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: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/SDD
 hartrees
Energy at 0K-156.067369
Energy at 298.15K-156.075501
Nuclear repulsion energy119.630778
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 HF/SDD
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 3326 2994 13.44      
2 A1 3296 2968 38.36      
3 A1 3189 2871 67.28      
4 A1 1854 1670 33.29      
5 A1 1652 1487 20.56      
6 A1 1594 1435 1.52      
7 A1 1569 1413 0.76      
8 A1 1194 1075 2.55      
9 A1 860 774 0.03      
10 A1 408 368 0.33      
11 A2 3247 2923 0.00      
12 A2 1627 1465 0.00      
13 A2 1129 1017 0.00      
14 A2 773 696 0.00      
15 A2 163 146 0.00      
16 B1 3253 2929 94.30      
17 B1 1641 1478 26.64      
18 B1 1238 1115 2.27      
19 B1 1089 981 87.13      
20 B1 487 438 13.24      
21 B1 213 191 0.74      
22 B2 3421 3080 35.07      
23 B2 3292 2964 44.33      
24 B2 3183 2866 35.99      
25 B2 1636 1473 6.83      
26 B2 1568 1412 18.27      
27 B2 1427 1285 5.38      
28 B2 1083 976 0.04      
29 B2 1059 953 0.65      
30 B2 473 426 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 25470.5 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 22933.7 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 HF/SDD
ABC
0.30377 0.27880 0.15354

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

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 1.463
H3 0.000 0.914 2.029
H4 0.000 -0.914 2.029
C5 0.000 1.279 -0.683
C6 0.000 -1.279 -0.683
H7 0.000 2.156 -0.048
H8 0.874 1.325 -1.326
H9 -0.874 1.325 -1.326
H10 0.000 -2.156 -0.048
H11 -0.874 -1.325 -1.326
H12 0.874 -1.325 -1.326

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.33562.10972.10971.51381.51382.16312.15202.15202.16312.15202.1520
C21.33561.07471.07472.49772.49772.63283.20893.20892.63283.20893.2089
H32.10971.07471.82722.73593.48702.42033.49113.49113.70634.12664.1266
H42.10971.07471.82723.48702.73593.70634.12664.12662.42033.49113.4911
C51.51382.49772.73593.48702.55791.08241.08651.08653.49302.82092.8209
C61.51382.49773.48702.73592.55793.49302.82092.82091.08241.08651.0865
H72.16312.63282.42033.70631.08243.49301.75731.75734.31203.80953.8095
H82.15203.20893.49114.12661.08652.82091.75731.74873.80953.17442.6493
H92.15203.20893.49114.12661.08652.82091.75731.74873.80952.64933.1744
H102.16312.63283.70632.42033.49301.08244.31203.80953.80951.75731.7573
H112.15203.20894.12663.49112.82091.08653.80953.17442.64931.75731.7487
H122.15203.20894.12663.49112.82091.08653.80952.64933.17441.75731.7487

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 121.777 C1 C2 H4 121.777
C1 C5 H7 111.784 C1 C5 H8 110.628
C1 C5 H9 110.628 C1 C6 H10 111.784
C1 C6 H11 110.628 C1 C6 H12 110.628
C2 C1 C5 122.340 C2 C1 C6 122.340
H3 C2 H4 116.447 C5 C1 C6 115.319
H7 C5 H8 108.237 H7 C5 H9 108.237
H8 C5 H9 107.167 H10 C6 H11 108.237
H10 C6 H12 108.237 H11 C6 H12 107.167
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.452      
2 C -0.638      
3 H 0.190      
4 H 0.190      
5 C -0.655      
6 C -0.655      
7 H 0.196      
8 H 0.181      
9 H 0.181      
10 H 0.196      
11 H 0.181      
12 H 0.181      


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 -0.671 0.671
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.818 0.000 0.000
y 0.000 -25.819 0.000
z 0.000 0.000 -26.397
Traceless
 xyz
x -2.710 0.000 0.000
y 0.000 1.788 0.000
z 0.000 0.000 0.922
Polar
3z2-r21.844
x2-y2-2.998
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.210 0.000 0.000
y 0.000 5.707 0.000
z 0.000 0.000 8.339


<r2> (average value of r2) Å2
<r2> 91.340
(<r2>)1/2 9.557