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

using model chemistry: MP4/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at MP4/TZVP
 hartrees
Energy at 0K-194.774454
Energy at 298.15K 
HF Energy-193.962678
Nuclear repulsion energy179.117576
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 MP4/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 A1' 3128 3012        
2 A1' 3064 2950        
3 A1' 1567 1509        
4 A1' 1132 1090        
5 A1' 918 884        
6 A1" 990 953        
7 A2' 3129 3013        
8 A2' 971 935        
9 A2" 3123 3007        
10 A2" 1251 1205        
11 A2" 837 806        
12 E' 3134 3018        
12 E' 3134 3018        
13 E' 3059 2946        
13 E' 3059 2946        
14 E' 1518 1462        
14 E' 1517 1461        
15 E' 1240 1194        
15 E' 1240 1194        
16 E' 1119 1077        
16 E' 1118 1077        
17 E' 893 860        
17 E' 893 860        
18 E' 549 528        
18 E' 548 528        
19 E" 1210 1165        
19 E" 1209 1165        
20 E" 1130 1088        
20 E" 1130 1088        
21 E" 1007 969        
21 E" 1006 969        
22 E" 787 757        
22 E" 786 757        

Unscaled Zero Point Vibrational Energy (zpe) 25697.2 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 24743.8 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 MP4/TZVP
ABC
0.24009 0.24009 0.20789

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

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 2.034
H7 0.000 0.000 -2.034
H8 0.907 1.852 0.000
H9 -0.907 1.852 0.000
H10 1.150 -1.711 0.000
H11 2.057 -0.140 0.000
H12 -2.057 -0.140 0.000
H13 -1.150 -1.711 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55791.55791.55791.88551.09122.97672.26722.26722.26722.26722.26722.2672
C21.55792.14832.14831.55792.38232.38231.09381.09383.16782.47752.47753.1678
C31.55792.14832.14831.55792.38232.38232.47753.16781.09381.09383.16782.4775
C41.55792.14832.14831.55792.38232.38233.16782.47752.47753.16781.09381.0938
C51.88551.55791.55791.55792.97671.09122.26722.26722.26722.26722.26722.2672
H61.09122.38232.38232.38232.97674.06792.89622.89622.89622.89622.89622.8962
H72.97672.38232.38232.38231.09124.06792.89622.89622.89622.89622.89622.8962
H82.26721.09382.47753.16782.26722.89622.89621.81393.57132.30033.57134.1142
H92.26721.09383.16782.47752.26722.89622.89621.81394.11423.57132.30033.5713
H102.26723.16781.09382.47752.26722.89622.89623.57134.11421.81393.57132.3003
H112.26722.47751.09383.16782.26722.89622.89622.30033.57131.81394.11423.5713
H122.26722.47753.16781.09382.26722.89622.89623.57132.30033.57134.11421.8139
H132.26723.16782.47751.09382.26722.89622.89624.11423.57132.30033.57131.8139

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 74.476 C1 C2 H8 116.425
C1 C2 H9 116.425 C1 C3 C5 74.476
C1 C3 H10 116.425 C1 C3 H11 116.425
C1 C4 C5 74.476 C1 C4 H12 116.425
C1 C4 H13 116.425 C2 C1 C3 87.176
C2 C1 C4 87.176 C2 C1 H6 127.238
C2 C5 C3 87.176 C2 C5 C4 87.176
C2 C5 H7 127.238 C3 C1 C4 87.176
C3 C1 H6 127.238 C3 C5 C4 87.176
C3 C5 H7 127.238 C4 C1 H6 127.238
C4 C5 H7 127.238 C5 C2 H8 116.425
C5 C2 H9 116.425 C5 C3 H10 116.425
C5 C3 H11 116.425 C5 C4 H12 116.425
C5 C4 H13 116.425 H8 C2 H9 112.027
H10 C3 H11 112.027 H12 C4 H13 112.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability