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All results from a given calculation for C3H8 (Propane)

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-118.813570
Energy at 298.15K-118.821979
HF Energy-118.295277
Nuclear repulsion energy82.314595
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/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3123 2980 54.69      
2 A1 3050 2910 18.50      
3 A1 3045 2905 29.84      
4 A1 1535 1465 3.52      
5 A1 1513 1443 0.09      
6 A1 1447 1380 2.36      
7 A1 1199 1144 0.64      
8 A1 896 855 0.57      
9 A1 369 352 0.01      
10 A2 3110 2968 0.00      
11 A2 1511 1442 0.00      
12 A2 1336 1275 0.00      
13 A2 922 879 0.00      
14 A2 220 210 0.00      
15 B1 3122 2979 106.08      
16 B1 3079 2938 2.96      
17 B1 1528 1458 11.12      
18 B1 1239 1182 0.04      
19 B1 761 726 1.54      
20 B1 284 271 0.00      
21 B2 3120 2977 30.75      
22 B2 3042 2902 34.17      
23 B2 1520 1450 1.31      
24 B2 1438 1372 4.53      
25 B2 1391 1327 1.78      
26 B2 1088 1039 0.34      
27 B2 944 900 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 22914.2 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 21862.5 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 QCISD/6-311G**
ABC
0.97571 0.28049 0.24819

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.591
C2 0.000 1.274 -0.261
C3 0.000 -1.274 -0.261
H4 0.880 0.000 1.248
H5 -0.880 0.000 1.248
H6 0.000 2.174 0.363
H7 0.000 -2.174 0.363
H8 0.886 1.309 -0.907
H9 -0.886 1.309 -0.907
H10 -0.886 -1.309 -0.907
H11 0.886 -1.309 -0.907

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.53251.53251.09821.09822.18622.18622.17812.17812.17812.1781
C21.53252.54732.16202.16201.09623.50421.09731.09732.80602.8060
C31.53252.54732.16202.16203.50421.09622.80602.80601.09731.0973
H41.09822.16202.16201.76042.50692.50692.52153.07873.07872.5215
H51.09822.16202.16201.76042.50692.50693.07872.52152.52153.0787
H62.18621.09623.50422.50692.50694.34881.77461.77463.81253.8125
H72.18623.50421.09622.50692.50694.34883.81253.81251.77461.7746
H82.17811.09732.80602.52153.07871.77463.81251.77273.16192.6183
H92.17811.09732.80603.07872.52151.77463.81251.77272.61833.1619
H102.17812.80601.09733.07872.52153.81251.77463.16192.61831.7727
H112.17812.80601.09732.52153.07873.81251.77462.61833.16191.7727

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.462 C1 C2 H8 110.747
C1 C2 H9 110.747 C1 C3 H7 111.462
C1 C3 H10 110.747 C1 C3 H11 110.747
C2 C1 C3 112.421 C2 C1 H4 109.425
C2 C1 H5 109.425 C3 C1 H4 109.425
C3 C1 H5 109.425 H4 C1 H5 106.548
H6 C2 H8 107.997 H6 C2 H9 107.997
H7 C3 H10 107.997 H7 C3 H11 107.997
H8 C2 H9 107.750 H10 C3 H11 107.750
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability