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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBEPBE/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 PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-116.501784
Energy at 298.15K-116.504934
HF Energy-116.501784
Nuclear repulsion energy63.617608
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 PBEPBE/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 3220 3198 0.04 161.91 0.15 0.27
2 A1 2973 2952 73.53 157.19 0.14 0.24
3 A1 1689 1677 12.73 42.84 0.14 0.25
4 A1 1472 1462 2.49 14.86 0.24 0.39
5 A1 1134 1127 0.94 12.64 0.14 0.25
6 A1 893 887 4.95 5.28 0.65 0.79
7 A2 989 982 0.00 6.93 0.75 0.86
8 A2 827 821 0.00 0.01 0.75 0.86
9 B1 3034 3013 46.26 104.12 0.75 0.86
10 B1 1079 1071 1.43 1.42 0.75 0.86
11 B1 578 574 71.23 0.93 0.75 0.86
12 B2 3175 3153 0.10 86.54 0.75 0.86
13 B2 1032 1025 28.34 0.09 0.75 0.86
14 B2 993 986 30.56 0.01 0.75 0.86
15 B2 774 768 14.81 15.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11930.0 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 11847.7 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 PBEPBE/cc-pVTZ
ABC
0.99930 0.72747 0.46008

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.649 -0.501
C3 0.000 -0.649 -0.501
H4 0.000 1.585 -1.046
H5 0.000 -1.585 -1.046
H6 0.919 0.000 1.463
H7 -0.919 0.000 1.463

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51081.51082.48142.48141.09711.0971
C21.51081.29771.08322.29942.26332.2633
C31.51081.29772.29941.08322.26332.2633
H42.48141.08322.29943.17023.10663.1066
H52.48142.29941.08323.17023.10663.1066
H61.09712.26332.26333.10663.10661.8373
H71.09712.26332.26333.10663.10661.8373

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.566 C1 C2 H4 145.627
C1 C3 C2 64.566 C1 C3 H5 145.627
C2 C1 C3 50.867 C2 C1 H6 119.582
C2 C1 H7 119.582 C2 C3 H5 149.806
C3 C1 H6 119.582 C3 C1 H7 119.582
C3 C2 H4 149.806 H6 C1 H7 113.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.179      
2 C -0.108      
3 C -0.108      
4 H 0.113      
5 H 0.113      
6 H 0.085      
7 H 0.085      


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 -0.487 0.487
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.463 0.000 0.000
y 0.000 -16.947 0.000
z 0.000 0.000 -18.666
Traceless
 xyz
x -1.656 0.000 0.000
y 0.000 2.117 0.000
z 0.000 0.000 -0.462
Polar
3z2-r2-0.923
x2-y2-2.516
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.638 0.000 0.000
y 0.000 5.318 0.000
z 0.000 0.000 5.515


<r2> (average value of r2) Å2
<r2> 37.185
(<r2>)1/2 6.098