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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at QCISD/CEP-121G*
 hartrees
Energy at 0K-14.779591
Energy at 298.15K-14.785507
HF Energy-14.473395
Nuclear repulsion energy26.383439
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 QCISD/CEP-121G*
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 3026 2886 0.00      
2 A1g 1462 1394 0.00      
3 A1g 1015 968 0.00      
4 A1u 319 304 0.00      
5 A2u 3021 2881 67.47      
6 A2u 1431 1365 1.20      
7 Eg 3090 2947 0.00      
7 Eg 3090 2947 0.00      
8 Eg 1523 1452 0.00      
8 Eg 1523 1452 0.00      
9 Eg 1237 1179 0.00      
9 Eg 1237 1179 0.00      
10 Eu 3113 2969 88.93      
10 Eu 3113 2969 88.93      
11 Eu 1530 1460 9.59      
11 Eu 1530 1460 9.59      
12 Eu 818 780 2.33      
12 Eu 818 780 2.33      

Unscaled Zero Point Vibrational Energy (zpe) 16447.7 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 15686.2 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 QCISD/CEP-121G*
ABC
2.65155 0.65619 0.65619

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/CEP-121G*

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.771
C2 0.000 0.000 -0.771
H3 0.000 1.025 1.166
H4 -0.888 -0.513 1.166
H5 0.888 -0.513 1.166
H6 0.000 -1.025 -1.166
H7 -0.888 0.513 -1.166
H8 0.888 0.513 -1.166

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.54301.09881.09881.09882.19242.19242.1924
C21.54302.19242.19242.19241.09881.09881.0988
H31.09882.19241.77601.77603.10602.54822.5482
H41.09882.19241.77601.77602.54822.54823.1060
H51.09882.19241.77601.77602.54823.10602.5482
H62.19241.09883.10602.54822.54821.77601.7760
H72.19241.09882.54822.54823.10601.77601.7760
H82.19241.09882.54823.10602.54821.77601.7760

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.063 C1 C2 H7 111.063
C1 C2 H8 111.063 C2 C1 H3 111.063
C2 C1 H4 111.063 C2 C1 H5 111.063
H3 C1 H4 107.833 H3 C1 H5 107.833
H4 C1 H5 107.833 H6 C2 H7 107.833
H6 C2 H8 107.833 H7 C2 H8 107.833
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability