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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: HF/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at HF/aug-cc-pVQZ
 hartrees
Energy at 0K-115.873997
Energy at 298.15K-115.877388
HF Energy-115.873997
Nuclear repulsion energy64.586807
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 HF/aug-cc-pVQZ
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 3459 3142 0.69 111.06 0.14 0.25
2 A1 3177 2886 86.59 141.05 0.13 0.23
3 A1 1850 1681 27.10 83.80 0.06 0.12
4 A1 1642 1492 1.45 12.49 0.12 0.21
5 A1 1236 1123 0.04 17.49 0.12 0.22
6 A1 1008 916 3.14 5.56 0.53 0.69
7 A2 1099 998 0.00 3.51 0.75 0.86
8 A2 989 898 0.00 2.23 0.75 0.86
9 B1 3233 2937 53.24 103.13 0.75 0.86
10 B1 1198 1088 2.96 0.10 0.75 0.86
11 B1 692 628 101.03 0.02 0.75 0.86
12 B2 3409 3097 1.02 65.42 0.75 0.86
13 B2 1187 1078 20.45 0.55 0.75 0.86
14 B2 1160 1054 42.24 0.08 0.75 0.86
15 B2 868 789 21.16 13.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13102.9 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 11904.0 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 HF/aug-cc-pVQZ
ABC
1.03943 0.74308 0.47323

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.855
C2 0.000 0.635 -0.497
C3 0.000 -0.635 -0.497
H4 0.000 1.557 -1.030
H5 0.000 -1.557 -1.030
H6 0.902 0.000 1.448
H7 -0.902 0.000 1.448

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49361.49362.44512.44511.07991.0799
C21.49361.27091.06492.25642.23642.2364
C31.49361.27092.25641.06492.23642.2364
H42.44511.06492.25643.11413.06303.0630
H52.44512.25641.06493.11413.06303.0630
H61.07992.23642.23643.06303.06301.8045
H71.07992.23642.23643.06303.06301.8045

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.822 C1 C2 H4 145.243
C1 C3 C2 64.822 C1 C3 H5 145.243
C2 C1 C3 50.355 C2 C1 H6 119.819
C2 C1 H7 119.819 C2 C3 H5 149.934
C3 C1 H6 119.819 C3 C1 H7 119.819
C3 C2 H4 149.934 H6 C1 H7 113.339
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.539      
2 C -0.553      
3 C -0.553      
4 H 0.485      
5 H 0.485      
6 H 0.337      
7 H 0.337      


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 -0.506 0.506
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.698 0.000 0.000
y 0.000 -16.743 0.000
z 0.000 0.000 -18.695
Traceless
 xyz
x -1.979 0.000 0.000
y 0.000 2.453 0.000
z 0.000 0.000 -0.474
Polar
3z2-r2-0.948
x2-y2-2.955
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.013 0.000 0.000
y 0.000 5.344 0.000
z 0.000 0.000 5.387


<r2> (average value of r2) Å2
<r2> 36.467
(<r2>)1/2 6.039