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

using model chemistry: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-155.944584
Energy at 298.15K 
HF Energy-155.944584
Nuclear repulsion energy108.003269
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 B3LYP/6-31G*
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' 3284 3154 0.67 113.90 0.30 0.46
2 A' 3119 2996 20.50 87.91 0.72 0.84
3 A' 3038 2917 19.98 247.97 0.01 0.01
4 A' 3035 2914 90.21 53.82 0.53 0.69
5 A' 1878 1804 10.93 49.56 0.21 0.34
6 A' 1556 1495 9.87 17.37 0.39 0.56
7 A' 1512 1452 8.17 24.48 0.69 0.82
8 A' 1434 1377 0.47 19.31 0.58 0.74
9 A' 1207 1159 1.19 4.27 0.38 0.55
10 A' 1102 1059 11.05 1.37 0.29 0.45
11 A' 1081 1038 30.40 0.08 0.65 0.79
12 A' 987 948 3.01 9.98 0.51 0.67
13 A' 954 916 12.92 10.11 0.62 0.76
14 A' 684 656 0.21 16.65 0.59 0.74
15 A' 321 308 1.54 1.50 0.73 0.85
16 A" 3090 2967 1.50 87.91 0.75 0.86
17 A" 3088 2966 84.04 99.30 0.75 0.86
18 A" 1507 1447 6.96 18.74 0.75 0.86
19 A" 1138 1093 0.59 2.58 0.75 0.86
20 A" 1064 1022 1.34 4.09 0.75 0.86
21 A" 998 958 2.41 13.30 0.75 0.86
22 A" 732 703 25.91 1.21 0.75 0.86
23 A" 300 288 9.29 1.26 0.75 0.86
24 A" 160 153 0.44 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18633.6 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 17893.8 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 B3LYP/6-31G*
ABC
0.68947 0.21090 0.17220

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.031 -1.332 0.000
C3 1.158 -0.405 0.000
C4 -0.853 1.388 0.000
H5 -0.306 -1.873 0.913
H6 -0.306 -1.873 -0.913
H7 2.236 -0.344 0.000
H8 -0.255 2.306 0.000
H9 -1.508 1.399 -0.881
H10 -1.508 1.399 0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51171.29701.47922.26712.26712.29692.14142.13012.1301
C21.51171.50732.84161.09631.09632.47293.64453.22763.2276
C31.29701.50732.69412.26542.26541.08023.05673.33723.3372
C41.47922.84162.69413.43023.43023.54171.09531.09771.0977
H52.26711.09632.26543.43021.82533.10434.27753.92033.4861
H62.26711.09632.26543.43021.82533.10434.27753.48613.9203
H72.29692.47291.08023.54173.10433.10433.63694.22304.2230
H82.14143.64453.05671.09534.27754.27753.63691.77961.7796
H92.13013.22763.33721.09773.92033.48614.22301.77961.7618
H102.13013.22763.33721.09773.48613.92034.22301.77961.7618

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 50.887 H1 C2 C6 119.906
C2 C3 C6 24.743 C2 C3 C10 72.703
C2 C6 C3 35.133 C2 C6 H4 49.407
C2 C6 H5 33.640 C3 C2 C6 120.125
C3 C6 H4 51.662 C3 C6 H5 66.243
C3 C10 H7 9.447 C3 C10 H8 65.315
C3 C10 H9 74.694 H4 C6 H5 74.570
C6 C3 C10 86.585 H7 C10 H8 58.858
H7 C10 H9 77.960 H8 C10 H9 60.330
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.179      
2 C -0.344      
3 C -0.183      
4 C -0.538      
5 H 0.124      
6 H 0.124      
7 H 0.135      
8 H 0.166      
9 H 0.169      
10 H 0.169      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.139 0.897 0.000 0.908
CHELPG 0.861 0.293 0.001 0.909
AIM        
ESP 0.888 0.288 0.002 0.933


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.253 -0.543 0.000
y -0.543 -24.938 0.000
z 0.000 0.000 -25.219
Traceless
 xyz
x 1.825 -0.543 0.000
y -0.543 -0.702 0.000
z 0.000 0.000 -1.123
Polar
3z2-r2-2.246
x2-y21.685
xy-0.543
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.501 -0.508 0.000
y -0.508 6.835 0.000
z 0.000 0.000 4.185


<r2> (average value of r2) Å2
<r2> 80.465
(<r2>)1/2 8.970