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All results from a given calculation for C4F6 (perfluorobutadiene)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-749.987034
Energy at 298.15K 
HF Energy-748.038731
Nuclear repulsion energy564.741648
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(2df,p)
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 1907 1807 0.00      
2 Ag 1477 1400 0.00      
3 Ag 1390 1317 0.00      
4 Ag 1228 1163 0.00      
5 Ag 731 692 0.00      
6 Ag 599 567 0.00      
7 Ag 384 363 0.00      
8 Ag 356 337 0.00      
9 Ag 223 211 0.00      
10 Au 570 540 3.80      
11 Au 352 334 4.29      
12 Au 112 106 0.09      
13 Au 13i 12i 0.08      
14 Bg 630 597 0.00      
15 Bg 489 464 0.00      
16 Bg 186 176 0.00      
17 Bu 1841 1745 314.40      
18 Bu 1412 1338 359.44      
19 Bu 1265 1199 278.69      
20 Bu 987 935 236.60      
21 Bu 635 601 6.50      
22 Bu 506 480 3.46      
23 Bu 287 272 5.83      
24 Bu 139 132 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 8846.3 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 8380.9 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(2df,p)
ABC
0.08279 0.02813 0.02099

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.158 1.849 0.000
C2 0.472 0.555 0.000
C3 -0.472 -0.555 0.000
C4 -0.158 -1.849 0.000
F5 1.058 2.797 0.000
F6 -1.058 2.324 0.000
F7 1.764 0.220 0.000
F8 -1.764 -0.220 0.000
F9 1.058 -2.324 0.000
F10 -1.058 -2.797 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 F5 F6 F7 F8 F9 F10
C11.33162.48533.71151.30721.30542.28752.82434.26864.8024
C21.33161.45782.48532.31712.33891.33442.36722.93763.6849
C32.48531.45781.33163.68492.93762.36721.33442.33892.3171
C43.71152.48531.33164.80244.26862.82432.28751.30541.3072
F51.30722.31713.68494.80242.16862.67164.13155.12055.9808
F61.30542.33892.93764.26862.16863.51982.64015.10645.1205
F72.28751.33442.36722.82432.67163.51983.55582.64014.1315
F82.82432.36721.33442.28754.13152.64013.55583.51982.6716
F94.26862.93762.33891.30545.12055.10642.64013.51982.1686
F104.80243.68492.31711.30725.98085.12054.13152.67162.1686

picture of perfluorobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 125.938 C1 C2 F7 118.188
C2 C1 F5 122.819 C2 C1 F6 124.979
C2 C3 C4 125.938 C2 C3 F8 115.874
C3 C2 F7 115.874 C3 C4 F9 124.979
C3 C4 F10 122.819 C4 C3 F8 118.188
F5 C1 F6 112.202 F9 C4 F10 112.202
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability