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

using model chemistry: HF/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/cc-pVDZ
 hartrees
Energy at 0K-193.940593
Energy at 298.15K-193.950063
Nuclear repulsion energy176.515219
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 HF/cc-pVDZ
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' 3350 3042 35.11      
2 A' 3332 3026 4.10      
3 A' 3261 2961 76.39      
4 A' 3248 2950 20.84      
5 A' 3200 2906 72.07      
6 A' 1614 1465 1.16      
7 A' 1598 1451 2.10      
8 A' 1476 1340 0.99      
9 A' 1367 1241 0.84      
10 A' 1300 1181 0.12      
11 A' 1215 1103 0.44      
12 A' 1104 1002 0.27      
13 A' 1047 951 3.96      
14 A' 1025 930 6.75      
15 A' 974 884 0.12      
16 A' 839 762 1.29      
17 A' 835 758 9.90      
18 A' 448 407 0.46      
19 A" 3324 3018 26.90      
20 A" 3239 2941 0.66      
21 A" 3186 2893 63.73      
22 A" 1580 1435 0.11      
23 A" 1427 1296 4.05      
24 A" 1363 1238 0.20      
25 A" 1316 1195 0.05      
26 A" 1218 1106 0.05      
27 A" 1186 1077 1.23      
28 A" 1152 1046 0.85      
29 A" 1056 959 4.21      
30 A" 1009 916 0.01      
31 A" 848 770 18.50      
32 A" 749 680 0.04      
33 A" 288 262 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 27086.4 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 24594.5 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 HF/cc-pVDZ
ABC
0.30763 0.20476 0.16059

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.538 0.759
C2 -0.246 -0.538 -0.759
C3 -0.246 0.991 0.779
C4 -0.246 0.991 -0.779
C5 0.942 -1.040 0.000
H6 -0.793 -1.175 1.442
H7 -0.793 -1.175 -1.442
H8 0.606 1.462 1.276
H9 0.606 1.462 -1.276
H10 -1.164 1.412 1.188
H11 -1.164 1.412 -1.188
H12 1.873 -0.480 0.000
H13 1.072 -2.116 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51831.52912.16891.49641.08222.35572.23452.97812.19802.90522.25092.1914
C21.51832.16891.52911.49642.35571.08222.97812.23452.90522.19802.25092.1914
C31.52912.16891.55832.47882.33003.15001.09272.27421.09002.21182.69393.4635
C42.16891.52911.55832.47883.15002.33002.27421.09272.21181.09002.69393.4635
C51.49641.49642.47882.47882.25992.25992.82952.82953.44433.44431.08651.0833
H61.08222.35572.33003.15002.25992.88372.98954.03712.62583.70793.10922.5383
H72.35571.08223.15002.33002.25992.88374.03712.98953.70792.62583.10922.5383
H82.23452.97811.09272.27422.82952.98954.03712.55281.77233.03462.64683.8276
H92.97812.23452.27421.09272.82954.03712.98952.55283.03461.77232.64683.8276
H102.19802.90521.09002.21183.44432.62583.70791.77233.03462.37683.76994.3428
H112.90522.19802.21181.09003.44433.70792.62583.03461.77232.37683.76994.3428
H122.25092.25092.69392.69391.08653.10923.10922.64682.64683.76993.76991.8217
H132.19142.19143.46353.46351.08332.53832.53833.82763.82764.34284.34281.8217

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 90.748 C1 C2 C5 59.515
C1 C2 H7 129.113 C1 C3 C4 89.252
C1 C3 H8 115.923 C1 C3 H10 113.046
C1 C5 C2 60.971 C1 C5 H12 120.428
C1 C5 H13 115.371 C2 C1 C3 90.748
C2 C1 C5 59.515 C2 C1 H6 129.113
C2 C4 C3 89.252 C2 C4 H9 115.923
C2 C4 H11 113.046 C2 C5 H12 120.428
C2 C5 H13 115.371 C3 C1 C5 110.022
C3 C1 H6 125.453 C3 C4 H9 117.069
C3 C4 H11 112.054 C4 C2 C5 110.022
C4 C2 H7 125.453 C4 C3 H8 117.069
C4 C3 H10 112.054 C5 C1 H6 121.599
C5 C2 H7 121.599 H8 C3 H10 108.581
H9 C4 H11 108.581 H12 C5 H13 114.190
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.144 -0.021    
2 C -0.144 -0.021    
3 C 0.024 -0.005    
4 C 0.024 -0.364    
5 C 0.027 -0.005    
6 H 0.010 0.049    
7 H 0.010 0.049    
8 H 0.026 0.011    
9 H 0.026 0.013    
10 H 0.034 0.141    
11 H 0.034 0.126    
12 H 0.030 0.013    
13 H 0.042 0.011    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.253 -0.078 0.000 0.265
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.675 0.198 0.000
y 0.198 -31.232 0.000
z 0.000 0.000 -32.773
Traceless
 xyz
x 0.328 0.198 0.000
y 0.198 0.992 0.000
z 0.000 0.000 -1.320
Polar
3z2-r2-2.639
x2-y2-0.443
xy0.198
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.862 -0.414 0.000
y -0.414 7.535 0.000
z 0.000 0.000 7.115


<r2> (average value of r2) Å2
<r2> 97.976
(<r2>)1/2 9.898