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

using model chemistry: B3PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-195.281655
Energy at 298.15K-195.290841
Nuclear repulsion energy176.613711
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 B3PW91/cc-pVTZ
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' 3201 3079 22.69      
2 A' 3183 3061 7.06      
3 A' 3117 2997 45.01      
4 A' 3101 2982 23.14      
5 A' 3052 2934 64.23      
6 A' 1502 1444 1.49      
7 A' 1480 1423 2.94      
8 A' 1371 1318 0.59      
9 A' 1244 1196 1.94      
10 A' 1215 1168 0.05      
11 A' 1134 1090 0.58      
12 A' 1034 994 0.23      
13 A' 990 952 3.00      
14 A' 949 913 7.27      
15 A' 912 877 0.61      
16 A' 785 755 2.72      
17 A' 782 752 6.71      
18 A' 414 398 0.56      
19 A" 3175 3053 23.87      
20 A" 3099 2980 1.12      
21 A" 3043 2926 50.11      
22 A" 1475 1418 0.68      
23 A" 1308 1257 6.48      
24 A" 1261 1213 1.19      
25 A" 1223 1176 0.02      
26 A" 1124 1080 0.07      
27 A" 1080 1038 2.69      
28 A" 1056 1016 1.04      
29 A" 999 961 4.40      
30 A" 935 899 0.13      
31 A" 807 776 15.39      
32 A" 684 658 0.10      
33 A" 267 257 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 25499.9 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 24520.7 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 B3PW91/cc-pVTZ
ABC
0.30783 0.20533 0.16068

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.244 -0.536 0.762
C2 -0.244 -0.536 -0.762
C3 -0.244 0.990 0.778
C4 -0.244 0.990 -0.778
C5 0.938 -1.042 0.000
H6 -0.794 -1.174 1.442
H7 -0.794 -1.174 -1.442
H8 0.606 1.461 1.277
H9 0.606 1.461 -1.277
H10 -1.162 1.414 1.184
H11 -1.162 1.414 -1.184
H12 1.869 -0.481 0.000
H13 1.064 -2.118 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52481.52572.16821.49521.08192.35962.23082.97812.19572.90372.24692.1896
C21.52482.16821.52571.49522.35961.08192.97812.23082.90372.19572.24692.1896
C31.52572.16821.55662.47622.32863.14821.09282.27341.08952.20742.68963.4601
C42.16821.52571.55662.47623.14822.32862.27341.09282.20741.08952.68963.4601
C51.49521.49522.47622.47622.25762.25762.82942.82943.44153.44151.08641.0830
H61.08192.35962.32863.14822.25762.88372.98854.03652.62603.70463.10622.5342
H72.35961.08193.14822.32862.25762.88374.03652.98853.70462.62603.10622.5342
H82.23082.97811.09282.27342.82942.98854.03652.55301.77183.03052.64493.8271
H92.97812.23082.27341.09282.82944.03652.98852.55303.03051.77182.64493.8271
H102.19572.90371.08952.20743.44152.62603.70461.77183.03052.36763.76554.3391
H112.90372.19572.20741.08953.44153.70462.62603.03051.77182.36763.76554.3391
H122.24692.24692.68962.68961.08643.10623.10622.64492.64493.76553.76551.8236
H132.18962.18963.46013.46011.08302.53422.53423.82713.82714.33914.33911.8236

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 90.597 C1 C2 C5 59.342
C1 C2 H7 128.903 C1 C3 C4 89.403
C1 C3 H8 115.861 C1 C3 H10 113.141
C1 C5 C2 61.317 C1 C5 H12 120.171
C1 C5 H13 115.342 C2 C1 C3 90.597
C2 C1 C5 59.342 C2 C1 H6 128.903
C2 C4 C3 89.403 C2 C4 H9 115.861
C2 C4 H11 113.141 C2 C5 H12 120.171
C2 C5 H13 115.342 C3 C1 C5 110.109
C3 C1 H6 125.650 C3 C4 H9 117.123
C3 C4 H11 111.851 C4 C2 C5 110.109
C4 C2 H7 125.650 C4 C3 H8 117.123
C4 C3 H10 111.851 C5 C1 H6 121.504
C5 C2 H7 121.504 H8 C3 H10 108.565
H9 C4 H11 108.565 H12 C5 H13 114.411
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.093 0.000    
2 C -0.093 0.000    
3 C -0.148 0.000    
4 C -0.148 0.000    
5 C -0.223 0.000    
6 H 0.101 0.000    
7 H 0.101 0.000    
8 H 0.077 0.000    
9 H 0.077 0.000    
10 H 0.081 0.000    
11 H 0.081 0.000    
12 H 0.091 0.000    
13 H 0.097 0.000    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.247 -0.077 0.000 0.259
CHELPG 0.000 0.000 0.000 0.000
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.236 0.168 0.000
y 0.168 -30.821 0.000
z 0.000 0.000 -32.354
Traceless
 xyz
x 0.351 0.168 0.000
y 0.168 0.975 0.000
z 0.000 0.000 -1.325
Polar
3z2-r2-2.651
x2-y2-0.416
xy0.168
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> 97.607
(<r2>)1/2 9.880