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: PBEPBE/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 PBEPBE/6-311G*
 hartrees
Energy at 0K-157.024282
Energy at 298.15K-157.032031
Nuclear repulsion energy119.139754
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 PBEPBE/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 3061 3029 15.36      
2 A1 3050 3018 21.85      
3 A1 2953 2923 43.71      
4 A1 1680 1662 16.46      
5 A1 1470 1454 16.03      
6 A1 1403 1389 0.87      
7 A1 1375 1361 1.25      
8 A1 1053 1042 3.99      
9 A1 808 800 0.17      
10 A1 369 365 0.28      
11 A2 2996 2965 0.00      
12 A2 1437 1422 0.00      
13 A2 994 984 0.00      
14 A2 679 671 0.00      
15 A2 162 161 0.00      
16 B1 2998 2967 54.65      
17 B1 1458 1443 22.24      
18 B1 1071 1060 0.28      
19 B1 859 851 48.56      
20 B1 424 419 8.99      
21 B1 205 203 0.63      
22 B2 3142 3109 25.69      
23 B2 3048 3016 28.62      
24 B2 2948 2917 23.40      
25 B2 1452 1437 5.40      
26 B2 1372 1358 13.62      
27 B2 1267 1254 3.35      
28 B2 961 951 0.19      
29 B2 937 927 0.02      
30 B2 426 422 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 23029.2 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 22789.7 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 PBEPBE/6-311G*
ABC
0.30252 0.27828 0.15323

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.122
C2 0.000 0.000 1.464
H3 0.000 0.931 2.039
H4 0.000 -0.931 2.039
C5 0.000 1.276 -0.680
C6 0.000 -1.276 -0.680
H7 0.000 2.168 -0.037
H8 0.883 1.331 -1.341
H9 -0.883 1.331 -1.341
H10 0.000 -2.168 -0.037
H11 -0.883 -1.331 -1.341
H12 0.883 -1.331 -1.341

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.34182.13062.13061.50711.50712.17402.16582.16582.17402.16582.1658
C21.34181.09411.09412.49472.49472.63703.22753.22752.63703.22753.2275
H32.13061.09411.86232.74013.50152.41623.51553.51553.73014.16114.1611
H42.13061.09411.86233.50152.74013.73014.16114.16112.41623.51553.5155
C51.50712.49472.74013.50152.55191.09961.10441.10443.50362.83042.8304
C61.50712.49473.50152.74012.55193.50362.83042.83041.09961.10441.1044
H72.17402.63702.41623.73011.09963.50361.78351.78354.33633.83683.8368
H82.16583.22753.51554.16111.10442.83041.78351.76643.83683.19412.6612
H92.16583.22753.51554.16111.10442.83041.78351.76643.83682.66123.1941
H102.17402.63703.73012.41623.50361.09964.33633.83683.83681.78351.7835
H112.16583.22754.16113.51552.83041.10443.83683.19412.66121.78351.7664
H122.16583.22754.16113.51552.83041.10443.83682.66123.19411.78351.7664

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 121.676 C1 C2 H4 121.676
C1 C5 H7 112.079 C1 C5 H8 111.121
C1 C5 H9 111.121 C1 C6 H10 112.079
C1 C6 H11 111.121 C1 C6 H12 111.121
C2 C1 C5 122.150 C2 C1 C6 122.150
H3 C2 H4 116.648 C5 C1 C6 115.699
H7 C5 H8 108.037 H7 C5 H9 108.037
H8 C5 H9 106.197 H10 C6 H11 108.037
H10 C6 H12 108.037 H11 C6 H12 106.197
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.113      
2 C -0.451      
3 H 0.193      
4 H 0.193      
5 C -0.688      
6 C -0.688      
7 H 0.221      
8 H 0.221      
9 H 0.221      
10 H 0.221      
11 H 0.221      
12 H 0.221      


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 -0.528 0.528
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.427 0.000 0.000
y 0.000 -25.852 0.000
z 0.000 0.000 -26.331
Traceless
 xyz
x -2.335 0.000 0.000
y 0.000 1.527 0.000
z 0.000 0.000 0.808
Polar
3z2-r21.617
x2-y2-2.575
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.913 0.000 0.000
y 0.000 7.190 0.000
z 0.000 0.000 8.986


<r2> (average value of r2) Å2
<r2> 91.655
(<r2>)1/2 9.574