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: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-157.202136
Energy at 298.15K-157.210031
Nuclear repulsion energy119.643568
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 mPW1PW91/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3163 3031 8.65      
2 A1 3153 3022 19.23      
3 A1 3042 2915 38.51      
4 A1 1740 1667 25.26      
5 A1 1481 1420 15.17      
6 A1 1430 1370 1.65      
7 A1 1391 1333 0.61      
8 A1 1075 1031 3.65      
9 A1 837 802 0.18      
10 A1 381 365 0.39      
11 A2 3100 2971 0.00      
12 A2 1446 1386 0.00      
13 A2 1004 962 0.00      
14 A2 697 668 0.00      
15 A2 166 160 0.00      
16 B1 3102 2973 37.33      
17 B1 1467 1406 17.32      
18 B1 1088 1043 0.02      
19 B1 924 885 47.31      
20 B1 445 427 9.03      
21 B1 214 205 0.59      
22 B2 3255 3120 17.28      
23 B2 3152 3021 23.07      
24 B2 3038 2911 19.93      
25 B2 1459 1399 4.05      
26 B2 1401 1342 13.87      
27 B2 1303 1249 0.89      
28 B2 987 946 0.24      
29 B2 956 916 0.04      
30 B2 438 420 1.50      

Unscaled Zero Point Vibrational Energy (zpe) 23667.2 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 22680.3 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 mPW1PW91/aug-cc-pVDZ
ABC
0.30514 0.28070 0.15461

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.120
C2 0.000 0.000 1.458
H3 0.000 0.929 2.027
H4 0.000 -0.929 2.027
C5 0.000 1.271 -0.677
C6 0.000 -1.271 -0.677
H7 0.000 2.156 -0.032
H8 0.882 1.320 -1.334
H9 -0.882 1.320 -1.334
H10 0.000 -2.156 -0.032
H11 -0.882 -1.320 -1.334
H12 0.882 -1.320 -1.334

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.33762.12132.12131.50081.50082.16192.15252.15252.16192.15252.1525
C21.33761.08981.08982.48502.48502.62113.21133.21132.62113.21133.2113
H32.12131.08981.85842.72613.48662.39723.49663.49663.70974.13904.1390
H42.12131.08981.85843.48662.72613.70974.13904.13902.39723.49663.4966
C51.50082.48502.72613.48662.54251.09551.10021.10023.48802.81452.8145
C61.50082.48503.48662.72612.54253.48802.81452.81451.09551.10021.1002
H72.16192.62112.39723.70971.09553.48801.78101.78104.31303.81533.8153
H82.15253.21133.49664.13901.10022.81451.78101.76323.81533.17432.6395
H92.15253.21133.49664.13901.10022.81451.78101.76323.81532.63953.1743
H102.16192.62113.70972.39723.48801.09554.31303.81533.81531.78101.7810
H112.15253.21134.13903.49662.81451.10023.81533.17432.63951.78101.7632
H122.15253.21134.13903.49662.81451.10023.81532.63953.17431.78101.7632

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 121.498 C1 C2 H4 121.498
C1 C5 H7 111.805 C1 C5 H8 110.759
C1 C5 H9 110.759 C1 C6 H10 111.805
C1 C6 H11 110.759 C1 C6 H12 110.759
C2 C1 C5 122.104 C2 C1 C6 122.104
H3 C2 H4 117.004 C5 C1 C6 115.793
H7 C5 H8 108.413 H7 C5 H9 108.413
H8 C5 H9 106.503 H10 C6 H11 108.413
H10 C6 H12 108.413 H11 C6 H12 106.503
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.204      
2 C 0.865      
3 H -0.520      
4 H -0.520      
5 C 0.240      
6 C 0.240      
7 H -0.228      
8 H -0.013      
9 H -0.013      
10 H -0.228      
11 H -0.013      
12 H -0.013      


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 -0.584 0.584
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.264 0.000 0.000
y 0.000 -25.705 0.000
z 0.000 0.000 -26.319
Traceless
 xyz
x -2.252 0.000 0.000
y 0.000 1.586 0.000
z 0.000 0.000 0.666
Polar
3z2-r21.332
x2-y2-2.559
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.202 0.000 0.000
y 0.000 7.881 0.000
z 0.000 0.000 9.549


<r2> (average value of r2) Å2
<r2> 90.894
(<r2>)1/2 9.534