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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-116.559256
Energy at 298.15K-116.562491
HF Energy-116.559256
Nuclear repulsion energy64.024435
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 B1B95/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3349 3179 0.02 133.16 0.13 0.23
2 A1 3082 2926 70.58 127.29 0.15 0.26
3 A1 1776 1686 10.84 34.83 0.19 0.32
4 A1 1555 1477 4.86 15.91 0.33 0.50
5 A1 1210 1148 1.03 8.86 0.19 0.33
6 A1 940 892 3.85 8.65 0.67 0.80
7 A2 1033 980 0.00 16.73 0.75 0.86
8 A2 870 826 0.00 0.01 0.75 0.86
9 B1 3145 2986 59.11 89.52 0.75 0.86
10 B1 1131 1074 1.64 3.39 0.75 0.86
11 B1 614 583 68.20 1.60 0.75 0.86
12 B2 3302 3135 0.22 70.73 0.75 0.86
13 B2 1095 1040 39.71 0.44 0.75 0.86
14 B2 1050 996 18.84 0.00 0.75 0.86
15 B2 833 791 15.26 18.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12492.6 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 11859.2 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 B1B95/6-31G*
ABC
1.00869 0.73959 0.46621

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.854
C2 0.000 0.646 -0.497
C3 0.000 -0.646 -0.497
H4 0.000 1.580 -1.035
H5 0.000 -1.580 -1.035
H6 0.911 0.000 1.457
H7 -0.911 0.000 1.457

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49821.49822.46302.46301.09221.0922
C21.49821.29171.07762.28952.25082.2508
C31.49821.29172.28951.07762.25082.2508
H42.46301.07762.28953.15913.08803.0880
H52.46302.28951.07763.15913.08803.0880
H61.09222.25082.25083.08803.08801.8222
H71.09222.25082.25083.08803.08801.8222

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.465 C1 C2 H4 145.482
C1 C3 C2 64.465 C1 C3 H5 145.482
C2 C1 C3 51.071 C2 C1 H6 119.844
C2 C1 H7 119.844 C2 C3 H5 150.053
C3 C1 H6 119.844 C3 C1 H7 119.844
C3 C2 H4 150.053 H6 C1 H7 113.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.357      
2 C -0.136      
3 C -0.136      
4 H 0.165      
5 H 0.165      
6 H 0.150      
7 H 0.150      


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 -0.525 0.525
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.919 0.000 0.000
y 0.000 -16.452 0.000
z 0.000 0.000 -18.047
Traceless
 xyz
x -1.669 0.000 0.000
y 0.000 2.030 0.000
z 0.000 0.000 -0.361
Polar
3z2-r2-0.722
x2-y2-2.466
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.721 0.000 0.000
y 0.000 4.600 0.000
z 0.000 0.000 4.692


<r2> (average value of r2) Å2
<r2> 36.515
(<r2>)1/2 6.043