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All results from a given calculation for C5H6 (Bicyclo[2.1.0]pent-2-ene)

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-193.669322
Energy at 298.15K-193.675634
HF Energy-192.775685
Nuclear repulsion energy161.271880
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 MP2=FULL/cc-pVTZ
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' 3278 3112 2.56      
2 A' 3262 3097 27.40      
3 A' 3251 3086 3.60      
4 A' 3162 3002 21.08      
5 A' 1573 1493 4.95      
6 A' 1492 1417 2.82      
7 A' 1313 1247 1.22      
8 A' 1220 1158 1.11      
9 A' 1128 1071 1.75      
10 A' 1053 1000 2.15      
11 A' 981 932 3.98      
12 A' 877 833 1.92      
13 A' 825 783 0.23      
14 A' 751 713 66.40      
15 A' 426 405 7.27      
16 A" 3266 3101 6.65      
17 A" 3228 3065 5.82      
18 A" 1330 1263 20.98      
19 A" 1240 1177 0.06      
20 A" 1098 1042 4.54      
21 A" 1055 1002 2.56      
22 A" 1047 994 5.39      
23 A" 969 920 1.51      
24 A" 896 851 9.52      
25 A" 831 789 7.08      
26 A" 801 760 25.98      
27 A" 455 432 1.09      

Unscaled Zero Point Vibrational Energy (zpe) 20402.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 19370.3 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 MP2=FULL/cc-pVTZ
ABC
0.36493 0.22147 0.17722

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.264 1.044 0.671
C2 -0.264 1.044 -0.671
C3 -0.264 -0.465 0.760
C4 -0.264 -0.465 -0.760
C5 0.924 -0.989 0.000
H6 -0.197 1.795 1.438
H7 -0.197 1.795 -1.438
H8 -0.860 -1.052 1.432
H9 -0.860 -1.052 -1.432
H10 1.851 -0.432 0.000
H11 1.053 -2.062 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.34161.51172.07972.44781.07532.23912.30843.02852.66483.4392
C21.34162.07971.51172.44782.23911.07533.02852.30842.66483.4392
C31.51172.07971.52071.50452.36013.15311.07332.34702.24792.2049
C42.07971.51171.52071.50453.15312.36012.34701.07332.24792.2049
C52.44782.44781.50451.50453.32693.32692.28922.28921.08121.0808
H61.07532.23912.36013.15313.32692.87512.92314.09653.34924.3010
H72.23911.07533.15312.36013.32692.87514.09652.92313.34924.3010
H82.30843.02851.07332.34702.28922.92314.09652.86483.12882.5949
H93.02852.30842.34701.07332.28924.09652.92312.86483.12882.5949
H102.66482.66482.24792.24791.08123.34923.34923.12883.12881.8144
H113.43923.43922.20492.20491.08084.30104.30102.59492.59491.8144

picture of Bicyclo[2.1.0]pent-2-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 93.396 C1 C2 H7 135.487
C1 C3 C4 86.604 C1 C3 C5 108.493
C1 C3 H8 125.660 C2 C1 C3 93.396
C2 C1 H6 135.487 C2 C4 C3 86.604
C2 C4 C5 108.493 C2 C4 H9 125.660
C3 C1 H6 130.905 C3 C4 C5 59.644
C3 C4 H9 128.768 C3 C5 C4 60.713
C3 C5 H10 119.871 C3 C5 H11 116.084
C4 C2 H7 130.905 C4 C3 C5 59.644
C4 C3 H8 128.768 C4 C5 H10 119.871
C4 C5 H11 116.084 C5 C3 H8 124.416
C5 C4 H9 124.416 H10 C5 H11 114.114
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability