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

using model chemistry: QCISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-1195.622029
Energy at 298.15K-1195.625568
HF Energy-1194.718334
Nuclear repulsion energy375.604789
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/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3171 3019 0.00      
2 Ag 1448 1379 0.00      
3 Ag 1379 1314 0.00      
4 Ag 1168 1112 0.00      
5 Ag 1125 1072 0.00      
6 Ag 874 832 0.00      
7 Ag 528 503 0.00      
8 Ag 384 366 0.00      
9 Ag 278 265 0.00      
10 Au 3181 3029 14.47      
11 Au 1366 1301 39.19      
12 Au 1288 1226 32.01      
13 Au 1158 1103 228.28      
14 Au 817 778 188.30      
15 Au 409 389 4.39      
16 Au 378 360 31.89      
17 Au 178 169 1.47      
18 Au 81 77 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 9604.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9146.5 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/6-31G*
ABC
0.13388 0.04922 0.03719

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

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.762
C2 0.000 0.000 0.762
H3 1.018 0.000 -1.157
H4 -1.018 0.000 1.157
F5 -0.664 -1.119 -1.190
F6 0.664 1.119 1.190
Cl7 -0.840 1.441 -1.361
Cl8 0.840 -1.441 1.361

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52331.09222.17181.36992.34581.77182.6990
C21.52332.17181.09222.34581.36992.69901.7718
H31.09222.17183.08202.02072.62412.35982.9060
H42.17181.09223.08202.62412.02072.90602.3598
F51.36992.34582.02072.62413.52692.57122.9786
F62.34581.36992.62412.02073.52692.97862.5712
Cl71.77182.69902.35982.90602.57122.97864.3044
Cl82.69901.77182.90602.35982.97862.57124.3044

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 111.208 C1 C2 F6 108.234
C1 C2 Cl8 109.762 C2 C1 H3 111.208
C2 C1 F5 108.234 C2 C1 Cl7 109.762
H3 C1 F5 109.799 H3 C1 Cl7 108.633
H4 C2 F6 109.799 H4 C2 Cl8 108.633
F5 C1 Cl7 109.182 F6 C2 Cl8 109.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability