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

using model chemistry: HF/TZVP

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/TZVP
 hartrees
Energy at 0K-193.985158
Energy at 298.15K-193.994648
HF Energy-193.985158
Nuclear repulsion energy177.094595
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/TZVP
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' 3337 3032 41.49      
2 A' 3322 3019 1.12      
3 A' 3247 2950 87.97      
4 A' 3241 2944 16.67      
5 A' 3191 2899 74.42      
6 A' 1636 1486 0.96      
7 A' 1617 1469 2.06      
8 A' 1479 1344 1.36      
9 A' 1370 1245 1.13      
10 A' 1309 1190 0.12      
11 A' 1220 1108 0.49      
12 A' 1109 1008 0.02      
13 A' 1044 949 4.61      
14 A' 1025 931 5.95      
15 A' 970 882 0.34      
16 A' 844 767 2.21      
17 A' 838 761 10.90      
18 A' 451 410 0.42      
19 A" 3318 3015 29.13      
20 A" 3225 2930 1.29      
21 A" 3178 2888 66.31      
22 A" 1606 1459 0.13      
23 A" 1433 1302 5.60      
24 A" 1379 1253 0.41      
25 A" 1327 1206 0.04      
26 A" 1229 1117 0.11      
27 A" 1201 1091 1.37      
28 A" 1163 1056 1.06      
29 A" 1058 961 5.43      
30 A" 1015 922 0.03      
31 A" 846 768 20.10      
32 A" 751 682 0.04      
33 A" 291 264 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 27133.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 24653.9 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/TZVP
ABC
0.30919 0.20603 0.16154

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 -0.538 0.757
C2 -0.245 -0.538 -0.757
C3 -0.245 0.989 0.779
C4 -0.245 0.989 -0.779
C5 0.941 -1.035 0.000
H6 -0.789 -1.171 1.433
H7 -0.789 -1.171 -1.433
H8 0.601 1.455 1.272
H9 0.601 1.455 -1.272
H10 -1.157 1.407 1.185
H11 -1.157 1.407 -1.185
H12 1.861 -0.474 0.000
H13 1.076 -2.102 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51341.52702.16551.49231.07382.34302.22582.96702.19062.89572.23962.1827
C21.51342.16551.52701.49232.34301.07382.96702.22582.89572.19062.23962.1827
C31.52702.16551.55782.47192.32103.13861.08482.26671.08222.20522.68053.4505
C42.16551.52701.55782.47193.13862.32102.26671.08482.20521.08222.68053.4505
C51.49231.49232.47192.47192.25042.25042.81662.81663.43083.43081.07831.0755
H61.07382.34302.32103.13862.25042.86552.97564.01762.61593.69243.09272.5294
H72.34301.07383.13862.32102.25042.86554.01762.97563.69242.61593.09272.5294
H82.22582.96701.08482.26672.81662.97564.01762.54301.76103.02122.63173.8074
H92.96702.22582.26671.08482.81664.01762.97562.54303.02121.76102.63173.8074
H102.19062.89571.08222.20523.43082.61593.69241.76103.02122.37003.74894.3249
H112.89572.19062.20521.08223.43083.69242.61593.02121.76102.37003.74894.3249
H122.23962.23962.68052.68051.07833.09273.09272.63172.63173.74893.74891.8081
H132.18272.18273.45053.45051.07552.52942.52943.80743.80744.32494.32491.8081

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 90.833 C1 C2 C5 59.532
C1 C2 H7 129.019 C1 C3 C4 89.167
C1 C3 H8 115.875 C1 C3 H10 113.080
C1 C5 C2 60.935 C1 C5 H12 120.355
C1 C5 H13 115.468 C2 C1 C3 90.833
C2 C1 C5 59.532 C2 C1 H6 129.019
C2 C4 C3 89.167 C2 C4 H9 115.875
C2 C4 H11 113.080 C2 C5 H12 120.355
C2 C5 H13 115.468 C3 C1 C5 109.902
C3 C1 H6 125.451 C3 C4 H9 117.009
C3 C4 H11 112.040 C4 C2 C5 109.902
C4 C2 H7 125.451 C4 C3 H8 117.009
C4 C3 H10 112.040 C5 C1 H6 121.705
C5 C2 H7 121.705 H8 C3 H10 108.714
H9 C4 H11 108.714 H12 C5 H13 114.177
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.010      
2 C -0.010      
3 C -0.235      
4 C -0.235      
5 C -0.334      
6 H 0.141      
7 H 0.141      
8 H 0.079      
9 H 0.079      
10 H 0.092      
11 H 0.092      
12 H 0.089      
13 H 0.112      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.244 -0.040 0.000 0.247
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.603 0.169 0.000
y 0.169 -31.108 0.000
z 0.000 0.000 -32.615
Traceless
 xyz
x 0.259 0.169 0.000
y 0.169 1.001 0.000
z 0.000 0.000 -1.260
Polar
3z2-r2-2.520
x2-y2-0.495
xy0.169
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.218 -0.371 0.000
y -0.371 7.778 0.000
z 0.000 0.000 7.459


<r2> (average value of r2) Å2
<r2> 97.386
(<r2>)1/2 9.868