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All results from a given calculation for C6H4F2 (orthodifluorobenzene)

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-429.585211
Energy at 298.15K-429.589676
Nuclear repulsion energy345.933612
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/6-31+G**
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 3283 3104 2.20      
2 A1 3268 3090 8.92      
3 A1 1697 1604 25.10      
4 A1 1580 1494 165.26      
5 A1 1319 1247 102.48      
6 A1 1312 1240 19.95      
7 A1 1192 1127 0.41      
8 A1 1063 1005 6.95      
9 A1 780 738 35.75      
10 A1 582 550 4.61      
11 A1 285 269 0.33      
12 A2 909 860 0.00      
13 A2 824 779 0.00      
14 A2 535 505 0.00      
15 A2 398 376 0.00      
16 A2 180 170 0.00      
17 B1 905 855 4.26      
18 B1 762 720 98.25      
19 B1 441 417 2.40      
20 B1 287 272 0.00      
21 B2 3278 3099 3.45      
22 B2 3255 3078 1.40      
23 B2 1693 1601 9.63      
24 B2 1522 1439 11.05      
25 B2 1311 1239 3.18      
26 B2 1234 1166 37.33      
27 B2 1137 1075 25.60      
28 B2 860 813 15.94      
29 B2 549 519 4.21      
30 B2 440 416 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 18439.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 17432.5 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/6-31+G**
ABC
0.10787 0.07358 0.04374

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.695 -0.534
C2 0.000 -0.695 -0.534
C3 0.000 -1.402 0.663
C4 0.000 -0.700 1.871
C5 0.000 0.700 1.871
C6 0.000 1.402 0.663
F7 0.000 1.356 -1.714
F8 0.000 -1.356 -1.714
H9 0.000 -2.482 0.630
H10 0.000 -1.245 2.804
H11 0.000 1.245 2.804
H12 0.000 2.482 0.630

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C11.39042.41432.77992.40461.38971.35292.36683.38393.86113.38312.1326
C21.39041.38972.40462.77992.41432.36681.35292.13263.38313.86113.3839
C32.41431.38971.39702.42372.80323.64102.37761.08112.14713.40463.8839
C42.77992.40461.39701.39942.42374.13273.64462.17181.08122.15733.4152
C52.40462.77992.42371.39941.39703.64464.13273.41522.15731.08122.1718
C61.38972.41432.80322.42371.39702.37763.64103.88393.40462.14711.0811
F71.35292.36683.64104.13273.64462.37762.71254.49775.21394.51992.6007
F82.36681.35292.37763.64464.13273.64102.71252.60074.51995.21394.4977
H93.38392.13261.08112.17183.41523.88394.49772.60072.50154.31524.9644
H103.86113.38312.14711.08122.15733.40465.21394.51992.50152.49044.3152
H113.38313.86113.40462.15731.08122.14714.51995.21394.31522.49042.5015
H122.13263.38393.88393.41522.17181.08112.60074.49774.96444.31522.5015

picture of orthodifluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.552 C1 C2 F8 119.251
C1 C6 C5 119.287 C1 C6 H12 118.811
C2 C1 C6 120.552 C2 C1 F7 119.251
C2 C3 C4 119.287 C2 C3 H9 118.811
C3 C2 F8 120.197 C3 C4 C5 120.161
C3 C4 H10 119.539 C4 C3 H9 121.902
C4 C5 C6 120.161 C4 C5 H11 120.300
C5 C4 H10 120.300 C5 C6 H12 121.902
C6 C1 F7 120.197 C6 C5 H11 119.539
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability