10942.56623.13102.56621.79391.7939

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.999 C1 C2 H7 110.999
C1 C2 H8 110.999 C2 C1 H3 110.999
C2 C1 H4 110.999 C2 C1 H5 110.999
H3 C1 H4 107.901 H3 C1 H5 107.901
H4 C1 H5 107.901 H6 C2 H7 107.901
H6 C2 H8 107.901 H7 C2 H8 107.901
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability