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

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-194.673437
Energy at 298.15K-194.682669
HF Energy-193.942324
Nuclear repulsion energy176.576070
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/6-31+G**
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' 3300 3099 16.31      
2 A' 3274 3075 8.74      
3 A' 3213 3018 42.54      
4 A' 3188 2994 18.55      
5 A' 3134 2943 58.21      
6 A' 1553 1458 1.04      
7 A' 1532 1439 2.15      
8 A' 1406 1321 0.90      
9 A' 1283 1205 1.53      
10 A' 1242 1166 0.13      
11 A' 1159 1088 0.92      
12 A' 1059 994 0.15      
13 A' 1010 949 4.42      
14 A' 970 911 6.81      
15 A' 932 875 1.13      
16 A' 808 759 0.37      
17 A' 802 753 11.61      
18 A' 422 397 0.46      
19 A" 3264 3066 18.26      
20 A" 3196 3002 0.19      
21 A" 3126 2936 46.98      
22 A" 1522 1429 0.27      
23 A" 1342 1260 6.82      
24 A" 1291 1213 2.01      
25 A" 1246 1170 0.00      
26 A" 1150 1080 0.19      
27 A" 1107 1040 4.51      
28 A" 1086 1020 0.57      
29 A" 1025 963 5.84      
30 A" 958 899 0.44      
31 A" 824 774 17.60      
32 A" 685 644 0.15      
33 A" 258 243 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 26182.2 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 24590.4 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 MP2=FULL/6-31+G**
ABC
0.30634 0.20575 0.16103

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.247 -0.538 0.764
C2 -0.247 -0.538 -0.764
C3 -0.247 0.987 0.779
C4 -0.247 0.987 -0.779
C5 0.945 -1.033 0.000
H6 -0.789 -1.181 1.442
H7 -0.789 -1.181 -1.442
H8 0.606 1.455 1.275
H9 0.606 1.455 -1.275
H10 -1.164 1.410 1.185
H11 -1.164 1.410 -1.185
H12 1.862 -0.454 0.000
H13 1.086 -2.105 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52821.52602.17041.49901.08052.36112.22712.97602.19392.90432.24432.1937
C21.52822.17041.52601.49902.36111.08052.97602.22712.90432.19392.24432.1937
C31.52602.17041.55882.47122.33193.15171.09132.27271.08812.20862.67023.4560
C42.17041.52601.55882.47123.15172.33192.27271.09132.20861.08812.67023.4560
C51.49901.49902.47122.47122.26012.26012.81522.81523.43713.43711.08471.0813
H61.08052.36112.33193.15172.26012.88402.98734.03452.63063.70873.10452.5393
H72.36111.08053.15172.33192.26012.88404.03452.98733.70872.63063.10452.5393
H82.22712.97601.09132.27272.81522.98734.03452.54961.77303.03082.61603.8109
H92.97602.22712.27271.09132.81524.03452.98732.54963.03081.77302.61603.8109
H102.19392.90431.08812.20863.43712.63063.70871.77303.03082.36973.74584.3376
H112.90432.19392.20861.08813.43713.70872.63063.03081.77302.36973.74584.3376
H122.24432.24432.67022.67021.08473.10453.10452.61602.61603.74583.74581.8241
H132.19372.19373.45603.45601.08132.53932.53933.81093.81094.33764.33761.8241

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 90.575 C1 C2 C5 59.352
C1 C2 H7 128.855 C1 C3 C4 89.425
C1 C3 H8 115.629 C1 C3 H10 113.058
C1 C5 C2 61.295 C1 C5 H12 119.742
C1 C5 H13 115.512 C2 C1 C3 90.575
C2 C1 C5 59.352 C2 C1 H6 128.855
C2 C4 C3 89.425 C2 C4 H9 115.629
C2 C4 H11 113.058 C2 C5 H12 119.742
C2 C5 H13 115.512 C3 C1 C5 109.558
C3 C1 H6 126.072 C3 C4 H9 116.997
C3 C4 H11 111.876 C4 C2 C5 109.558
C4 C2 H7 126.072 C4 C3 H8 116.997
C4 C3 H10 111.876 C5 C1 H6 121.516
C5 C2 H7 121.516 H8 C3 H10 108.881
H9 C4 H11 108.881 H12 C5 H13 114.744
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability