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

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-195.298219
Energy at 298.15K-195.307363
Nuclear repulsion energy175.540780
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 B3LYP/6-31+G**
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' 3200 3085 29.15      
2 A' 3182 3068 7.54      
3 A' 3115 3003 55.71      
4 A' 3099 2988 25.69      
5 A' 3049 2940 72.42      
6 A' 1513 1459 0.97      
7 A' 1492 1438 2.20      
8 A' 1368 1319 1.18      
9 A' 1247 1202 1.65      
10 A' 1215 1171 0.09      
11 A' 1131 1090 0.77      
12 A' 1030 994 0.02      
13 A' 980 945 3.95      
14 A' 938 904 7.34      
15 A' 905 873 0.86      
16 A' 787 758 1.34      
17 A' 771 744 9.79      
18 A' 416 401 0.48      
19 A" 3175 3061 28.57      
20 A" 3096 2986 1.50      
21 A" 3040 2931 58.26      
22 A" 1486 1433 0.26      
23 A" 1310 1263 6.26      
24 A" 1265 1219 1.30      
25 A" 1221 1178 0.03      
26 A" 1125 1085 0.08      
27 A" 1078 1039 3.31      
28 A" 1055 1017 1.31      
29 A" 992 956 5.47      
30 A" 935 902 0.10      
31 A" 793 765 16.82      
32 A" 683 659 0.05      
33 A" 267 258 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 25478.8 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 24566.7 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 B3LYP/6-31+G**
ABC
0.30428 0.20260 0.15852

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.538 0.767
C2 -0.246 -0.538 -0.767
C3 -0.246 0.997 0.784
C4 -0.246 0.997 -0.784
C5 0.944 -1.052 0.000
H6 -0.801 -1.175 1.449
H7 -0.801 -1.175 -1.449
H8 0.610 1.470 1.281
H9 0.610 1.470 -1.281
H10 -1.166 1.422 1.194
H11 -1.166 1.422 -1.194
H12 1.880 -0.493 0.000
H13 1.069 -2.132 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.53401.53532.18201.50581.08602.37182.24242.99292.20732.92152.26092.2039
C21.53402.18201.53531.50582.37181.08602.99292.24242.92152.20732.26092.2039
C31.53532.18201.56722.49552.33883.16431.09692.28411.09352.22222.71223.4831
C42.18201.53531.56722.49553.16432.33882.28411.09692.22221.09352.71223.4831
C51.50581.50582.49552.49552.27142.27142.84802.84803.46383.46381.09061.0870
H61.08602.37182.33883.16432.27142.89843.00274.05462.63543.72383.12332.5520
H72.37181.08603.16432.33882.27142.89844.05463.00273.72382.63543.12332.5520
H82.24242.99291.09692.28412.84803.00274.05462.56131.77873.04632.66603.8499
H92.99292.24242.28411.09692.84804.05463.00272.56133.04631.77872.66603.8499
H102.20732.92151.09352.22223.46382.63543.72381.77873.04632.38803.79144.3649
H112.92152.20732.22221.09353.46383.72382.63543.04631.77872.38803.79144.3649
H122.26092.26092.71222.71221.09063.12333.12332.66602.66603.79143.79141.8283
H132.20392.20393.48313.48311.08702.55202.55203.84993.84994.36494.36491.8283

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 90.620 C1 C2 C5 59.380
C1 C2 H7 128.917 C1 C3 C4 89.380
C1 C3 H8 115.848 C1 C3 H10 113.131
C1 C5 C2 61.241 C1 C5 H12 120.245
C1 C5 H13 115.474 C2 C1 C3 90.620
C2 C1 C5 59.380 C2 C1 H6 128.917
C2 C4 C3 89.380 C2 C4 H9 115.848
C2 C4 H11 113.131 C2 C5 H12 120.245
C2 C5 H13 115.474 C3 C1 C5 110.283
C3 C1 H6 125.440 C3 C4 H9 116.945
C3 C4 H11 112.043 C4 C2 C5 110.283
C4 C2 H7 125.440 C4 C3 H8 116.945
C4 C3 H10 112.043 C5 C1 H6 121.572
C5 C2 H7 121.572 H8 C3 H10 108.594
H9 C4 H11 108.594 H12 C5 H13 114.188
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.039     0.004
2 C -0.039     0.004
3 C -0.323     -0.147
4 C -0.323     -0.147
5 C -0.357     -0.466
6 H 0.125     0.065
7 H 0.125     0.065
8 H 0.136     0.070
9 H 0.136     0.070
10 H 0.141     0.069
11 H 0.141     0.069
12 H 0.135     0.169
13 H 0.143     0.173


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.271 -0.053 0.000 0.276
CHELPG        
AIM        
ESP -0.216 -0.062 0.000 0.225


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.806 0.140 0.000
y 0.140 -31.326 0.000
z 0.000 0.000 -32.978
Traceless
 xyz
x 0.346 0.140 0.000
y 0.140 1.066 0.000
z 0.000 0.000 -1.412
Polar
3z2-r2-2.823
x2-y2-0.480
xy0.140
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.503 0.006 -0.057
y 0.006 7.981 -0.008
z -0.057 -0.008 7.452


<r2> (average value of r2) Å2
<r2> 98.950
(<r2>)1/2 9.947