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All results from a given calculation for CH3CF3 (Ethane, 1,1,1-trifluoro-)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-374.341341
Energy at 298.15K-374.345961
HF Energy-373.786946
Nuclear repulsion energy197.713177
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/3-21G
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 3084 2989 0.24      
2 A1 1507 1460 35.59      
3 A1 1306 1265 201.12      
4 A1 811 786 1.07      
5 A1 570 552 30.03      
6 A2 259 251 0.00      
7 E 3161 3063 3.90      
7 E 3161 3063 3.90      
8 E 1568 1519 0.19      
8 E 1568 1519 0.19      
9 E 1352 1310 192.64      
9 E 1352 1310 192.64      
10 E 1046 1014 31.34      
10 E 1046 1014 31.34      
11 E 520 504 4.97      
11 E 520 504 4.97      
12 E 346 335 0.32      
12 E 346 335 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 11759.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 11397.7 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/3-21G
ABC
0.17331 0.16771 0.16771

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.481
C2 0.000 0.000 -0.027
H3 0.000 -1.033 1.842
H4 0.894 0.516 1.842
H5 -0.894 0.516 1.842
F6 0.000 1.285 -0.528
F7 -1.112 -0.642 -0.528
F8 1.112 -0.642 -0.528

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 F6 F7 F8
C11.50791.09401.09401.09402.38462.38462.3846
C21.50792.13542.13542.13541.37881.37881.3788
H31.09402.13541.78861.78863.31472.64732.6473
H41.09402.13541.78861.78862.64733.31472.6473
H51.09402.13541.78861.78862.64732.64733.3147
F62.38461.37883.31472.64732.64732.22492.2249
F72.38461.37882.64733.31472.64732.22492.2249
F82.38461.37882.64732.64733.31472.22492.2249

picture of Ethane, 1,1,1-trifluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 111.312 C1 C2 F7 111.312
C1 C2 F8 111.312 C2 C1 H3 109.282
C2 C1 H4 109.282 C2 C1 H5 109.282
H3 C1 H4 109.660 H3 C1 H5 109.660
H4 C1 H5 109.660 F6 C2 F7 107.569
F6 C2 F8 107.569 F7 C2 F8 107.569
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability