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 C5H6 (Propellane)

using model chemistry: MP2/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-31.468092
Energy at 298.15K-31.474559
HF Energy-30.799821
Nuclear repulsion energy84.255101
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 MP2/CEP-121G*
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' 3152 3003 0.00      
2 A1' 1564 1490 0.00      
3 A1' 1143 1090 0.00      
4 A1' 912 869 0.00      
5 A1" 921 877 0.00      
6 A2' 3249 3096 0.00      
7 A2' 967 921 0.00      
8 A2" 1131 1077 39.16      
9 A2" 657 626 88.92      
10 E' 3252 3098 15.12      
10 E' 3252 3098 15.12      
11 E' 3148 3000 24.07      
11 E' 3148 3000 24.07      
12 E' 1513 1442 2.43      
12 E' 1513 1442 2.43      
13 E' 1219 1161 0.64      
13 E' 1219 1161 0.64      
14 E' 1111 1059 0.52      
14 E' 1111 1059 0.52      
15 E' 536 510 0.09      
15 E' 536 510 0.09      
16 E" 1150 1096 0.00      
16 E" 1150 1096 0.00      
17 E" 1079 1028 0.00      
17 E" 1079 1028 0.00      
18 E" 758 723 0.00      
18 E" 758 723 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20613.8 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 19640.8 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 MP2/CEP-121G*
ABC
0.28287 0.28287 0.19294

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.300 0.000
C2 0.000 0.000 0.814
C3 1.126 -0.650 0.000
C4 -1.126 -0.650 0.000
C5 0.000 0.000 -0.814
H6 0.920 1.883 0.000
H7 -0.920 1.883 0.000
H8 1.170 -1.738 0.000
H9 2.091 -0.144 0.000
H10 -2.091 -0.144 0.000
H11 -1.170 -1.738 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.53372.25122.25121.53371.08951.08953.25582.54092.54093.2558
C21.53371.53371.53371.62842.24822.24822.24822.24822.24822.2482
C32.25121.53372.25121.53372.54093.25581.08951.08953.25582.5409
C42.25121.53372.25121.53373.25582.54092.54093.25581.08951.0895
C51.53371.62841.53371.53372.24822.24822.24822.24822.24822.2482
H61.08952.24822.54093.25582.24821.84083.62972.34053.62974.1813
H71.08952.24823.25582.54092.24821.84084.18133.62972.34053.6297
H83.25582.24821.08952.54092.24823.62974.18131.84083.62972.3405
H92.54092.24821.08953.25582.24822.34053.62971.84084.18133.6297
H102.54092.24823.25581.08952.24823.62972.34053.62974.18131.8408
H113.25582.24822.54091.08952.24824.18133.62972.34053.62971.8408

picture of Propellane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 94.431 C1 C2 C4 94.431
C1 C2 C5 57.935 C1 C5 C2 57.935
C1 C5 C3 94.431 C1 C5 C4 94.431
C2 C1 C5 64.129 C2 C1 H6 116.965
C2 C1 H7 116.965 C2 C3 C5 64.129
C2 C3 H8 116.965 C2 C3 H9 116.965
C2 C4 C5 64.129 C2 C4 H10 116.965
C2 C4 H11 116.965 C3 C2 C4 94.431
C3 C2 C5 57.935 C3 C5 C4 94.431
C4 C2 C5 57.935 C5 C1 H6 116.965
C5 C1 H7 116.965 C5 C3 H8 116.965
C5 C3 H9 116.965 C5 C4 H10 116.965
C5 C4 H11 116.965 H6 C1 H7 115.302
H8 C3 H9 115.302 H10 C4 H11 115.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability