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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: HF/TZVP

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/TZVP
 hartrees
Energy at 0K-115.861423
Energy at 298.15K-115.864813
HF Energy-115.861423
Nuclear repulsion energy64.526548
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/TZVP
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 3468 3151 0.78 107.18 0.14 0.25
2 A1 3183 2892 81.06 140.86 0.18 0.30
3 A1 1860 1690 26.15 72.58 0.12 0.21
4 A1 1645 1494 2.62 12.89 0.19 0.31
5 A1 1236 1123 0.02 15.74 0.17 0.29
6 A1 1009 917 3.44 6.04 0.50 0.67
7 A2 1099 999 0.00 9.44 0.75 0.86
8 A2 976 887 0.00 0.37 0.75 0.86
9 B1 3243 2946 58.64 100.89 0.75 0.86
10 B1 1199 1089 3.76 0.87 0.75 0.86
11 B1 694 631 114.16 0.30 0.75 0.86
12 B2 3418 3105 1.70 63.61 0.75 0.86
13 B2 1186 1077 22.39 0.81 0.75 0.86
14 B2 1160 1054 42.79 0.02 0.75 0.86
15 B2 866 787 23.22 18.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13120.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 11921.7 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 HF/TZVP
ABC
1.03792 0.74143 0.47238

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.856
C2 0.000 0.636 -0.498
C3 0.000 -0.636 -0.498
H4 0.000 1.559 -1.031
H5 0.000 -1.559 -1.031
H6 0.904 0.000 1.450
H7 -0.904 0.000 1.450

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49511.49512.44762.44761.08141.0814
C21.49511.27131.06642.25862.23892.2389
C31.49511.27132.25861.06642.23892.2389
H42.44761.06642.25863.11793.06633.0663
H52.44762.25861.06643.11793.06633.0663
H61.08142.23892.23893.06633.06631.8072
H71.08142.23892.23893.06633.06631.8072

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.839 C1 C2 H4 145.186
C1 C3 C2 64.839 C1 C3 H5 145.186
C2 C1 C3 50.321 C2 C1 H6 119.819
C2 C1 H7 119.819 C2 C3 H5 149.975
C3 C1 H6 119.819 C3 C1 H7 119.819
C3 C2 H4 149.975 H6 C1 H7 113.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.170      
2 C -0.140      
3 C -0.140      
4 H 0.149      
5 H 0.149      
6 H 0.076      
7 H 0.076      


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 -0.503 0.503
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.674 0.000 0.000
y 0.000 -16.856 0.000
z 0.000 0.000 -18.631
Traceless
 xyz
x -1.930 0.000 0.000
y 0.000 2.296 0.000
z 0.000 0.000 -0.366
Polar
3z2-r2-0.732
x2-y2-2.818
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.411 0.000 0.000
y 0.000 5.095 0.000
z 0.000 0.000 5.177


<r2> (average value of r2) Å2
<r2> 36.521
(<r2>)1/2 6.043