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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBEPBEultrafine/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-116.468512
Energy at 298.15K-116.471685
HF Energy-116.468512
Nuclear repulsion energy63.505392
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/6-31G(2df,p)
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 3247 3213 0.14 142.62 0.13 0.24
2 A1 2977 2946 65.97 124.71 0.14 0.25
3 A1 1697 1680 9.99 32.93 0.16 0.28
4 A1 1476 1461 3.81 15.88 0.33 0.50
5 A1 1149 1138 1.85 9.30 0.14 0.25
6 A1 912 903 3.56 9.20 0.66 0.79
7 A2 991 981 0.00 13.29 0.75 0.86
8 A2 838 829 0.00 0.02 0.75 0.86
9 B1 3041 3010 48.14 84.90 0.75 0.86
10 B1 1081 1070 1.80 2.54 0.75 0.86
11 B1 607 600 55.56 1.48 0.75 0.86
12 B2 3199 3166 0.17 76.27 0.75 0.86
13 B2 1037 1026 35.78 0.37 0.75 0.86
14 B2 996 986 20.01 0.13 0.75 0.86
15 B2 786 778 11.21 17.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12017.0 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 11893.2 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/6-31G(2df,p)
ABC
0.99349 0.72663 0.45858

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.651 -0.502
C3 0.000 -0.651 -0.502
H4 0.000 1.590 -1.044
H5 0.000 -1.590 -1.044
H6 0.919 0.000 1.468
H7 -0.919 0.000 1.468

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51181.51182.48252.48251.10071.1007
C21.51181.30181.08432.30552.26912.2691
C31.51181.30182.30551.08432.26912.2691
H42.48251.08432.30553.18003.11163.1116
H52.48252.30551.08433.18003.11163.1116
H61.10072.26912.26913.11163.11161.8388
H71.10072.26912.26913.11163.11161.8388

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.497 C1 C2 H4 145.495
C1 C3 C2 64.497 C1 C3 H5 145.495
C2 C1 C3 51.006 C2 C1 H6 119.753
C2 C1 H7 119.753 C2 C3 H5 150.008
C3 C1 H6 119.753 C3 C1 H7 119.753
C3 C2 H4 150.008 H6 C1 H7 113.288
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.320      
2 C -0.088      
3 C -0.088      
4 H 0.141      
5 H 0.141      
6 H 0.107      
7 H 0.107      


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 -0.529 0.529
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.911 0.000 0.000
y 0.000 -16.616 0.000
z 0.000 0.000 -18.164
Traceless
 xyz
x -1.521 0.000 0.000
y 0.000 1.921 0.000
z 0.000 0.000 -0.400
Polar
3z2-r2-0.800
x2-y2-2.295
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.076 0.000 0.000
y 0.000 4.827 0.000
z 0.000 0.000 4.941


<r2> (average value of r2) Å2
<r2> 36.985
(<r2>)1/2 6.082