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/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G
 hartrees
Energy at 0K-157.090927
Energy at 298.15K-157.098748
Nuclear repulsion energy118.252827
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/6-31G
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 3080 3056 12.23      
2 A1 3049 3026 24.99      
3 A1 2949 2926 51.54      
4 A1 1678 1665 12.02      
5 A1 1509 1498 9.92      
6 A1 1448 1437 0.84      
7 A1 1426 1415 0.64      
8 A1 1084 1076 4.58      
9 A1 791 785 0.05      
10 A1 376 373 0.27      
11 A2 2988 2965 0.00      
12 A2 1482 1471 0.00      
13 A2 1025 1017 0.00      
14 A2 694 689 0.00      
15 A2 170 169 0.00      
16 B1 2992 2970 70.01      
17 B1 1497 1485 17.10      
18 B1 1111 1102 2.66      
19 B1 910 903 48.22      
20 B1 429 426 6.24      
21 B1 202 201 0.71      
22 B2 3160 3136 32.05      
23 B2 3047 3024 32.44      
24 B2 2942 2920 24.32      
25 B2 1494 1482 4.58      
26 B2 1414 1404 5.89      
27 B2 1279 1269 7.36      
28 B2 984 976 0.41      
29 B2 955 948 0.00      
30 B2 434 431 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 23298.8 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 23121.7 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 BLYP/6-31G
ABC
0.29791 0.27297 0.15051

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.123
C2 0.000 0.000 1.476
H3 0.000 0.929 2.053
H4 0.000 -0.929 2.053
C5 0.000 1.290 -0.687
C6 0.000 -1.290 -0.687
H7 0.000 2.181 -0.038
H8 0.887 1.346 -1.347
H9 -0.887 1.346 -1.347
H10 0.000 -2.181 -0.038
H11 -0.887 -1.346 -1.347
H12 0.887 -1.346 -1.347

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.35242.14172.14171.52351.52352.18672.18202.18202.18672.18202.1820
C21.35241.09391.09392.51812.51812.65463.25083.25082.65463.25083.2508
H32.14171.09391.85852.76333.52592.43683.53863.53863.74754.18634.1863
H42.14171.09391.85853.52592.76333.74754.18634.18632.43683.53863.5386
C51.52352.51812.76333.52592.58061.10181.10711.10713.53122.85892.8589
C61.52352.51813.52592.76332.58063.53122.85892.85891.10181.10711.1071
H72.18672.65462.43683.74751.10183.53121.78811.78814.36163.86523.8652
H82.18203.25083.53864.18631.10712.85891.78811.77333.86523.22392.6924
H92.18203.25083.53864.18631.10712.85891.78811.77333.86522.69243.2239
H102.18672.65463.74752.43683.53121.10184.36163.86523.86521.78811.7881
H112.18203.25084.18633.53862.85891.10713.86523.22392.69241.78811.7733
H122.18203.25084.18633.53862.85891.10713.86522.69243.22391.78811.7733

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 121.848 C1 C2 H4 121.848
C1 C5 H7 111.804 C1 C5 H8 111.101
C1 C5 H9 111.101 C1 C6 H10 111.804
C1 C6 H11 111.101 C1 C6 H12 111.101
C2 C1 C5 122.121 C2 C1 C6 122.121
H3 C2 H4 116.304 C5 C1 C6 115.759
H7 C5 H8 108.092 H7 C5 H9 108.092
H8 C5 H9 106.430 H10 C6 H11 108.092
H10 C6 H12 108.092 H11 C6 H12 106.430
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.208      
2 C -0.303      
3 H 0.096      
4 H 0.096      
5 C -0.431      
6 C -0.431      
7 H 0.126      
8 H 0.128      
9 H 0.128      
10 H 0.126      
11 H 0.128      
12 H 0.128      


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 -0.560 0.560
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.858 0.000 0.000
y 0.000 -25.587 0.000
z 0.000 0.000 -26.109
Traceless
 xyz
x -2.011 0.000 0.000
y 0.000 1.397 0.000
z 0.000 0.000 0.613
Polar
3z2-r21.226
x2-y2-2.272
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> 92.682
(<r2>)1/2 9.627