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

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-155.935360
Energy at 298.15K 
HF Energy-155.935360
Nuclear repulsion energy108.504468
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 mPW1PW91/6-311G*
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' 3288 3138 0.38 113.51 0.32 0.48
2 A' 3138 2995 21.42 90.28 0.72 0.84
3 A' 3050 2911 23.05 221.61 0.01 0.02
4 A' 3042 2904 98.13 118.16 0.23 0.37
5 A' 1890 1804 13.26 59.01 0.20 0.34
6 A' 1539 1469 6.21 13.56 0.36 0.53
7 A' 1501 1433 11.37 17.38 0.64 0.78
8 A' 1419 1354 0.48 10.67 0.66 0.80
9 A' 1217 1161 1.91 6.35 0.46 0.63
10 A' 1101 1050 11.13 3.47 0.24 0.38
11 A' 1073 1024 31.18 0.16 0.61 0.75
12 A' 993 948 9.18 8.38 0.44 0.61
13 A' 947 903 16.66 5.59 0.54 0.70
14 A' 696 664 1.03 14.43 0.61 0.76
15 A' 324 310 2.09 1.38 0.74 0.85
16 A" 3109 2967 1.18 87.93 0.75 0.86
17 A" 3104 2963 84.29 110.83 0.75 0.86
18 A" 1496 1428 10.34 11.98 0.75 0.86
19 A" 1135 1083 0.72 1.85 0.75 0.86
20 A" 1062 1014 0.68 3.85 0.75 0.86
21 A" 998 952 2.83 6.46 0.75 0.86
22 A" 732 698 34.01 1.07 0.75 0.86
23 A" 301 288 14.09 0.96 0.75 0.86
24 A" 162 154 0.45 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18657.9 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 17807.1 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 mPW1PW91/6-311G*
ABC
0.69436 0.21325 0.17403

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.038 -1.325 0.000
C3 1.151 -0.406 0.000
C4 -0.842 1.384 0.000
H5 -0.310 -1.859 0.913
H6 -0.310 -1.859 -0.913
H7 2.227 -0.353 0.000
H8 -0.243 2.296 0.000
H9 -1.495 1.396 -0.877
H10 -1.495 1.396 0.877

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50441.29111.47012.25472.25472.28982.13102.11832.1183
C21.50441.50262.82581.09251.09252.46493.62683.20923.2092
C31.29111.50262.67892.25432.25431.07753.04043.31973.3197
C41.47012.82582.67893.41083.41083.52661.09131.09381.0938
H52.25471.09252.25433.41081.82613.08934.25483.89953.4644
H62.25471.09252.25433.41081.82613.08934.25483.46443.8995
H72.28982.46491.07753.52663.08933.08933.62184.20534.2053
H82.13103.62683.04041.09134.25484.25483.62181.77411.7741
H92.11833.20923.31971.09383.89953.46444.20531.77411.7548
H102.11833.20923.31971.09383.46443.89954.20531.77411.7548

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 50.857 H1 C2 C6 119.675
C2 C3 C6 24.874 C2 C3 C10 72.623
C2 C6 C3 35.348 C2 C6 H4 49.479
C2 C6 H5 33.302 C3 C2 C6 119.778
C3 C6 H4 51.662 C3 C6 H5 66.107
C3 C10 H7 9.422 C3 C10 H8 65.291
C3 C10 H9 74.674 H4 C6 H5 74.473
C6 C3 C10 86.568 H7 C10 H8 58.866
H7 C10 H9 77.957 H8 C10 H9 60.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.123      
2 C -0.435      
3 C -0.248      
4 C -0.771      
5 H 0.202      
6 H 0.202      
7 H 0.199      
8 H 0.238      
9 H 0.244      
10 H 0.244      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.139 0.886 0.000 0.897
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.337 -0.588 0.000
y -0.588 -25.083 0.000
z 0.000 0.000 -25.580
Traceless
 xyz
x 1.994 -0.588 0.000
y -0.588 -0.624 0.000
z 0.000 0.000 -1.370
Polar
3z2-r2-2.740
x2-y21.746
xy-0.588
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.857 -0.543 0.000
y -0.543 7.255 0.000
z 0.000 0.000 4.560


<r2> (average value of r2) Å2
<r2> 79.924
(<r2>)1/2 8.940