return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CCl3 (Ethane, 1,1,1-trichloro-)

using model chemistry: CCSD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-1456.642582
Energy at 298.15K-1456.646407
HF Energy-1455.908922
Nuclear repulsion energy 
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(T)/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3083 2966        
2 A1 1461 1405        
3 A1 1122 1079        
4 A1 538 517        
5 A1 358 344        
6 A2 320 308        
7 E 3177 3057        
7 E 3177 3056        
8 E 1522 1464        
8 E 1521 1463        
9 E 1140 1097        
9 E 1140 1097        
10 E 755 727        
10 E 755 727        
11 E 354 341        
11 E 354 341        
12 E 251 241        
12 E 250 241        

Unscaled Zero Point Vibrational Energy (zpe) 10638.8 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 10235.6 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(T)/6-31G*
ABC
0.07830 0.07830 0.05611

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.765
C2 0.000 0.000 0.244
H3 0.000 -1.033 2.128
H4 0.895 0.517 2.128
H5 -0.895 0.517 2.128
Cl6 0.000 1.683 -0.361
Cl7 -1.458 -0.842 -0.361
Cl8 1.458 -0.842 -0.361

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 Cl6 Cl7 Cl8
C11.52111.09511.09511.09512.71192.71192.7119
C21.52112.14912.14912.14911.78881.78881.7888
H31.09512.14911.78931.78933.68472.89142.8914
H41.09512.14911.78931.78932.89143.68472.8914
H51.09512.14911.78931.78932.89142.89143.6847
Cl62.71191.78883.68472.89142.89142.91552.9155
Cl72.71191.78882.89143.68472.89142.91552.9155
Cl82.71191.78882.89142.89143.68472.91552.9155

picture of Ethane, 1,1,1-trichloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 109.776 C1 C2 Cl7 109.776
C1 C2 Cl8 109.776 C2 C1 H3 109.382
C2 C1 H4 109.382 C2 C1 H5 109.382
H3 C1 H4 109.561 H3 C1 H5 109.561
H4 C1 H5 109.561 Cl6 C2 Cl7 109.165
Cl6 C2 Cl8 109.165 Cl7 C2 Cl8 109.165
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability