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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B3PW91/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-116.618739
Energy at 298.15K-116.621966
HF Energy-116.618739
Nuclear repulsion energy64.063675
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 B3PW91/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 3303 3176 0.08 142.43 0.15 0.27
2 A1 3043 2926 73.00 149.32 0.14 0.25
3 A1 1740 1674 14.41 46.23 0.14 0.25
4 A1 1518 1460 2.02 13.76 0.23 0.38
5 A1 1169 1124 0.49 13.16 0.14 0.25
6 A1 924 888 4.91 4.85 0.64 0.78
7 A2 1019 980 0.00 6.52 0.75 0.86
8 A2 871 838 0.00 0.14 0.75 0.86
9 B1 3107 2988 45.16 98.81 0.75 0.86
10 B1 1112 1069 1.72 1.19 0.75 0.86
11 B1 607 584 78.33 0.60 0.75 0.86
12 B2 3255 3130 0.11 75.53 0.75 0.86
13 B2 1074 1033 26.93 0.01 0.75 0.86
14 B2 1037 997 32.00 0.00 0.75 0.86
15 B2 805 774 17.34 15.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12292.7 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 11820.7 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 B3PW91/cc-pVTZ
ABC
1.01474 0.73674 0.46644

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.858
C2 0.000 0.644 -0.498
C3 0.000 -0.644 -0.498
H4 0.000 1.574 -1.038
H5 0.000 -1.574 -1.038
H6 0.912 0.000 1.454
H7 -0.912 0.000 1.454

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50101.50102.46422.46421.08971.0897
C21.50101.28741.07562.28232.24892.2489
C31.50101.28742.28231.07562.24892.2489
H42.46421.07562.28233.14753.08563.0856
H52.46422.28231.07563.14753.08563.0856
H61.08972.24892.24893.08563.08561.8241
H71.08972.24892.24893.08563.08561.8241

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.606 C1 C2 H4 145.544
C1 C3 C2 64.606 C1 C3 H5 145.544
C2 C1 C3 50.788 C2 C1 H6 119.627
C2 C1 H7 119.627 C2 C3 H5 149.850
C3 C1 H6 119.627 C3 C1 H7 119.627
C3 C2 H4 149.850 H6 C1 H7 113.646
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.186      
2 C -0.110      
3 C -0.110      
4 H 0.116      
5 H 0.116      
6 H 0.087      
7 H 0.087      


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 -0.494 0.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.303 0.000 0.000
y 0.000 -16.691 0.000
z 0.000 0.000 -18.463
Traceless
 xyz
x -1.726 0.000 0.000
y 0.000 2.191 0.000
z 0.000 0.000 -0.465
Polar
3z2-r2-0.931
x2-y2-2.611
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.554 0.000 0.000
y 0.000 5.173 0.000
z 0.000 0.000 5.333


<r2> (average value of r2) Å2
<r2> 36.705
(<r2>)1/2 6.058