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: PBEPBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-157.052518
Energy at 298.15K-157.060278
Nuclear repulsion energy119.395918
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 PBEPBE/aug-cc-pVTZ
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 3062 3042 9.02      
2 A1 3047 3027 17.44      
3 A1 2951 2932 38.39      
4 A1 1666 1655 22.42      
5 A1 1446 1437 15.54      
6 A1 1389 1380 1.53      
7 A1 1355 1346 1.07      
8 A1 1044 1037 3.29      
9 A1 805 800 0.24      
10 A1 366 363 0.32      
11 A2 2994 2974 0.00      
12 A2 1414 1405 0.00      
13 A2 982 976 0.00      
14 A2 678 673 0.00      
15 A2 165 164 0.00      
16 B1 2995 2976 33.34      
17 B1 1434 1424 16.96      
18 B1 1062 1055 0.04      
19 B1 876 870 44.27      
20 B1 426 423 8.67      
21 B1 205 204 0.55      
22 B2 3142 3122 17.65      
23 B2 3045 3026 22.67      
24 B2 2946 2927 19.54      
25 B2 1427 1417 3.94      
26 B2 1351 1343 12.43      
27 B2 1258 1250 2.62      
28 B2 955 949 0.51      
29 B2 927 921 0.00      
30 B2 421 419 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 22916.3 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 22767.3 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 PBEPBE/aug-cc-pVTZ
ABC
0.30371 0.27959 0.15392

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.122
C2 0.000 0.000 1.462
H3 0.000 0.931 2.032
H4 0.000 -0.931 2.032
C5 0.000 1.274 -0.679
C6 0.000 -1.274 -0.679
H7 0.000 2.162 -0.034
H8 0.882 1.323 -1.338
H9 -0.882 1.323 -1.338
H10 0.000 -2.162 -0.034
H11 -0.882 -1.323 -1.338
H12 0.882 -1.323 -1.338

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.33982.12462.12461.50441.50442.16752.15822.15822.16752.15822.1582
C21.33981.09131.09132.49062.49062.62883.21913.21912.62883.21913.2191
H32.12461.09131.86102.73213.49362.40503.50493.50493.71894.14824.1482
H42.12461.09131.86103.49362.73213.71894.14824.14822.40503.50493.5049
C51.50442.49062.73213.49362.54741.09741.10211.10213.49552.82032.8203
C61.50442.49063.49362.73212.54743.49552.82032.82031.09741.10211.1021
H72.16752.62882.40503.71891.09743.49551.78351.78354.32373.82363.8236
H82.15823.21913.50494.14821.10212.82031.78351.76433.82363.18002.6457
H92.15823.21913.50494.14821.10212.82031.78351.76433.82362.64573.1800
H102.16752.62883.71892.40503.49551.09744.32373.82363.82361.78351.7835
H112.15823.21914.14823.50492.82031.10213.82363.18002.64571.78351.7643
H122.15823.21914.14823.50492.82031.10213.82362.64573.18001.78351.7643

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 121.500 C1 C2 H4 121.500
C1 C5 H7 111.883 C1 C5 H8 110.844
C1 C5 H9 110.844 C1 C6 H10 111.883
C1 C6 H11 110.844 C1 C6 H12 110.844
C2 C1 C5 122.147 C2 C1 C6 122.147
H3 C2 H4 116.999 C5 C1 C6 115.705
H7 C5 H8 108.364 H7 C5 H9 108.364
H8 C5 H9 106.337 H10 C6 H11 108.364
H10 C6 H12 108.364 H11 C6 H12 106.337
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.599      
2 C -0.922      
3 H 0.272      
4 H 0.272      
5 C -0.720      
6 C -0.720      
7 H 0.208      
8 H 0.201      
9 H 0.201      
10 H 0.208      
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 -0.595 0.595
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.454 0.000 0.000
y 0.000 -26.074 0.000
z 0.000 0.000 -26.690
Traceless
 xyz
x -2.072 0.000 0.000
y 0.000 1.497 0.000
z 0.000 0.000 0.575
Polar
3z2-r21.150
x2-y2-2.380
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.430 0.000 0.000
y 0.000 8.359 0.000
z 0.000 0.000 9.908


<r2> (average value of r2) Å2
<r2> 91.416
(<r2>)1/2 9.561