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/STO-3G

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/STO-3G
 hartrees
Energy at 0K-155.210685
Energy at 298.15K-155.218098
Nuclear repulsion energy117.140811
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/STO-3G
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 3376 3123 1.98      
2 A1 3291 3045 6.45      
3 A1 3195 2956 3.08      
4 A1 1797 1663 3.55      
5 A1 1636 1514 7.16      
6 A1 1538 1423 0.00      
7 A1 1518 1404 1.18      
8 A1 1129 1044 8.31      
9 A1 819 757 0.01      
10 A1 367 340 0.35      
11 A2 3334 3085 0.00      
12 A2 1624 1502 0.00      
13 A2 1079 998 0.00      
14 A2 740 684 0.00      
15 A2 141 130 0.00      
16 B1 3335 3086 4.94      
17 B1 1631 1509 8.19      
18 B1 1158 1071 3.96      
19 B1 925 855 22.21      
20 B1 420 389 3.51      
21 B1 166 153 0.26      
22 B2 3438 3180 1.12      
23 B2 3374 3121 2.08      
24 B2 3193 2954 2.48      
25 B2 1635 1512 1.16      
26 B2 1516 1403 0.75      
27 B2 1347 1246 10.14      
28 B2 1024 948 0.42      
29 B2 1005 930 0.11      
30 B2 427 395 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 25086.5 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 23210.0 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/STO-3G
ABC
0.29374 0.26546 0.14732

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.131
C2 0.000 0.000 1.484
H3 0.000 0.938 2.066
H4 0.000 -0.938 2.066
C5 0.000 1.312 -0.695
C6 0.000 -1.312 -0.695
H7 0.000 2.199 -0.032
H8 0.896 1.360 -1.352
H9 -0.896 1.360 -1.352
H10 0.000 -2.199 -0.032
H11 -0.896 -1.360 -1.352
H12 0.896 -1.360 -1.352

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.35312.15042.15041.55001.55002.20522.20202.20202.20522.20202.2020
C21.35311.10371.10372.54322.54322.67113.26973.26972.67113.26973.2697
H32.15041.10371.87562.78613.56132.44803.55803.55803.77394.21434.2143
H42.15041.10371.87563.56132.78613.77394.21434.21432.44803.55803.5580
C51.55002.54322.78613.56132.62341.10771.11161.11163.57292.89322.8932
C61.55002.54323.56132.78612.62343.57292.89322.89321.10771.11161.1116
H72.20522.67112.44803.77391.10773.57291.80211.80214.39843.90003.9000
H82.20203.26973.55804.21431.11162.89321.80211.79123.90003.25662.7197
H92.20203.26973.55804.21431.11162.89321.80211.79123.90002.71973.2566
H102.20522.67113.77392.44803.57291.10774.39843.90003.90001.80211.8021
H112.20203.26974.21433.55802.89321.11163.90003.25662.71971.80211.7912
H122.20203.26974.21433.55802.89321.11163.90002.71973.25661.80211.7912

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 121.825 C1 C2 H4 121.825
C1 C5 H7 111.053 C1 C5 H8 110.570
C1 C5 H9 110.570 C1 C6 H10 111.053
C1 C6 H11 110.570 C1 C6 H12 110.570
C2 C1 C5 122.192 C2 C1 C6 122.192
H3 C2 H4 116.351 C5 C1 C6 115.616
H7 C5 H8 108.590 H7 C5 H9 108.590
H8 C5 H9 107.359 H10 C6 H11 108.590
H10 C6 H12 108.590 H11 C6 H12 107.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.009      
2 C -0.167      
3 H 0.068      
4 H 0.068      
5 C -0.218      
6 C -0.218      
7 H 0.077      
8 H 0.076      
9 H 0.076      
10 H 0.077      
11 H 0.076      
12 H 0.076      


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 -0.420 0.420
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.515 0.000 0.000
y 0.000 -23.872 0.000
z 0.000 0.000 -24.177
Traceless
 xyz
x -1.491 0.000 0.000
y 0.000 0.975 0.000
z 0.000 0.000 0.516
Polar
3z2-r21.033
x2-y2-1.644
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.008 0.000 0.000
y 0.000 3.580 0.000
z 0.000 0.000 4.901


<r2> (average value of r2) Å2
<r2> 92.955
(<r2>)1/2 9.641