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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-193.997157
Energy at 298.15K-194.006634
HF Energy-193.997157
Nuclear repulsion energy177.243294
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3336 3023 41.16      
2 A' 3320 3009 1.31      
3 A' 3241 2938 95.86      
4 A' 3238 2935 7.65      
5 A' 3186 2888 77.87      
6 A' 1634 1481 0.94      
7 A' 1616 1465 1.84      
8 A' 1480 1341 1.33      
9 A' 1368 1240 1.28      
10 A' 1309 1186 0.09      
11 A' 1219 1105 0.49      
12 A' 1110 1006 0.07      
13 A' 1045 947 4.35      
14 A' 1025 929 5.96      
15 A' 972 881 0.25      
16 A' 844 765 1.20      
17 A' 838 760 10.62      
18 A' 449 407 0.34      
19 A" 3316 3006 30.04      
20 A" 3219 2918 2.02      
21 A" 3173 2876 64.95      
22 A" 1604 1454 0.18      
23 A" 1432 1298 5.18      
24 A" 1381 1252 0.44      
25 A" 1327 1203 0.01      
26 A" 1227 1113 0.12      
27 A" 1201 1088 1.40      
28 A" 1162 1053 1.18      
29 A" 1059 960 4.77      
30 A" 1013 918 0.00      
31 A" 846 767 18.58      
32 A" 748 678 0.02      
33 A" 290 263 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 27114.6 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 24576.7 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/Def2TZVPP
ABC
0.31002 0.20628 0.16165

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 -0.537 0.756
C2 -0.245 -0.537 -0.756
C3 -0.245 0.988 0.778
C4 -0.245 0.988 -0.778
C5 0.939 -1.037 0.000
H6 -0.787 -1.168 1.433
H7 -0.787 -1.168 -1.433
H8 0.600 1.455 1.270
H9 0.600 1.455 -1.270
H10 -1.155 1.407 1.183
H11 -1.155 1.407 -1.183
H12 1.860 -0.480 0.000
H13 1.070 -2.103 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51281.52552.16361.49101.07232.34232.22372.96462.18892.89312.23742.1807
C21.51282.16361.52551.49102.34231.07232.96462.22372.89312.18892.23742.1807
C31.52552.16361.55592.47172.31803.13581.08352.26441.08092.20202.68173.4487
C42.16361.52551.55592.47173.13582.31802.26441.08352.20201.08092.68173.4487
C51.49101.49102.47172.47172.24672.24672.81752.81753.42933.42931.07691.0741
H61.07232.34232.31803.13582.24672.86662.97134.01402.61393.68963.08742.5252
H72.34231.07233.13582.31802.24672.86664.01402.97133.68962.61393.08742.5252
H82.22372.96461.08352.26442.81752.97134.01402.54081.75833.01702.63513.8071
H92.96462.22372.26441.08352.81754.01402.97132.54083.01701.75832.63513.8071
H102.18892.89311.08092.20203.42932.61393.68961.75833.01702.36563.74884.3217
H112.89312.18892.20201.08093.42933.68962.61393.01701.75832.36563.74884.3217
H122.23742.23742.68172.68171.07693.08743.08742.63512.63513.74883.74881.8052
H132.18072.18073.44873.44871.07412.52522.52523.80713.80714.32174.32171.8052

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 90.809 C1 C2 C5 59.515
C1 C2 H7 129.140 C1 C3 C4 89.191
C1 C3 H8 115.895 C1 C3 H10 113.138
C1 C5 C2 60.970 C1 C5 H12 120.362
C1 C5 H13 115.493 C2 C1 C3 90.809
C2 C1 C5 59.515 C2 C1 H6 129.140
C2 C4 C3 89.191 C2 C4 H9 115.895
C2 C4 H11 113.138 C2 C5 H12 120.362
C2 C5 H13 115.493 C3 C1 C5 110.041
C3 C1 H6 125.423 C3 C4 H9 117.030
C3 C4 H11 111.994 C4 C2 C5 110.041
C4 C2 H7 125.423 C4 C3 H8 117.030
C4 C3 H10 111.994 C5 C1 H6 121.578
C5 C2 H7 121.578 H8 C3 H10 108.654
H9 C4 H11 108.654 H12 C5 H13 114.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.053      
2 C -0.053      
3 C -0.079      
4 C -0.079      
5 C -0.125      
6 H 0.061      
7 H 0.061      
8 H 0.040      
9 H 0.040      
10 H 0.047      
11 H 0.047      
12 H 0.040      
13 H 0.052      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.237 -0.061 0.000 0.245
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.583 0.189 0.000
y 0.189 -31.191 0.000
z 0.000 0.000 -32.614
Traceless
 xyz
x 0.319 0.189 0.000
y 0.189 0.907 0.000
z 0.000 0.000 -1.227
Polar
3z2-r2-2.454
x2-y2-0.392
xy0.189
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.304 -0.417 0.000
y -0.417 7.975 0.000
z 0.000 0.000 7.655


<r2> (average value of r2) Å2
<r2> 97.296
(<r2>)1/2 9.864