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All results from a given calculation for C5H8 (Bicyclo[1.1.1]pentane)

using model chemistry: CCSD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at CCSD/6-311G**
 hartrees
Energy at 0K-194.735396
Energy at 298.15K 
HF Energy-193.949080
Nuclear repulsion energy179.042349
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 CCSD/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1' 3140 3140 0.00      
2 A1' 3076 3076 0.00      
3 A1' 1579 1579 0.00      
4 A1' 1149 1149 0.00      
5 A1' 930 930 0.00      
6 A1" 1015 1015 0.00      
7 A2' 3133 3133 0.00      
8 A2' 979 979 0.00      
9 A2" 3134 3134 118.80      
10 A2" 1284 1284 34.01      
11 A2" 864 864 5.45      
12 E' 3140 3140 68.66      
12 E' 3140 3140 68.66      
13 E' 3070 3070 73.48      
13 E' 3070 3070 73.48      
14 E' 1531 1531 0.08      
14 E' 1531 1531 0.08      
15 E' 1284 1284 1.66      
15 E' 1284 1284 1.66      
16 E' 1134 1134 0.43      
16 E' 1134 1134 0.43      
17 E' 920 920 0.40      
17 E' 920 920 0.40      
18 E' 553 553 0.18      
18 E' 553 553 0.18      
19 E" 1232 1232 0.00      
19 E" 1232 1232 0.00      
20 E" 1171 1171 0.00      
20 E" 1171 1171 0.00      
21 E" 1041 1041 0.00      
21 E" 1041 1041 0.00      
22 E" 811 811 0.00      
22 E" 811 811 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26026.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26026.4 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 CCSD/6-311G**
ABC
0.23993 0.23993 0.20782

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311G**

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.943
C2 0.000 1.240 0.000
C3 1.074 -0.620 0.000
C4 -1.074 -0.620 0.000
C5 0.000 0.000 -0.943
H6 0.000 0.000 2.036
H7 0.000 0.000 -2.036
H8 0.907 1.854 0.000
H9 -0.907 1.854 0.000
H10 1.152 -1.713 0.000
H11 2.059 -0.141 0.000
H12 -2.059 -0.141 0.000
H13 -1.152 -1.713 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55791.55791.55791.88621.09282.97902.26952.26952.26952.26952.26952.2695
C21.55792.14762.14761.55792.38382.38381.09571.09573.16962.47982.47983.1696
C31.55792.14762.14761.55792.38382.38382.47983.16961.09561.09573.16962.4798
C41.55792.14762.14761.55792.38382.38383.16962.47982.47983.16961.09571.0956
C51.88621.55791.55791.55792.97901.09282.26952.26952.26952.26952.26952.2695
H61.09282.38382.38382.38382.97904.07182.89932.89932.89932.89932.89932.8993
H72.97902.38382.38382.38381.09284.07182.89932.89932.89932.89932.89932.8993
H82.26951.09572.47983.16962.26952.89932.89931.81453.57542.30433.57544.1189
H92.26951.09573.16962.47982.26952.89932.89931.81454.11893.57542.30433.5754
H102.26953.16961.09562.47982.26952.89932.89933.57544.11891.81453.57542.3043
H112.26952.47981.09573.16962.26952.89932.89932.30433.57541.81454.11893.5754
H122.26952.47983.16961.09572.26952.89932.89933.57542.30433.57544.11891.8145
H132.26953.16962.47981.09562.26952.89932.89934.11893.57542.30433.57541.8145

picture of Bicyclo[1.1.1]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 74.513 C1 C2 H8 116.502
C1 C2 H9 116.502 C1 C3 C5 74.513
C1 C3 H10 116.502 C1 C3 H11 116.502
C1 C4 C5 74.513 C1 C4 H12 116.502
C1 C4 H13 116.502 C2 C1 C3 87.149
C2 C1 C4 87.149 C2 C1 H6 127.257
C2 C5 C3 87.149 C2 C5 C4 87.149
C2 C5 H7 127.257 C3 C1 C4 87.149
C3 C1 H6 127.257 C3 C5 C4 87.149
C3 C5 H7 127.257 C4 C1 H6 127.257
C4 C5 H7 127.257 C5 C2 H8 116.502
C5 C2 H9 116.502 C5 C3 H10 116.502
C5 C3 H11 116.502 C5 C4 H12 116.502
C5 C4 H13 116.502 H8 C2 H9 111.799
H10 C3 H11 111.799 H12 C4 H13 111.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability