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All results from a given calculation for CHFClCHClF (ethane, 1,2-dichloro-1,2-difluoro-)

using model chemistry: QCISD(T)/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CI 1AG
Energy calculated at QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-1195.757620
Energy at 298.15K-1195.761080
HF Energy-1194.777365
Nuclear repulsion energy373.589921
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(T)/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3132 2985        
2 Ag 1408 1342        
3 Ag 1311 1249        
4 Ag 1147 1093        
5 Ag 1092 1040        
6 Ag 835 796        
7 Ag 516 492        
8 Ag 375 357        
9 Ag 271 259        
10 Au 3142 2994        
11 Au 1322 1260        
12 Au 1228 1170        
13 Au 1139 1085        
14 Au 782 746        
15 Au 401 382        
16 Au 365 348        
17 Au 172 164        
18 Au 73 70        

Unscaled Zero Point Vibrational Energy (zpe) 9354.1 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 8915.4 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(T)/cc-pVDZ
ABC
0.13276 0.04859 0.03675

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.767
C2 0.000 0.000 0.767
H3 1.030 0.000 -1.160
H4 -1.030 0.000 1.160
F5 -0.671 -1.102 -1.211
F6 0.671 1.102 1.211
Cl7 -0.822 1.476 -1.358
Cl8 0.822 -1.476 1.358

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.53341.10282.18521.36442.36121.78932.7139
C21.53342.18521.10282.36121.36442.71391.7893
H31.10282.18523.10352.02762.63932.37602.9260
H42.18521.10283.10352.63932.02762.92602.3760
F51.36442.36122.02762.63933.53872.58572.9943
F62.36121.36442.63932.02763.53872.99432.5857
Cl71.78932.71392.37602.92602.58572.99434.3338
Cl82.71391.78932.92602.37602.99432.58574.3338

picture of ethane, 1,2-dichloro-1,2-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 110.918 C1 C2 F6 109.000
C1 C2 Cl8 109.283 C2 C1 H3 110.918
C2 C1 F5 109.000 C2 C1 Cl7 109.283
H3 C1 F5 110.081 H3 C1 Cl7 108.122
H4 C2 F6 110.081 H4 C2 Cl8 108.122
F5 C1 Cl7 109.414 F6 C2 Cl8 109.414
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability