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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B2PLYP/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 B2PLYP/6-31G
 hartrees
Energy at 0K-116.395722
Energy at 298.15K-116.398941
HF Energy-116.302844
Nuclear repulsion energy63.183811
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 B2PLYP/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 3369 3369 0.00 137.66 0.12 0.21
2 A1 3116 3116 47.80 121.19 0.15 0.26
3 A1 1703 1703 12.52 26.33 0.24 0.38
4 A1 1577 1577 1.46 19.05 0.27 0.42
5 A1 1160 1160 0.26 7.92 0.17 0.29
6 A1 949 949 3.93 10.77 0.60 0.75
7 A2 1038 1038 0.00 18.82 0.75 0.86
8 A2 856 856 0.00 0.03 0.75 0.86
9 B1 3191 3191 56.55 83.90 0.75 0.86
10 B1 1140 1140 1.48 4.08 0.75 0.86
11 B1 609 609 94.31 1.53 0.75 0.86
12 B2 3320 3320 0.01 71.96 0.75 0.86
13 B2 1132 1132 23.89 0.59 0.75 0.86
14 B2 1086 1086 45.43 0.69 0.75 0.86
15 B2 759 759 9.82 18.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12502.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12502.5 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 B2PLYP/6-31G
ABC
0.99108 0.71217 0.45158

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.876
C2 0.000 0.655 -0.508
C3 0.000 -0.655 -0.508
H4 0.000 1.582 -1.052
H5 0.000 -1.582 -1.052
H6 0.912 0.000 1.472
H7 -0.912 0.000 1.472

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.53161.53162.49412.49411.08901.0890
C21.53161.30981.07462.30172.27632.2763
C31.53161.30982.30171.07462.27632.2763
H42.49411.07462.30173.16313.11533.1153
H52.49412.30171.07463.16313.11533.1153
H61.08902.27632.27633.11533.11531.8231
H71.08902.27632.27633.11533.11531.8231

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.685 C1 C2 H4 145.735
C1 C3 C2 64.685 C1 C3 H5 145.735
C2 C1 C3 50.629 C2 C1 H6 119.643
C2 C1 H7 119.643 C2 C3 H5 149.579
C3 C1 H6 119.643 C3 C1 H7 119.643
C3 C2 H4 149.579 H6 C1 H7 113.658
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314      
2 C -0.134      
3 C -0.134      
4 H 0.159      
5 H 0.159      
6 H 0.133      
7 H 0.133      


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 -0.479 0.479
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.329 0.000 0.000
y 0.000 -17.123 0.000
z 0.000 0.000 -18.290
Traceless
 xyz
x -1.622 0.000 0.000
y 0.000 1.686 0.000
z 0.000 0.000 -0.064
Polar
3z2-r2-0.128
x2-y2-2.206
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.583 0.000 0.000
y 0.000 4.553 0.000
z 0.000 0.000 4.679


<r2> (average value of r2) Å2
<r2> 37.464
(<r2>)1/2 6.121