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All results from a given calculation for C6H4F2 (orthodifluorobenzene)

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-426.695874
Energy at 298.15K-426.700983
Nuclear repulsion energy346.385611
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 CID/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 3325 3094 0.34      
2 A1 3304 3074 6.59      
3 A1 1710 1591 21.73      
4 A1 1636 1522 122.17      
5 A1 1387 1291 50.53      
6 A1 1307 1216 2.19      
7 A1 1235 1149 0.80      
8 A1 1093 1017 5.24      
9 A1 811 754 23.14      
10 A1 625 581 4.34      
11 A1 286 266 0.73      
12 A2 1043 971 0.00      
13 A2 951 885 0.00      
14 A2 783 729 0.00      
15 A2 606 564 0.00      
16 A2 205 191 0.00      
17 B1 1036 964 17.23      
18 B1 836 778 115.65      
19 B1 514 478 2.45      
20 B1 325 302 0.24      
21 B2 3319 3088 1.10      
22 B2 3289 3060 1.28      
23 B2 1724 1604 3.35      
24 B2 1569 1460 12.06      
25 B2 1376 1280 4.23      
26 B2 1313 1222 21.67      
27 B2 1187 1105 14.72      
28 B2 923 859 12.31      
29 B2 571 532 3.33      
30 B2 458 426 0.95      

Unscaled Zero Point Vibrational Energy (zpe) 19373.2 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 18026.8 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 CID/3-21G*
ABC
0.10843 0.07347 0.04380

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.691 -0.530
C2 0.000 -0.691 -0.530
C3 0.000 -1.385 0.664
C4 0.000 -0.695 1.870
C5 0.000 0.695 1.870
C6 0.000 1.385 0.664
F7 0.000 1.360 -1.717
F8 0.000 -1.360 -1.717
H9 0.000 -2.460 0.632
H10 0.000 -1.240 2.800
H11 0.000 1.240 2.800
H12 0.000 2.460 0.632

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C11.38262.39492.77212.40041.38091.36232.36983.35903.85003.37552.1166
C21.38261.38092.40042.77212.39492.36981.36232.11663.37553.85003.3590
C32.39491.38091.38922.40432.76933.63352.38141.07612.14123.38413.8450
C42.77212.40041.38921.39062.40434.13433.64842.15601.07792.14713.3898
C52.40042.77212.40431.39061.38923.64844.13433.38982.14711.07792.1560
C61.38092.39492.76932.40431.38922.38143.63353.84503.38412.14121.0761
F71.36232.36983.63354.13433.64842.38142.71964.48465.21224.51922.5942
F82.36981.36232.38143.64844.13433.63352.71962.59424.51925.21224.4846
H93.35902.11661.07612.15603.38983.84504.48462.59422.48824.28874.9205
H103.85003.37552.14121.07792.14713.38415.21224.51922.48822.47974.2887
H113.37553.85003.38412.14711.07792.14124.51925.21224.28872.47972.4882
H122.11663.35903.84503.38982.15601.07612.59424.48464.92054.28872.4882

picture of orthodifluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.138 C1 C2 F8 119.388
C1 C6 C5 120.113 C1 C6 H12 118.431
C2 C1 C6 120.138 C2 C1 F7 119.388
C2 C3 C4 120.113 C2 C3 H9 118.431
C3 C2 F8 120.474 C3 C4 C5 119.749
C3 C4 H10 119.906 C4 C3 H9 121.456
C4 C5 C6 119.749 C4 C5 H11 120.345
C5 C4 H10 120.345 C5 C6 H12 121.456
C6 C1 F7 120.474 C6 C5 H11 119.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability