return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2FCH2CH2F (1,3-difluoropropane)

using model chemistry: QCISD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD/TZVP
 hartrees
Energy at 0K-316.982409
Energy at 298.15K 
HF Energy-316.087946
Nuclear repulsion energy187.815205
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/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3159 3018 29.11      
2 A 3103 2964 4.42      
3 A 3076 2939 8.05      
4 A 1548 1479 0.56      
5 A 1487 1421 15.16      
6 A 1478 1411 4.16      
7 A 1338 1278 0.51      
8 A 1273 1216 1.04      
9 A 1149 1098 21.70      
10 A 1026 980 45.96      
11 A 887 847 0.32      
12 A 550 526 4.33      
13 A 249 238 3.98      
14 A 84 80 4.44      
15 B 3159 3018 27.70      
16 B 3127 2987 25.21      
17 B 3099 2960 55.84      
18 B 1550 1481 2.57      
19 B 1456 1391 16.01      
20 B 1426 1362 4.52      
21 B 1294 1236 5.78      
22 B 1149 1097 12.88      
23 B 1111 1061 99.58      
24 B 981 937 30.33      
25 B 795 759 4.09      
26 B 423 404 8.69      
27 B 193 185 10.77      

Unscaled Zero Point Vibrational Energy (zpe) 20084.4 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 19186.6 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/TZVP
ABC
0.30479 0.09835 0.09193

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.978
C2 0.000 1.264 0.141
C3 0.000 -1.264 0.141
F4 1.165 1.316 -0.626
F5 -1.165 -1.316 -0.626
H6 0.885 -0.008 1.622
H7 -0.885 0.008 1.622
H8 -0.847 1.285 -0.546
H9 -0.017 2.153 0.773
H10 0.847 -1.285 -0.546
H11 0.017 -2.153 0.773

Atom - Atom Distances (Å)
  C1 C2 C3 F4 F5 H6 H7 H8 H9 H10 H11
C11.51581.51582.37952.37951.09381.09382.16612.16322.16612.1632
C21.51582.52701.39592.93242.14262.13341.09061.09122.77213.4748
C31.51582.52702.93241.39592.13342.14262.77213.47481.09061.0912
F42.37951.39592.93243.51532.62323.31112.01392.01362.62163.9125
F52.37952.93241.39593.51533.31112.62322.62163.91252.01392.0136
H61.09382.14262.13342.62323.31111.76933.06062.49102.51622.4651
H71.09382.13342.14263.31112.62321.76932.51622.46513.06062.4910
H82.16611.09062.77212.01392.62163.06062.51621.78323.07803.7826
H92.16321.09123.47482.01363.91252.49102.46511.78323.78264.3068
H102.16612.77211.09062.62162.01392.51623.06063.07803.78261.7832
H112.16323.47481.09123.91252.01362.46512.49103.78264.30681.7832

picture of 1,3-difluoropropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 109.552 C1 C2 H8 111.376
C1 C2 H9 111.107 C1 C3 F5 109.552
C1 C3 H10 111.376 C1 C3 H11 111.107
C2 C1 C3 112.937 C2 C1 H6 109.317
C2 C1 H7 108.599 C3 C1 H6 108.599
C3 C1 H7 109.317 F4 C2 H8 107.545
F4 C2 H9 107.486 F5 C3 H10 107.545
F5 C3 H11 107.486 H6 C1 H7 107.954
H8 C2 H9 109.633 H10 C3 H11 109.633
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability