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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-155.873109
Energy at 298.15K 
HF Energy-155.873109
Nuclear repulsion energy108.478934
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 B1B95/6-31+G**
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' 3311 3167 0.28 123.92 0.32 0.48
2 A' 3157 3020 16.36 93.65 0.71 0.83
3 A' 3060 2927 26.13 304.73 0.01 0.02
4 A' 3058 2926 83.30 51.77 0.72 0.84
5 A' 1897 1814 15.47 70.10 0.14 0.24
6 A' 1532 1466 7.07 12.24 0.46 0.63
7 A' 1484 1419 11.11 15.27 0.59 0.74
8 A' 1405 1344 0.38 11.55 0.69 0.81
9 A' 1218 1165 2.28 10.55 0.34 0.51
10 A' 1101 1053 14.55 7.48 0.16 0.28
11 A' 1080 1033 27.08 0.07 0.75 0.86
12 A' 994 951 10.61 8.51 0.28 0.44
13 A' 949 908 14.28 5.11 0.55 0.71
14 A' 701 671 1.05 14.79 0.60 0.75
15 A' 325 311 2.04 1.49 0.75 0.85
16 A" 3127 2992 0.07 86.17 0.75 0.86
17 A" 3123 2988 65.10 124.37 0.75 0.86
18 A" 1481 1416 10.02 9.29 0.75 0.86
19 A" 1126 1078 0.79 0.67 0.75 0.86
20 A" 1052 1006 0.26 2.53 0.75 0.86
21 A" 989 946 2.82 3.66 0.75 0.86
22 A" 730 699 38.68 1.49 0.75 0.86
23 A" 299 286 14.47 0.39 0.75 0.86
24 A" 162 155 0.58 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18680.3 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 17869.6 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 B1B95/6-31+G**
ABC
0.69447 0.21310 0.17395

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.038 -1.323 0.000
C3 1.154 -0.409 0.000
C4 -0.844 1.384 0.000
H5 -0.312 -1.856 0.913
H6 -0.312 -1.856 -0.913
H7 2.229 -0.360 0.000
H8 -0.243 2.295 0.000
H9 -1.496 1.393 -0.878
H10 -1.496 1.393 0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50241.29481.47112.25272.25272.29372.12962.11702.1170
C21.50241.50132.82431.09241.09242.46323.62343.20493.2049
C31.29481.50132.68442.25292.25291.07713.04343.32213.3221
C41.47112.82432.68443.40853.40853.53401.09121.09371.0937
H52.25271.09242.25293.40851.82573.08724.25113.89473.4585
H62.25271.09242.25293.40851.82573.08724.25113.45853.8947
H72.29372.46321.07713.53403.08723.08723.62814.20964.2096
H82.12963.62343.04341.09124.25114.25113.62811.77591.7759
H92.11703.20493.32211.09373.89473.45854.20961.77591.7569
H102.11703.20493.32211.09373.45853.89474.20961.77591.7569

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 51.071 H1 C2 C6 119.659
C2 C3 C6 24.893 C2 C3 C10 72.381
C2 C6 C3 35.343 C2 C6 H4 49.517
C2 C6 H5 33.318 C3 C2 C6 119.764
C3 C6 H4 51.847 C3 C6 H5 66.097
C3 C10 H7 9.362 C3 C10 H8 65.312
C3 C10 H9 74.667 H4 C6 H5 74.465
C6 C3 C10 86.387 H7 C10 H8 58.950
H7 C10 H9 77.955 H8 C10 H9 60.353
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.147      
2 C -0.341      
3 C -0.055      
4 C -0.704      
5 H 0.137      
6 H 0.137      
7 H 0.148      
8 H 0.175      
9 H 0.178      
10 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.199 0.894 0.000 0.916
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.574 -0.654 0.000
y -0.654 -25.240 0.000
z 0.000 0.000 -25.730
Traceless
 xyz
x 1.911 -0.654 0.000
y -0.654 -0.589 0.000
z 0.000 0.000 -1.323
Polar
3z2-r2-2.645
x2-y21.667
xy-0.654
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.245 -0.593 0.000
y -0.593 7.542 0.000
z 0.000 0.000 5.058


<r2> (average value of r2) Å2
<r2> 80.052
(<r2>)1/2 8.947