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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B2PLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-116.494049
Energy at 298.15K-116.497245
HF Energy-116.357649
Nuclear repulsion energy63.696835
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/6-31+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 A1 3347 3187 0.01 147.41 0.15 0.26
2 A1 3096 2949 64.42 119.42 0.18 0.30
3 A1 1724 1641 19.91 52.52 0.11 0.20
4 A1 1551 1477 2.97 13.32 0.26 0.41
5 A1 1170 1114 0.11 18.95 0.15 0.27
6 A1 939 894 5.21 5.73 0.49 0.66
7 A2 1026 977 0.00 4.88 0.75 0.86
8 A2 839 799 0.00 0.54 0.75 0.86
9 B1 3166 3016 44.55 104.50 0.75 0.86
10 B1 1126 1073 1.08 0.60 0.75 0.86
11 B1 580 553 98.58 0.10 0.75 0.86
12 B2 3303 3146 0.18 83.50 0.75 0.86
13 B2 1090 1038 30.09 0.06 0.75 0.86
14 B2 1048 998 35.76 0.04 0.75 0.86
15 B2 792 754 16.30 16.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12397.8 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 11807.7 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/6-31+G**
ABC
1.00046 0.72959 0.46058

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.650 -0.501
C3 0.000 -0.650 -0.501
H4 0.000 1.581 -1.041
H5 0.000 -1.581 -1.041
H6 0.912 0.000 1.459
H7 -0.912 0.000 1.459

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51121.51122.47502.47501.08961.0896
C21.51121.29981.07612.29502.25762.2576
C31.51121.29982.29501.07612.25762.2576
H42.47501.07612.29503.16123.09553.0955
H52.47502.29501.07613.16123.09553.0955
H61.08962.25762.25763.09553.09551.8245
H71.08962.25762.25763.09553.09551.8245

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.530 C1 C2 H4 145.601
C1 C3 C2 64.530 C1 C3 H5 145.601
C2 C1 C3 50.940 C2 C1 H6 119.580
C2 C1 H7 119.580 C2 C3 H5 149.869
C3 C1 H6 119.580 C3 C1 H7 119.580
C3 C2 H4 149.869 H6 C1 H7 113.707
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.267      
2 C -0.141      
3 C -0.141      
4 H 0.147      
5 H 0.147      
6 H 0.128      
7 H 0.128      


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 -0.435 0.435
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.762 0.000 0.000
y 0.000 -17.175 0.000
z 0.000 0.000 -18.835
Traceless
 xyz
x -1.758 0.000 0.000
y 0.000 2.124 0.000
z 0.000 0.000 -0.366
Polar
3z2-r2-0.732
x2-y2-2.588
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.592 0.000 0.000
y 0.000 5.197 0.000
z 0.000 0.000 5.290


<r2> (average value of r2) Å2
<r2> 37.251
(<r2>)1/2 6.103