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All results from a given calculation for C4H6 (1-Methylcyclopropene)

using model chemistry: B3PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-155.939088
Energy at 298.15K 
HF Energy-155.939088
Nuclear repulsion energy108.610470
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 B3PW91/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3270 3131 0.38 118.15 0.30 0.46
2 A' 3111 2979 15.43 82.19 0.70 0.82
3 A' 3026 2896 40.92 313.12 0.02 0.04
4 A' 3024 2895 63.73 72.02 0.30 0.46
5 A' 1869 1789 15.45 73.43 0.13 0.22
6 A' 1518 1454 4.27 8.72 0.38 0.55
7 A' 1474 1411 11.38 10.65 0.52 0.69
8 A' 1396 1337 0.38 8.20 0.48 0.65
9 A' 1197 1146 2.48 9.70 0.36 0.53
10 A' 1087 1041 6.23 5.84 0.12 0.22
11 A' 1069 1023 32.16 1.87 0.45 0.62
12 A' 983 941 7.06 7.68 0.18 0.31
13 A' 943 903 14.26 4.22 0.46 0.63
14 A' 687 658 0.95 13.94 0.56 0.72
15 A' 324 310 2.01 1.78 0.75 0.86
16 A" 3087 2955 35.27 106.49 0.75 0.86
17 A" 3081 2949 23.25 87.62 0.75 0.86
18 A" 1470 1407 9.22 5.40 0.75 0.86
19 A" 1120 1072 1.17 0.52 0.75 0.86
20 A" 1049 1004 0.29 2.07 0.75 0.86
21 A" 985 943 2.61 0.86 0.75 0.86
22 A" 735 704 34.11 1.56 0.75 0.86
23 A" 301 289 13.42 0.20 0.75 0.86
24 A" 162 155 0.44 0.22 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18484.1 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 17694.8 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 B3PW91/6-311+G(3df,2p)
ABC
0.69493 0.21377 0.17441

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.178 0.000
C2 -0.035 -1.324 0.000
C3 1.151 -0.402 0.000
C4 -0.845 1.380 0.000
H5 -0.305 -1.857 0.913
H6 -0.305 -1.857 -0.913
H7 2.226 -0.346 0.000
H8 -0.247 2.292 0.000
H9 -1.497 1.389 -0.878
H10 -1.497 1.389 0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50281.28901.46932.25142.25142.28662.12862.11582.1158
C21.50281.50242.82311.09101.09102.46333.62283.20433.2043
C31.28901.50242.67602.25212.25211.07613.03563.31503.3150
C41.46932.82312.67603.40663.40663.52271.09061.09331.0933
H52.25141.09102.25213.40661.82563.08604.24913.89363.4578
H62.25141.09102.25213.40661.82563.08604.24913.45783.8936
H72.28662.46331.07613.52273.08603.08603.61614.19984.1998
H82.12863.62283.03561.09064.24914.24913.61611.77451.7745
H92.11583.20433.31501.09333.89363.45784.19981.77451.7550
H102.11583.20433.31501.09333.45783.89364.19981.77451.7550

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.800 H1 C2 C6 119.610
C2 C3 C6 24.885 C2 C3 C10 72.598
C2 C6 C3 35.412 C2 C6 H4 49.525
C2 C6 H5 33.213 C3 C2 C6 119.703
C3 C6 H4 51.671 C3 C6 H5 66.089
C3 C10 H7 9.416 C3 C10 H8 65.263
C3 C10 H9 74.651 H4 C6 H5 74.457
C6 C3 C10 86.542 H7 C10 H8 58.847
H7 C10 H9 77.940 H8 C10 H9 60.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.148      
2 C -0.541      
3 C -0.004      
4 C -0.417      
5 H 0.128      
6 H 0.128      
7 H 0.166      
8 H 0.124      
9 H 0.134      
10 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.186 0.904 0.000 0.923
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.478 -0.662 0.000
y -0.662 -25.145 0.000
z 0.000 0.000 -25.669
Traceless
 xyz
x 1.929 -0.662 0.000
y -0.662 -0.572 0.000
z 0.000 0.000 -1.357
Polar
3z2-r2-2.715
x2-y21.667
xy-0.662
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.559 -0.652 0.000
y -0.652 7.968 0.000
z 0.000 0.000 5.535


<r2> (average value of r2) Å2
<r2> 79.839
(<r2>)1/2 8.935