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

using model chemistry: QCISD/6-31G

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/6-31G
 hartrees
Energy at 0K-316.416827
Energy at 298.15K 
HF Energy-315.862008
Nuclear repulsion energy184.374060
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
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 3129 3015 26.13      
2 A 3066 2954 1.85      
3 A 3025 2915 9.92      
4 A 1565 1508 0.48      
5 A 1528 1473 6.33      
6 A 1446 1394 8.04      
7 A 1324 1276 0.54      
8 A 1228 1183 0.93      
9 A 1123 1082 5.30      
10 A 966 931 33.89      
11 A 873 841 1.14      
12 A 539 519 3.96      
13 A 250 241 6.75      
14 A 87 84 5.79      
15 B 3129 3015 23.05      
16 B 3074 2962 38.23      
17 B 3060 2949 31.90      
18 B 1566 1509 2.75      
19 B 1443 1391 2.31      
20 B 1417 1366 11.99      
21 B 1228 1184 6.53      
22 B 1148 1107 10.34      
23 B 1084 1045 30.98      
24 B 949 915 40.86      
25 B 795 766 5.47      
26 B 402 387 10.06      
27 B 192 185 17.12      

Unscaled Zero Point Vibrational Energy (zpe) 19817.5 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 19096.2 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
ABC
0.28412 0.09705 0.09081

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.009
C2 0.000 1.270 0.153
C3 0.000 -1.270 0.153
F4 1.228 1.274 -0.646
F5 -1.228 -1.274 -0.646
H6 0.892 -0.003 1.659
H7 -0.892 0.003 1.659
H8 -0.841 1.283 -0.552
H9 0.009 2.185 0.762
H10 0.841 -1.283 -0.552
H11 -0.009 -2.185 0.762

Atom - Atom Distances (Å)
  C1 C2 C3 F4 F5 H6 H7 H8 H9 H10 H11
C11.53131.53132.42272.42271.10361.10362.18832.19902.18832.1990
C21.53132.53981.46522.93592.16432.16041.09781.09912.77863.5082
C31.53132.53982.93591.46522.16042.16432.77863.50821.09781.0991
F42.42271.46522.93593.53982.65663.37962.07192.07312.58773.9342
F52.42272.93591.46523.53983.37962.65662.58773.93422.07192.0731
H61.10362.16432.16042.65663.37961.78343.08972.52472.55492.5250
H71.10362.16042.16433.37962.65661.78342.55492.52503.08972.5247
H82.18831.09782.77862.07192.58773.08972.55491.80633.06803.8005
H92.19901.09913.50822.07313.93422.52472.52501.80633.80054.3701
H102.18832.77861.09782.58772.07192.55493.08973.06803.80051.8063
H112.19903.50821.09913.93422.07312.52502.52473.80054.37011.8063

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 107.882 C1 C2 H8 111.622
C1 C2 H9 112.402 C1 C3 F5 107.882
C1 C3 H10 111.622 C1 C3 H11 112.402
C2 C1 C3 112.058 C2 C1 H6 109.378
C2 C1 H7 109.070 C3 C1 H6 109.070
C3 C1 H7 109.378 F4 C2 H8 107.001
F4 C2 H9 107.024 F5 C3 H10 107.001
F5 C3 H11 107.024 H6 C1 H7 107.791
H8 C2 H9 110.613 H10 C3 H11 110.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability