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All results from a given calculation for C3H6 (Cyclopropane)

using model chemistry: QCISD(TQ)/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at QCISD(TQ)/3-21G*
 hartrees
Energy at 0K-116.714756
Energy at 298.15K-116.721117
HF Energy-116.399142
Nuclear repulsion energy74.606134
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 QCISD(TQ)/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' 3145 3145        
2 A1' 1553 1553        
3 A1' 1116 1116        
4 A1" 1186 1186        
5 A2' 1145 1145        
6 A2" 3236 3236        
7 A2" 863 863        
8 E' 3134 3134        
8 E' 3134 3134        
9 E' 1530 1530        
9 E' 1530 1530        
10 E' 1122 1122        
10 E' 1122 1122        
11 E' 827 827        
11 E' 827 827        
12 E" 3214 3214        
12 E" 3214 3214        
13 E" 1233 1233        
13 E" 1233 1233        
14 E" 775 775        
14 E" 775 775        

Unscaled Zero Point Vibrational Energy (zpe) 17957.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17957.1 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 QCISD(TQ)/3-21G*
ABC
0.65148 0.65148 0.40546

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/3-21G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.889 0.000
C2 0.770 -0.444 0.000
C3 -0.770 -0.444 0.000
H4 0.000 1.473 0.917
H5 1.276 -0.737 0.917
H6 -1.276 -0.737 0.917
H7 0.000 1.473 -0.917
H8 1.276 -0.737 -0.917
H9 -1.276 -0.737 -0.917

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.53971.53971.08772.26112.26111.08772.26112.2611
C21.53971.53972.26111.08772.26112.26111.08772.2611
C31.53971.53972.26112.26111.08772.26112.26111.0877
H41.08772.26112.26112.55212.55211.83453.14313.1431
H52.26111.08772.26112.55212.55213.14311.83453.1431
H62.26112.26111.08772.55212.55213.14313.14311.8345
H71.08772.26112.26111.83453.14313.14312.55212.5521
H82.26111.08772.26113.14311.83453.14312.55212.5521
H92.26112.26111.08773.14313.14311.83452.55212.5521

picture of Cyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 60.000 C1 C2 H5 117.736
C1 C2 H8 117.736 C1 C3 C2 60.000
C1 C3 H6 117.736 C1 C3 H9 117.736
C2 C1 C3 60.000 C2 C1 H4 117.736
C2 C1 H7 117.736 C2 C3 H6 117.736
C2 C3 H9 117.736 C3 C1 H4 117.736
C3 C1 H7 117.736 C3 C2 H5 117.736
C3 C2 H8 117.736 H4 C1 H7 114.986
H5 C2 H8 114.986 H6 C3 H9 114.986
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability