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

using model chemistry: HF/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-193.946913
Energy at 298.15K-193.956379
Nuclear repulsion energy176.480483
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/aug-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' 3343 3044 41.59      
2 A' 3327 3030 2.51      
3 A' 3252 2961 84.42      
4 A' 3242 2952 23.13      
5 A' 3191 2906 81.08      
6 A' 1620 1475 1.01      
7 A' 1604 1461 1.91      
8 A' 1473 1342 1.35      
9 A' 1360 1238 1.02      
10 A' 1298 1182 0.03      
11 A' 1212 1104 0.45      
12 A' 1100 1002 0.10      
13 A' 1045 951 4.19      
14 A' 1018 927 6.40      
15 A' 969 883 0.09      
16 A' 837 762 0.60      
17 A' 831 757 11.18      
18 A' 446 406 0.32      
19 A" 3320 3023 31.30      
20 A" 3230 2942 1.37      
21 A" 3178 2894 67.41      
22 A" 1588 1446 0.20      
23 A" 1424 1296 4.87      
24 A" 1360 1238 0.54      
25 A" 1316 1198 0.01      
26 A" 1214 1105 0.04      
27 A" 1179 1074 1.35      
28 A" 1146 1044 0.91      
29 A" 1052 958 4.63      
30 A" 1004 915 0.01      
31 A" 844 768 18.56      
32 A" 744 677 0.02      
33 A" 286 261 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 27025.8 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 24609.7 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 HF/aug-cc-pVDZ
ABC
0.30743 0.20462 0.16044

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.538 0.760
C2 -0.246 -0.538 -0.760
C3 -0.246 0.992 0.780
C4 -0.246 0.992 -0.780
C5 0.943 -1.041 0.000
H6 -0.792 -1.174 1.441
H7 -0.792 -1.174 -1.441
H8 0.605 1.461 1.276
H9 0.605 1.461 -1.276
H10 -1.164 1.412 1.186
H11 -1.164 1.412 -1.186
H12 1.871 -0.481 0.000
H13 1.072 -2.115 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51971.53012.17061.49781.08022.35542.23342.97762.19682.90362.25022.1911
C21.51972.17061.53011.49782.35541.08022.97762.23342.90362.19682.25022.1911
C31.53012.17061.55982.48072.32943.14991.09092.27391.08812.21002.69433.4637
C42.17061.53011.55982.48073.14992.32942.27391.09092.21001.08812.69433.4637
C51.49781.49782.48072.48072.25952.25952.82932.82933.44393.44391.08451.0815
H61.08022.35542.32943.14992.25952.88262.98724.03472.62443.70483.10682.5376
H72.35541.08023.14992.32942.25952.88264.03472.98723.70482.62443.10682.5376
H82.23342.97761.09092.27392.82932.98724.03472.55191.77163.03192.64663.8257
H92.97762.23342.27391.09092.82934.03472.98722.55193.03191.77162.64663.8257
H102.19682.90361.08812.21003.44392.62443.70481.77163.03192.37233.76834.3408
H112.90362.19682.21001.08813.44393.70482.62443.03191.77162.37233.76834.3408
H122.25022.25022.69432.69431.08453.10683.10682.64662.64663.76833.76831.8190
H132.19112.19113.46373.46371.08152.53762.53763.82573.82574.34084.34081.8190

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 90.750 C1 C2 C5 59.514
C1 C2 H7 129.110 C1 C3 C4 89.250
C1 C3 H8 115.872 C1 C3 H10 112.991
C1 C5 C2 60.972 C1 C5 H12 120.397
C1 C5 H13 115.365 C2 C1 C3 90.750
C2 C1 C5 59.514 C2 C1 H6 129.110
C2 C4 C3 89.250 C2 C4 H9 115.872
C2 C4 H11 112.991 C2 C5 H12 120.397
C2 C5 H13 115.365 C3 C1 C5 110.024
C3 C1 H6 125.460 C3 C4 H9 117.047
C3 C4 H11 111.923 C4 C2 C5 110.024
C4 C2 H7 125.460 C4 C3 H8 117.047
C4 C3 H10 111.923 C5 C1 H6 121.590
C5 C2 H7 121.590 H8 C3 H10 108.785
H9 C4 H11 108.785 H12 C5 H13 114.234
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.302      
2 C 0.302      
3 C 0.512      
4 C 0.512      
5 C 0.853      
6 H -0.445      
7 H -0.445      
8 H -0.216      
9 H -0.216      
10 H -0.194      
11 H -0.194      
12 H -0.406      
13 H -0.366      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.244 -0.066 0.000 0.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.724 0.194 0.000
y 0.194 -31.338 0.000
z 0.000 0.000 -32.782
Traceless
 xyz
x 0.336 0.194 0.000
y 0.194 0.915 0.000
z 0.000 0.000 -1.252
Polar
3z2-r2-2.503
x2-y2-0.386
xy0.194
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> 98.037
(<r2>)1/2 9.901