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All results from a given calculation for C6H4F2 (1,4-difluorobenzene)

using model chemistry: CCD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at CCD/cc-pVDZ
 hartrees
Energy at 0K-429.596888
Energy at 298.15K-429.601739
Nuclear repulsion energy339.512198
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 CCD/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 3259 3118 0.00      
2 Ag 1716 1641 0.00      
3 Ag 1328 1271 0.00      
4 Ag 1162 1111 0.00      
5 Ag 879 841 0.00      
6 Ag 455 435 0.00      
7 Au 970 928 0.00      
8 Au 431 412 0.00      
9 B1g 836 800 0.00      
10 B1u 3243 3102 4.74      
11 B1u 1587 1518 257.43      
12 B1u 1269 1214 142.30      
13 B1u 1033 989 3.40      
14 B1u 757 724 51.61      
15 B2g 936 896 0.00      
16 B2g 686 656 0.00      
17 B2g 388 371 0.00      
18 B2u 3258 3117 0.98      
19 B2u 1466 1402 0.84      
20 B2u 1312 1255 2.82      
21 B2u 1102 1055 13.88      
22 B2u 349 334 4.85      
23 B3g 3245 3104 0.00      
24 B3g 1694 1621 0.00      
25 B3g 1301 1244 0.00      
26 B3g 647 619 0.00      
27 B3g 444 425 0.00      
28 B3u 866 828 80.42      
29 B3u 529 507 11.23      
30 B3u 163 156 1.70      

Unscaled Zero Point Vibrational Energy (zpe) 18653.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 17846.1 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 CCD/cc-pVDZ
ABC
0.18698 0.04693 0.03752

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.383
C2 0.000 0.000 -1.383
C3 0.000 1.220 0.702
C4 0.000 -1.220 0.702
C5 0.000 -1.220 -0.702
C6 0.000 1.220 -0.702
F7 0.000 0.000 2.730
F8 0.000 0.000 -2.730
H9 0.000 2.155 1.269
H10 0.000 -2.155 1.269
H11 0.000 -2.155 -1.269
H12 0.000 2.155 -1.269

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.76521.39711.39712.41502.41501.34744.11262.15802.15803.41673.4167
C22.76522.41502.41501.39711.39714.11261.34743.41673.41672.15802.1580
C31.39712.41502.43982.81461.40332.36693.64201.09363.42233.90802.1810
C41.39712.41502.43981.40332.81462.36693.64203.42231.09362.18103.9080
C52.41501.39712.81461.40332.43983.64202.36693.90802.18101.09363.4223
C62.41501.39711.40332.81462.43983.64202.36692.18103.90803.42231.0936
F71.34744.11262.36692.36693.64203.64205.46002.60372.60374.54254.5425
F84.11261.34743.64203.64202.36692.36695.46004.54254.54252.60372.6037
H92.15803.41671.09363.42233.90802.18102.60374.54254.31005.00152.5375
H102.15803.41673.42231.09362.18103.90802.60374.54254.31002.53755.0015
H113.41672.15803.90802.18101.09363.42234.54252.60375.00152.53754.3100
H123.41672.15802.18103.90803.42231.09364.54252.60372.53755.00154.3100

picture of 1,4-difluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 119.170 C1 C3 H9 119.594
C1 C4 C5 119.170 C1 C4 H10 119.594
C2 C5 C4 119.170 C2 C5 H11 119.594
C2 C6 C3 119.170 C2 C6 H12 119.594
C3 C1 C4 121.661 C3 C1 F7 119.170
C3 C6 H12 121.236 C4 C1 F7 119.170
C4 C5 H11 121.236 C5 C2 C6 121.661
C5 C2 F8 119.170 C5 C4 H10 121.236
C6 C2 F8 119.170 C6 C3 H9 121.236
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability