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

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.170455
HF Energy-0.170455
Nuclear repulsion energy139.777035
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 PM3
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 3049 2970 5.31 97.96 0.09 0.17
2 A 3018 2939 0.60 128.44 0.03 0.06
3 A 2972 2895 0.30 71.65 0.74 0.85
4 A 1515 1476 36.11 2.75 0.50 0.67
5 A 1394 1357 3.32 19.42 0.71 0.83
6 A 1359 1324 1.36 66.75 0.73 0.84
7 A 1174 1143 0.00 30.01 0.65 0.79
8 A 1130 1101 0.91 31.32 0.74 0.85
9 A 1055 1028 4.60 19.85 0.75 0.86
10 A 1017 991 2.39 14.17 0.58 0.73
11 A 914 891 0.06 8.43 0.46 0.63
12 A 543 529 1.21 1.74 0.74 0.85
13 A 283 276 3.00 0.38 0.41 0.58
14 A 67 65 3.65 0.02 0.71 0.83
15 B 3018 2940 1.74 40.18 0.75 0.86
16 B 2981 2903 5.50 45.45 0.75 0.86
17 B 2970 2892 0.04 126.40 0.75 0.86
18 B 1512 1473 77.62 0.93 0.75 0.86
19 B 1375 1339 6.31 3.73 0.75 0.86
20 B 1311 1277 1.20 0.76 0.75 0.86
21 B 1159 1129 7.66 9.89 0.75 0.86
22 B 1115 1086 5.41 11.15 0.75 0.86
23 B 1067 1039 5.28 1.36 0.75 0.86
24 B 972 947 1.84 2.31 0.75 0.86
25 B 838 816 0.39 0.76 0.75 0.86
26 B 468 456 5.77 0.31 0.75 0.86
27 B 149 145 4.86 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19212.0 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 18712.5 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 PM3
ABC
0.32543 0.09271 0.08758

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.961
C2 0.000 1.268 0.108
C3 0.000 -1.268 0.108
F4 1.161 1.418 -0.583
F5 -1.161 -1.418 -0.583
H6 0.886 -0.020 1.623
H7 -0.886 0.020 1.623
H8 -0.814 1.257 -0.636
H9 -0.110 2.169 0.734
H10 0.814 -1.257 -0.636
H11 0.110 -2.169 0.734

Atom - Atom Distances (Å)
  C1 C2 C3 F4 F5 H6 H7 H8 H9 H10 H11
C11.52791.52792.39642.39641.10661.10662.18902.18312.18902.1831
C21.52792.53561.35963.00662.17742.15351.10301.10242.75493.4946
C31.52792.53563.00661.35962.15352.17742.75493.49461.10301.1024
F42.39641.35963.00663.66572.64843.31871.98281.97852.69763.9626
F52.39643.00661.35963.66573.31872.64842.69763.96261.98281.9785
H61.10662.17742.15352.64843.31871.77253.10282.56422.57652.4510
H71.10662.15352.17743.31872.64841.77252.57652.45103.10282.5642
H82.18901.10302.75491.98282.69763.10282.57651.78992.99493.8031
H92.18311.10243.49461.97853.96262.56422.45101.78993.80314.3426
H102.18902.75491.10302.69761.98282.57653.10282.99493.80311.7899
H112.18313.49461.10243.96261.97852.45102.56423.80314.34261.7899

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 112.047 C1 C2 H8 111.596
C1 C2 H9 111.162 C1 C3 F5 112.047
C1 C3 H10 111.596 C1 C3 H11 111.162
C2 C1 C3 112.148 C2 C1 H6 110.459
C2 C1 H7 108.598 C3 C1 H6 108.598
C3 C1 H7 110.459 F4 C2 H8 106.787
F4 C2 H9 106.487 F5 C3 H10 106.787
F5 C3 H11 106.487 H6 C1 H7 106.426
H8 C2 H9 108.505 H10 C3 H11 108.505
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability