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 CH2C(CH3)CH3 (1-Propene, 2-methyl-)

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-156.762666
Energy at 298.15K-156.770543
HF Energy-156.127374
Nuclear repulsion energy119.755213
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 MP3=FULL/6-31+G**
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 3239 3018 9.41      
2 A1 3220 3000 23.69      
3 A1 3116 2903 34.56      
4 A1 1776 1655 12.47      
5 A1 1559 1452 11.67      
6 A1 1500 1397 0.52      
7 A1 1467 1367 0.14      
8 A1 1118 1041 1.92      
9 A1 841 783 0.12      
10 A1 383 357 0.11      
11 A2 3180 2962 0.00      
12 A2 1523 1418 0.00      
13 A2 1046 974 0.00      
14 A2 714 665 0.00      
15 A2 163 151 0.00      
16 B1 3181 2964 43.30      
17 B1 1538 1433 16.37      
18 B1 1133 1055 1.85      
19 B1 899 837 54.76      
20 B1 416 387 7.01      
21 B1 202 188 0.75      
22 B2 3327 3100 19.75      
23 B2 3219 2998 24.97      
24 B2 3113 2900 23.63      
25 B2 1543 1438 4.56      
26 B2 1471 1371 9.21      
27 B2 1346 1254 2.01      
28 B2 1015 946 0.18      
29 B2 997 929 0.02      
30 B2 440 410 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 24341.5 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 22676.6 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 MP3=FULL/6-31+G**
ABC
0.30510 0.28010 0.15432

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.112
C2 0.000 0.000 1.453
H3 0.000 0.919 2.020
H4 0.000 -0.919 2.020
C5 0.000 1.288 -0.676
C6 0.000 -1.288 -0.676
H7 0.000 2.149 -0.015
H8 0.876 1.345 -1.322
H9 -0.876 1.345 -1.322
H10 0.000 -2.149 -0.015
H11 -0.876 -1.345 -1.322
H12 0.876 -1.345 -1.322

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.34062.11782.11781.51021.51022.15312.15242.15242.15312.15242.1524
C21.34061.08011.08012.48842.48842.60283.20533.20532.60283.20533.2053
H32.11781.08011.83812.72163.48462.37823.48093.48093.68204.13054.1305
H42.11781.08011.83813.48462.72163.68204.13054.13052.37823.48093.4809
C51.51022.48842.72163.48462.57611.08581.08971.08973.50042.84912.8491
C61.51022.48843.48462.72162.57613.50042.84912.84911.08581.08971.0897
H72.15312.60282.37823.68201.08583.50041.76681.76684.29873.83223.8322
H82.15243.20533.48094.13051.08972.84911.76681.75243.83223.21052.6901
H92.15243.20533.48094.13051.08972.84911.76681.75243.83222.69013.2105
H102.15312.60283.68202.37823.50041.08584.29873.83223.83221.76681.7668
H112.15243.20534.13053.48092.84911.08973.83223.21052.69011.76681.7524
H122.15243.20534.13053.48092.84911.08973.83222.69013.21051.76681.7524

picture of 1-Propene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H3 121.689 C1 C2 H4 121.689
C1 C5 H7 111.016 C1 C5 H8 110.719
C1 C5 H9 110.719 C1 C6 H10 111.016
C1 C6 H11 110.719 C1 C6 H12 110.719
C2 C1 C5 121.473 C2 C1 C6 121.473
H3 C2 H4 116.622 C5 C1 C6 117.054
H7 C5 H8 108.611 H7 C5 H9 108.611
H8 C5 H9 107.042 H10 C6 H11 108.611
H10 C6 H12 108.611 H11 C6 H12 107.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability