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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: HF/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-115.867207
Energy at 298.15K-115.870589
HF Energy-115.867207
Nuclear repulsion energy64.550777
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/daug-cc-pVTZ
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 3457 3127 0.73 111.29 0.14 0.24
2 A1 3178 2874 86.49 141.22 0.13 0.23
3 A1 1850 1673 27.09 84.57 0.06 0.12
4 A1 1641 1485 1.48 12.50 0.12 0.21
5 A1 1235 1118 0.04 17.46 0.12 0.22
6 A1 1008 912 3.14 5.57 0.53 0.70
7 A2 1098 994 0.00 3.50 0.75 0.86
8 A2 987 893 0.00 2.28 0.75 0.86
9 B1 3234 2926 53.07 103.32 0.75 0.86
10 B1 1195 1081 2.94 0.10 0.75 0.86
11 B1 690 625 101.38 0.02 0.75 0.86
12 B2 3406 3081 1.09 65.58 0.75 0.86
13 B2 1185 1072 20.21 0.55 0.75 0.86
14 B2 1159 1048 42.57 0.08 0.75 0.86
15 B2 867 784 21.14 13.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13094.7 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 11845.5 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 HF/daug-cc-pVTZ
ABC
1.03807 0.74235 0.47270

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.855
C2 0.000 0.636 -0.497
C3 0.000 -0.636 -0.497
H4 0.000 1.558 -1.031
H5 0.000 -1.558 -1.031
H6 0.903 0.000 1.449
H7 -0.903 0.000 1.449

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49451.49452.44642.44641.08031.0803
C21.49451.27181.06532.25782.23732.2373
C31.49451.27182.25781.06532.23732.2373
H42.44641.06532.25783.11593.06433.0643
H52.44642.25781.06533.11593.06433.0643
H61.08032.23732.23733.06433.06431.8055
H71.08032.23732.23733.06433.06431.8055

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.819 C1 C2 H4 145.242
C1 C3 C2 64.819 C1 C3 H5 145.242
C2 C1 C3 50.362 C2 C1 H6 119.803
C2 C1 H7 119.803 C2 C3 H5 149.939
C3 C1 H6 119.803 C3 C1 H7 119.803
C3 C2 H4 149.939 H6 C1 H7 113.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.294      
2 C -0.759      
3 C -0.759      
4 H 0.956      
5 H 0.956      
6 H 0.450      
7 H 0.450      


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 -0.505 0.505
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.713 0.000 0.000
y 0.000 -16.748 0.000
z 0.000 0.000 -18.705
Traceless
 xyz
x -1.987 0.000 0.000
y 0.000 2.461 0.000
z 0.000 0.000 -0.474
Polar
3z2-r2-0.948
x2-y2-2.965
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.021 0.000 0.000
y 0.000 5.354 0.000
z 0.000 0.000 5.397


<r2> (average value of r2) Å2
<r2> 36.499
(<r2>)1/2 6.041