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All results from a given calculation for CHFClCHFCl (1,2-dichloro-1,2-difluoroethane RR)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-1195.865891
Energy at 298.15K-1195.869335
HF Energy-1194.805501
Nuclear repulsion energy373.891192
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)/aug-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 A 3130 3060        
2 A 1383 1353        
3 A 1274 1246        
4 A 1134 1109        
5 A 1049 1026        
6 A 828 810        
7 A 454 444        
8 A 308 301        
9 A 164 161        
10 A 77 76        
11 B 3140 3070        
12 B 1318 1288        
13 B 1216 1189        
14 B 1051 1028        
15 B 819 801        
16 B 428 419        
17 B 384 375        
18 B 330 322        

Unscaled Zero Point Vibrational Energy (zpe) 9243.0 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 9037.8 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)/aug-cc-pVDZ
ABC
0.09633 0.05943 0.03826

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.227 0.733 0.396
C2 0.227 -0.733 0.396
H3 -1.323 0.825 0.349
H4 1.323 -0.825 0.349
F5 0.227 1.313 1.568
F6 -0.227 -1.313 1.568
Cl7 0.486 1.607 -0.990
Cl8 -0.486 -1.607 -0.990

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.53441.10082.19821.38372.35711.78772.7324
C21.53442.19821.10082.35711.38372.73241.7877
H31.10082.19823.11842.03102.69342.38322.9003
H42.19821.10083.11842.69342.03102.90032.3832
F51.38372.35712.03102.69342.66442.58783.9469
F62.35711.38372.69342.03102.66443.94692.5878
Cl71.78772.73242.38322.90032.58783.94693.3584
Cl82.73241.78772.90032.38323.94692.58783.3584

picture of 1,2-dichloro-1,2-difluoroethane RR state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 112.005 C1 C2 F6 107.643
C1 C2 Cl8 110.436 C2 C1 H3 112.005
C2 C1 F5 107.643 C2 C1 Cl7 110.436
H3 C1 F5 109.135 H3 C1 Cl7 108.857
H4 C2 F6 109.135 H4 C2 Cl8 108.857
F5 C1 Cl7 108.699 F6 C2 Cl8 108.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability