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All results from a given calculation for CH2C(CH3)CH3 (1-Propene, 2-methyl-)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-155.610536
Energy at 298.15K-155.618474
HF Energy-155.245341
Nuclear repulsion energy118.747903
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 MP2/3-21G
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 3165 3021 9.78      
2 A1 3154 3010 18.76      
3 A1 3071 2931 17.87      
4 A1 1716 1638 2.83      
5 A1 1601 1528 9.76      
6 A1 1523 1454 0.18      
7 A1 1496 1427 0.99      
8 A1 1134 1082 4.40      
9 A1 790 755 0.00      
10 A1 383 366 0.23      
11 A2 3128 2986 0.00      
12 A2 1577 1505 0.00      
13 A2 1086 1037 0.00      
14 A2 726 693 0.00      
15 A2 180 171 0.00      
16 B1 3131 2989 40.61      
17 B1 1592 1520 16.76      
18 B1 1170 1117 0.99      
19 B1 932 889 50.12      
20 B1 429 409 7.63      
21 B1 198 189 0.63      
22 B2 3248 3100 18.06      
23 B2 3152 3008 17.04      
24 B2 3068 2928 16.96      
25 B2 1594 1521 4.07      
26 B2 1482 1415 9.64      
27 B2 1318 1258 5.99      
28 B2 1032 985 0.38      
29 B2 980 935 0.20      
30 B2 449 428 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 24251.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 23147.8 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 MP2/3-21G
ABC
0.29943 0.27525 0.15159

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.127
C2 0.000 0.000 1.471
H3 0.000 0.924 2.043
H4 0.000 -0.924 2.043
C5 0.000 1.287 -0.689
C6 0.000 -1.287 -0.689
H7 0.000 2.165 -0.034
H8 0.887 1.330 -1.334
H9 -0.887 1.330 -1.334
H10 0.000 -2.165 -0.034
H11 -0.887 -1.330 -1.334
H12 0.887 -1.330 -1.334

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.34372.12702.12701.52451.52452.17122.16632.16632.17122.16632.1663
C21.34371.08701.08702.51482.51482.63703.22893.22892.63703.22893.2289
H32.12701.08701.84892.75633.51522.41963.51523.51523.72304.15654.1565
H42.12701.08701.84893.51522.75633.72304.15654.15652.41963.51523.5152
C51.52452.51482.75633.51522.57451.09541.09741.09743.51402.83802.8380
C61.52452.51483.51522.75632.57453.51402.83802.83801.09541.09741.0974
H72.17122.63702.41963.72301.09543.51401.78131.78134.33033.83343.8334
H82.16633.22893.51524.15651.09742.83801.78131.77363.83343.19772.6608
H92.16633.22893.51524.15651.09742.83801.78131.77363.83342.66083.1977
H102.17122.63703.72302.41963.51401.09544.33033.83343.83341.78131.7813
H112.16633.22894.15653.51522.83801.09743.83343.19772.66081.78131.7736
H122.16633.22894.15653.51522.83801.09743.83342.66083.19771.78131.7736

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 121.745 C1 C2 H4 121.745
C1 C5 H7 110.877 C1 C5 H8 110.370
C1 C5 H9 110.370 C1 C6 H10 110.877
C1 C6 H11 110.370 C1 C6 H12 110.370
C2 C1 C5 122.394 C2 C1 C6 122.394
H3 C2 H4 116.511 C5 C1 C6 115.212
H7 C5 H8 108.659 H7 C5 H9 108.659
H8 C5 H9 107.823 H10 C6 H11 108.659
H10 C6 H12 108.659 H11 C6 H12 107.823
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.004     0.345
2 C -0.362     -0.586
3 H 0.171     0.199
4 H 0.171     0.199
5 C -0.564     -0.485
6 C -0.564     -0.485
7 H 0.190     0.132
8 H 0.191     0.137
9 H 0.191     0.137
10 H 0.190     0.132
11 H 0.191     0.137
12 H 0.191     0.137


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 -0.380 0.380
CHELPG        
AIM        
ESP 0.006 0.000 -0.370 0.370


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.683 0.000 0.000
y 0.000 -26.272 0.000
z 0.000 0.000 -26.349
Traceless
 xyz
x -2.372 0.000 0.000
y 0.000 1.244 0.000
z 0.000 0.000 1.128
Polar
3z2-r22.257
x2-y2-2.411
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.765 0.000 0.000
y 0.000 5.844 0.000
z 0.000 0.000 7.318


<r2> (average value of r2) Å2
<r2> 92.279
(<r2>)1/2 9.606