return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H6 (Cyclopropane)

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-117.825335
Energy at 298.15K 
HF Energy-117.825335
Nuclear repulsion energy76.000266
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 B1B95/6-31G*
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' 3186 3025 0.00 238.84 0.04 0.08
2 A1' 1554 1476 0.00 5.06 0.75 0.86
3 A1' 1256 1192 0.00 28.30 0.10 0.17
4 A1" 1167 1108 0.00 0.00 0.75 0.86
5 A2' 1091 1036 0.00 0.00 0.75 0.86
6 A2" 3276 3110 32.32 0.00 0.75 0.86
7 A2" 865 821 0.68 0.00 0.75 0.86
8 E' 3178 3017 25.04 20.09 0.75 0.86
8 E' 3178 3017 25.04 20.09 0.75 0.86
9 E' 1495 1419 0.79 8.93 0.75 0.86
9 E' 1495 1419 0.79 8.93 0.75 0.86
10 E' 1075 1020 8.35 0.04 0.75 0.86
10 E' 1075 1020 8.35 0.04 0.75 0.86
11 E' 930 882 19.88 14.14 0.75 0.86
11 E' 930 882 19.88 14.14 0.75 0.86
12 E" 3257 3091 0.00 94.08 0.75 0.86
12 E" 3257 3091 0.00 94.08 0.75 0.86
13 E" 1225 1163 0.00 11.17 0.75 0.86
13 E" 1225 1163 0.00 11.17 0.75 0.86
14 E" 743 705 0.00 2.62 0.75 0.86
14 E" 743 705 0.00 2.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18099.7 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 17182.0 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 B1B95/6-31G*
ABC
0.67788 0.67788 0.42423

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.865 0.000
C2 0.749 -0.432 0.000
C3 -0.749 -0.432 0.000
H4 0.000 1.455 0.909
H5 1.260 -0.728 0.909
H6 -1.260 -0.728 0.909
H7 0.000 1.455 -0.909
H8 1.260 -0.728 -0.909
H9 -1.260 -0.728 -0.909

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.49821.49821.08392.22502.22501.08392.22502.2250
C21.49821.49822.22501.08392.22502.22501.08392.2250
C31.49821.49822.22502.22501.08392.22502.22501.0839
H41.08392.22502.22502.52012.52011.81853.10783.1078
H52.22501.08392.22502.52012.52013.10781.81853.1078
H62.22502.22501.08392.52012.52013.10783.10781.8185
H71.08392.22502.22501.81853.10783.10782.52012.5201
H82.22501.08392.22503.10781.81853.10782.52012.5201
H92.22502.22501.08393.10783.10781.81852.52012.5201

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 118.125
C1 C2 H8 118.125 C1 C3 C2 60.000
C1 C3 H6 118.125 C1 C3 H9 118.125
C2 C1 C3 60.000 C2 C1 H4 118.125
C2 C1 H7 118.125 C2 C3 H6 118.125
C2 C3 H9 118.125 C3 C1 H4 118.125
C3 C1 H7 118.125 C3 C2 H5 118.125
C3 C2 H8 118.125 H4 C1 H7 114.042
H5 C2 H8 114.042 H6 C3 H9 114.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.343      
2 C -0.343      
3 C -0.343      
4 H 0.171      
5 H 0.171      
6 H 0.171      
7 H 0.171      
8 H 0.171      
9 H 0.171      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.191 0.000 0.000
y 0.000 -20.191 0.000
z 0.000 0.000 -17.992
Traceless
 xyz
x -1.099 0.000 0.000
y 0.000 -1.099 0.000
z 0.000 0.000 2.199
Polar
3z2-r24.398
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.402 0.000 0.000
y 0.000 4.402 0.000
z 0.000 0.000 4.285


<r2> (average value of r2) Å2
<r2> 43.284
(<r2>)1/2 6.579