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All results from a given calculation for C2H4F2 (1,2-difluoroethane)

using model chemistry: CCSD(T)=FULL/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H anti 1Ag
Energy calculated at CCSD(T)=FULL/daug-cc-pVDZ
 hartrees
Energy at 0K-277.728019
Energy at 298.15K 
HF Energy-276.963909
Nuclear repulsion energy124.338027
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 CCSD(T)=FULL/daug-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 3069 3069        
2 Ag 1498 1498        
3 Ag 1429 1429        
4 Ag 1103 1103        
5 Ag 1035 1035        
6 Ag 450 450        
7 Au 3147 3147        
8 Au 1217 1217        
9 Au 802 802        
10 Au 116 116        
11 Bg 3124 3124        
12 Bg 1280 1280        
13 Bg 1160 1160        
14 Bu 3072 3072        
15 Bu 1504 1504        
16 Bu 1336 1336        
17 Bu 1046 1046        
18 Bu 275 275        

Unscaled Zero Point Vibrational Energy (zpe) 13331.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13331.0 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 CCSD(T)=FULL/daug-cc-pVDZ
ABC
1.04235 0.12681 0.11828

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/daug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.432 0.628 0.000
C2 -0.432 -0.628 0.000
F3 -0.432 1.740 0.000
F4 0.432 -1.740 0.000
H5 1.061 0.680 0.903
H6 1.061 0.680 -0.903
H7 -1.061 -0.680 0.903
H8 -1.061 -0.680 -0.903

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6 H7 H8
C11.52431.40892.36821.10181.10182.18052.1805
C21.52432.36821.40892.18052.18051.10181.1018
F31.40892.36823.58652.04222.04222.65852.6585
F42.36821.40893.58652.65852.65852.04222.0422
H51.10182.18052.04222.65851.80672.51983.1006
H61.10182.18052.04222.65851.80673.10062.5198
H72.18051.10182.65852.04222.51983.10061.8067
H82.18051.10182.65852.04223.10062.51981.8067

picture of 1,2-difluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 107.612 C1 C2 H7 111.243
C1 C2 H8 111.243 C2 C1 F3 107.612
C2 C1 H5 111.243 C2 C1 H6 111.243
F3 C1 H5 108.234 F3 C1 H6 108.234
F4 C2 H7 108.234 F4 C2 H8 108.234
H5 C1 H6 110.146 H7 C2 H8 110.146
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability