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All results from a given calculation for C5H8 (Bicyclo[2.1.0]pentane)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-195.274707
Energy at 298.15K-195.283909
Nuclear repulsion energy176.527757
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 mPW1PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3219 3072 33.65      
2 A' 3200 3054 8.99      
3 A' 3138 2995 58.64      
4 A' 3116 2974 27.99      
5 A' 3071 2931 71.39      
6 A' 1526 1457 1.81      
7 A' 1503 1434 4.31      
8 A' 1389 1325 0.23      
9 A' 1263 1206 2.14      
10 A' 1230 1174 0.09      
11 A' 1148 1096 0.52      
12 A' 1046 998 0.28      
13 A' 1003 957 2.92      
14 A' 958 914 8.58      
15 A' 924 881 1.29      
16 A' 794 758 0.46      
17 A' 789 753 10.18      
18 A' 417 398 0.71      
19 A" 3192 3046 30.83      
20 A" 3118 2976 1.04      
21 A" 3061 2921 57.99      
22 A" 1498 1429 0.91      
23 A" 1326 1265 7.64      
24 A" 1271 1213 1.69      
25 A" 1239 1183 0.16      
26 A" 1137 1086 0.13      
27 A" 1085 1036 3.94      
28 A" 1062 1013 0.51      
29 A" 1008 962 5.02      
30 A" 946 903 0.25      
31 A" 816 779 18.05      
32 A" 691 660 0.15      
33 A" 269 256 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 25725.3 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 24552.2 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 mPW1PW91/6-311G*
ABC
0.30733 0.20525 0.16066

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 -0.536 0.763
C2 -0.245 -0.536 -0.763
C3 -0.245 0.989 0.778
C4 -0.245 0.989 -0.778
C5 0.939 -1.041 0.000
H6 -0.797 -1.176 1.442
H7 -0.797 -1.176 -1.442
H8 0.607 1.461 1.277
H9 0.607 1.461 -1.277
H10 -1.162 1.415 1.186
H11 -1.162 1.415 -1.186
H12 1.871 -0.478 0.000
H13 1.069 -2.117 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52691.52582.16881.49611.08352.36152.23112.97932.19722.90692.24952.1924
C21.52692.16881.52581.49612.36151.08352.97932.23112.90692.19722.24952.1924
C31.52582.16881.55582.47532.33093.14951.09402.27351.09062.20912.68953.4612
C42.16881.52581.55582.47533.14952.33092.27351.09402.20911.09062.68953.4612
C51.49611.49612.47532.47532.26092.26092.82782.82783.44263.44261.08791.0842
H61.08352.36152.33093.14952.26092.88352.99174.03882.62853.70803.11152.5391
H72.36151.08353.14952.33092.26092.88354.03882.99173.70802.62853.11152.5391
H82.23112.97931.09402.27352.82782.99174.03882.55301.77253.03282.64293.8266
H92.97932.23112.27351.09402.82784.03882.99172.55303.03281.77252.64293.8266
H102.19722.90691.09062.20913.44262.62853.70801.77253.03282.37213.76674.3427
H112.90692.19722.20911.09063.44263.70802.62853.03281.77252.37213.76674.3427
H122.24952.24952.68952.68951.08793.11153.11152.64292.64293.76673.76671.8243
H132.19242.19243.46123.46121.08422.53912.53913.82663.82664.34274.34271.8243

picture of Bicyclo[2.1.0]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 90.543 C1 C2 C5 59.318
C1 C2 H7 128.759 C1 C3 C4 89.457
C1 C3 H8 115.799 C1 C3 H10 113.182
C1 C5 C2 61.365 C1 C5 H12 120.213
C1 C5 H13 115.418 C2 C1 C3 90.543
C2 C1 C5 59.318 C2 C1 H6 128.759
C2 C4 C3 89.457 C2 C4 H9 115.799
C2 C4 H11 113.182 C2 C5 H12 120.213
C2 C5 H13 115.418 C3 C1 C5 109.987
C3 C1 H6 125.730 C3 C4 H9 117.114
C3 C4 H11 111.975 C4 C2 C5 109.987
C4 C2 H7 125.730 C4 C3 H8 117.114
C4 C3 H10 111.975 C5 C1 H6 121.611
C5 C2 H7 121.611 H8 C3 H10 108.456
H9 C4 H11 108.456 H12 C5 H13 114.248
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.218      
2 C -0.218      
3 C -0.428      
4 C -0.428      
5 C -0.443      
6 H 0.201      
7 H 0.201      
8 H 0.215      
9 H 0.215      
10 H 0.227      
11 H 0.227      
12 H 0.214      
13 H 0.234      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.276 -0.084 0.000 0.289
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.227 0.171 0.000
y 0.171 -30.698 0.000
z 0.000 0.000 -32.474
Traceless
 xyz
x 0.359 0.171 0.000
y 0.171 1.153 0.000
z 0.000 0.000 -1.512
Polar
3z2-r2-3.024
x2-y2-0.529
xy0.171
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 97.661
(<r2>)1/2 9.882