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: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-156.991736
Energy at 298.15K-156.999502
HF Energy-156.991736
Nuclear repulsion energy118.909284
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 PBEPBEultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3088 3037 9.04      
2 A1 3070 3019 19.80      
3 A1 2967 2918 38.66      
4 A1 1694 1666 13.29      
5 A1 1483 1459 10.84      
6 A1 1420 1397 0.74      
7 A1 1389 1366 0.28      
8 A1 1063 1045 4.93      
9 A1 812 798 0.10      
10 A1 368 362 0.30      
11 A2 3014 2964 0.00      
12 A2 1451 1427 0.00      
13 A2 1000 984 0.00      
14 A2 685 674 0.00      
15 A2 176 173 0.00      
16 B1 3016 2966 46.14      
17 B1 1469 1445 17.11      
18 B1 1081 1063 1.44      
19 B1 873 859 43.85      
20 B1 423 416 5.92      
21 B1 210 207 0.74      
22 B2 3168 3115 20.78      
23 B2 3068 3017 23.00      
24 B2 2961 2912 20.08      
25 B2 1466 1441 4.36      
26 B2 1387 1364 8.18      
27 B2 1277 1256 4.36      
28 B2 968 952 0.11      
29 B2 944 929 0.14      
30 B2 423 416 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 23206.3 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 22823.4 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 PBEPBEultrafine/6-31G*
ABC
0.30152 0.27709 0.15266

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.121
C2 0.000 0.000 1.467
H3 0.000 0.932 2.042
H4 0.000 -0.932 2.042
C5 0.000 1.279 -0.681
C6 0.000 -1.279 -0.681
H7 0.000 2.171 -0.034
H8 0.885 1.334 -1.343
H9 -0.885 1.334 -1.343
H10 0.000 -2.171 -0.034
H11 -0.885 -1.334 -1.343
H12 0.885 -1.334 -1.343

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.34592.13522.13521.50931.50932.17642.16922.16922.17642.16922.1692
C21.34591.09551.09552.49932.49932.63893.23373.23372.63893.23373.2337
H32.13521.09551.86492.74433.50732.41673.52143.52143.73334.16844.1684
H42.13521.09551.86493.50732.74433.73334.16844.16842.41673.52143.5214
C51.50932.49932.74433.50732.55781.10211.10691.10693.51002.83712.8371
C61.50932.49933.50732.74432.55783.51002.83712.83711.10211.10691.1069
H72.17642.63892.41673.73331.10213.51001.78851.78854.34193.84483.8448
H82.16923.23373.52144.16841.10692.83711.78851.77053.84483.20192.6678
H92.16923.23373.52144.16841.10692.83711.78851.77053.84482.66783.2019
H102.17642.63893.73332.41673.51001.10214.34193.84483.84481.78851.7885
H112.16923.23374.16843.52142.83711.10693.84483.20192.66781.78851.7705
H122.16923.23374.16843.52142.83711.10693.84482.66783.20191.78851.7705

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 121.659 C1 C2 H4 121.659
C1 C5 H7 111.967 C1 C5 H8 111.088
C1 C5 H9 111.088 C1 C6 H10 111.967
C1 C6 H11 111.088 C1 C6 H12 111.088
C2 C1 C5 122.075 C2 C1 C6 122.075
H3 C2 H4 116.683 C5 C1 C6 115.850
H7 C5 H8 108.124 H7 C5 H9 108.124
H8 C5 H9 106.214 H10 C6 H11 108.124
H10 C6 H12 108.124 H11 C6 H12 106.214
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.234      
2 C -0.407      
3 H 0.138      
4 H 0.138      
5 C -0.549      
6 C -0.549      
7 H 0.166      
8 H 0.166      
9 H 0.166      
10 H 0.166      
11 H 0.166      
12 H 0.166      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.540 0.540
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.670 0.000 0.000
y 0.000 -25.299 -0.004
z 0.000 -0.004 -25.753
Traceless
 xyz
x -2.144 0.000 0.000
y 0.000 1.412 -0.004
z 0.000 -0.004 0.731
Polar
3z2-r21.463
x2-y2-2.371
xy0.000
xz0.000
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.324 0.000 0.000
y 0.000 6.678 -0.002
z 0.000 -0.002 8.400


<r2> (average value of r2) Å2
<r2> 91.540
(<r2>)1/2 9.568