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: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-157.160312
Energy at 298.15K-157.168066
Nuclear repulsion energy118.759344
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 BLYP/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 3047 3039 17.87      
2 A1 3024 3017 25.02      
3 A1 2939 2932 52.73      
4 A1 1663 1659 14.82      
5 A1 1484 1480 13.40      
6 A1 1415 1412 0.85      
7 A1 1393 1390 0.39      
8 A1 1061 1058 3.14      
9 A1 787 785 0.14      
10 A1 372 371 0.24      
11 A2 2967 2960 0.00      
12 A2 1453 1449 0.00      
13 A2 1004 1001 0.00      
14 A2 681 679 0.00      
15 A2 161 160 0.00      
16 B1 2971 2963 69.35      
17 B1 1472 1468 18.63      
18 B1 1082 1079 0.09      
19 B1 867 865 46.42      
20 B1 425 424 7.68      
21 B1 202 202 0.45      
22 B2 3121 3113 31.47      
23 B2 3022 3015 35.45      
24 B2 2932 2925 24.12      
25 B2 1468 1464 4.73      
26 B2 1384 1381 7.49      
27 B2 1257 1254 4.82      
28 B2 963 961 0.30      
29 B2 937 935 0.08      
30 B2 431 430 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 22991.4 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 22934.0 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 BLYP/6-311G*
ABC
0.30096 0.27517 0.15188

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.125
C2 0.000 0.000 1.468
H3 0.000 0.928 2.044
H4 0.000 -0.928 2.044
C5 0.000 1.285 -0.683
C6 0.000 -1.285 -0.683
H7 0.000 2.175 -0.040
H8 0.883 1.341 -1.342
H9 -0.883 1.341 -1.342
H10 0.000 -2.175 -0.040
H11 -0.883 -1.341 -1.342
H12 0.883 -1.341 -1.342

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.34302.13202.13201.51711.51712.18122.17472.17472.18122.17472.1747
C21.34301.09261.09262.50472.50472.64623.23633.23632.64623.23633.2363
H32.13201.09261.85662.74973.51152.42793.52373.52373.73784.17084.1708
H42.13201.09261.85663.51152.74973.73784.17084.17082.42793.52373.5237
C51.51712.50472.74973.51152.56911.09851.10351.10353.51892.84742.8474
C61.51712.50473.51152.74972.56913.51892.84742.84741.09851.10351.1035
H72.18122.64622.42793.73781.09853.51891.78121.78124.35013.85213.8521
H82.17473.23633.52374.17081.10352.84741.78121.76543.85213.21082.6819
H92.17473.23633.52374.17081.10352.84741.78121.76543.85212.68193.2108
H102.18122.64623.73782.42793.51891.09854.35013.85213.85211.78121.7812
H112.17473.23634.17083.52372.84741.10353.85213.21082.68191.78121.7654
H122.17473.23634.17083.52372.84741.10353.85212.68193.21081.78121.7654

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 121.831 C1 C2 H4 121.831
C1 C5 H7 112.016 C1 C5 H8 111.187
C1 C5 H9 111.187 C1 C6 H10 112.016
C1 C6 H11 111.187 C1 C6 H12 111.187
C2 C1 C5 122.147 C2 C1 C6 122.147
H3 C2 H4 116.337 C5 C1 C6 115.707
H7 C5 H8 107.978 H7 C5 H9 107.978
H8 C5 H9 106.244 H10 C6 H11 107.978
H10 C6 H12 107.978 H11 C6 H12 106.244
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.141      
2 C -0.435      
3 H 0.178      
4 H 0.178      
5 C -0.635      
6 C -0.635      
7 H 0.202      
8 H 0.201      
9 H 0.201      
10 H 0.202      
11 H 0.201      
12 H 0.201      


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 -0.496 0.496
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.579 0.000 0.000
y 0.000 -26.244 0.000
z 0.000 0.000 -26.691
Traceless
 xyz
x -2.112 0.000 0.000
y 0.000 1.392 0.000
z 0.000 0.000 0.720
Polar
3z2-r21.441
x2-y2-2.336
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 92.440
(<r2>)1/2 9.615