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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBEPBEultrafine/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-115.807924
Energy at 298.15K-115.811094
HF Energy-115.807924
Nuclear repulsion energy62.931866
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 PBEPBEultrafine/3-21G
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 3269 3240 0.03 120.06 0.12 0.21
2 A1 3024 2996 40.88 105.92 0.15 0.26
3 A1 1662 1647 7.10 26.02 0.23 0.37
4 A1 1513 1499 1.34 15.79 0.36 0.53
5 A1 1099 1089 2.64 6.81 0.17 0.30
6 A1 902 894 4.31 9.82 0.60 0.75
7 A2 1009 1000 0.00 19.23 0.75 0.86
8 A2 859 851 0.00 0.05 0.75 0.86
9 B1 3102 3074 41.88 75.01 0.75 0.86
10 B1 1085 1075 1.82 4.26 0.75 0.86
11 B1 629 623 95.40 1.45 0.75 0.86
12 B2 3219 3189 0.00 64.91 0.75 0.86
13 B2 1056 1046 24.11 0.41 0.75 0.86
14 B2 1017 1008 54.79 0.80 0.75 0.86
15 B2 724 717 8.16 16.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12084.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 11974.3 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 PBEPBEultrafine/3-21G
ABC
0.98432 0.70531 0.44872

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.882
C2 0.000 0.656 -0.510
C3 0.000 -0.656 -0.510
H4 0.000 1.588 -1.056
H5 0.000 -1.588 -1.056
H6 0.926 0.000 1.470
H7 -0.926 0.000 1.470

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.53891.53892.50592.50591.09711.0971
C21.53891.31111.08072.30912.28222.2822
C31.53891.31112.30911.08072.28222.2822
H42.50591.08072.30913.17603.12453.1245
H52.50592.30911.08073.17603.12453.1245
H61.09712.28222.28223.12453.12451.8526
H71.09712.28222.28223.12453.12451.8526

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.787 C1 C2 H4 145.576
C1 C3 C2 64.787 C1 C3 H5 145.576
C2 C1 C3 50.426 C2 C1 H6 118.998
C2 C1 H7 118.998 C2 C3 H5 149.637
C3 C1 H6 118.998 C3 C1 H7 118.998
C3 C2 H4 149.637 H6 C1 H7 115.199
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.389      
2 C -0.195      
3 C -0.195      
4 H 0.188      
5 H 0.188      
6 H 0.202      
7 H 0.202      


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 -0.473 0.473
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.452 0.000 0.000
y 0.000 -16.872 0.000
z 0.000 0.000 -18.008
Traceless
 xyz
x -2.012 0.000 0.000
y 0.000 1.857 0.000
z 0.000 0.000 0.154
Polar
3z2-r20.308
x2-y2-2.579
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.424 0.000 0.000
y 0.000 4.384 0.000
z 0.000 0.000 4.514


<r2> (average value of r2) Å2
<r2> 37.573
(<r2>)1/2 6.130