return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H10 (Cyclopropane, 1,1-dimethyl-)

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-195.869861
Energy at 298.15K-195.880779
HF Energy-195.148727
Nuclear repulsion energy185.022918
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 MP2/6-31G**
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 3225 3020 12.28      
2 A 3212 3008 32.23      
3 A 3111 2913 29.36      
4 A 1580 1480 0.00      
5 A 1562 1463 4.12      
6 A 1473 1379 0.25      
7 A 1411 1321 0.76      
8 A 1128 1057 1.08      
9 A 1089 1019 8.14      
10 A 989 926 11.00      
11 A 712 667 1.30      
12 A 357 334 0.02      
13 A 3312 3102 0.00      
14 A 3197 2994 0.00      
15 A 1540 1442 0.00      
16 A 1226 1148 0.00      
17 A 1100 1030 0.00      
18 A 928 869 0.00      
19 A 340 318 0.00      
20 A 233 218 0.00      
21 A 3219 3015 15.84      
22 A 3199 2996 52.51      
23 A 1559 1460 4.62      
24 A 1522 1426 2.06      
25 A 1204 1128 3.89      
26 A 1104 1034 0.90      
27 A 898 841 5.65      
28 A 400 375 0.91      
29 A 260 243 0.01      
30 A 3324 3113 19.08      
31 A 3210 3006 13.57      
32 A 3108 2911 29.96      
33 A 1555 1456 3.98      
34 A 1462 1369 5.03      
35 A 1370 1283 0.46      
36 A 1002 938 0.52      
37 A 988 926 0.35      
38 A 813 761 0.17      
39 A 364 341 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 31142.4 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 29164.9 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 MP2/6-31G**
ABC
0.20641 0.17453 0.12787

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.151
C2 0.755 0.000 -1.149
C3 -0.755 0.000 -1.149
C4 0.000 1.271 0.966
C5 0.000 -1.271 0.966
H6 1.260 0.909 -1.444
H7 1.260 -0.909 -1.444
H8 -1.260 -0.909 -1.444
H9 -1.260 0.909 -1.444
H10 -0.883 1.322 1.606
H11 -0.883 -1.322 1.606
H12 0.883 -1.322 1.606
H13 0.883 1.322 1.606
H14 0.000 2.149 0.320
H15 0.000 -2.149 0.320

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15
C11.50361.50361.50991.50992.22702.22702.22702.22702.15522.15522.15522.15522.15572.1557
C21.50361.50922.58092.58091.08151.08152.23022.23023.46733.46733.05893.05892.71072.7107
C31.50361.50922.58092.58092.23022.23021.08151.08153.05893.05893.46733.46732.71072.7107
C41.50992.58092.58092.54192.74383.48603.48602.74381.09162.81322.81321.09161.09013.4805
C51.50992.58092.58092.54193.48602.74382.74383.48602.81321.09161.09162.81323.48051.0901
H62.22701.08152.23022.74383.48601.81903.10852.52073.75044.34473.79803.10062.49753.7491
H72.22701.08152.23023.48602.74381.81902.52073.10854.34473.75043.10063.79803.74912.4975
H82.22702.23021.08153.48602.74383.10852.52071.81903.79803.10063.75044.34473.74912.4975
H92.22702.23021.08152.74383.48602.52073.10851.81903.10063.79804.34473.75042.49753.7491
H102.15523.46733.05891.09162.81323.75044.34473.79803.10062.64473.18031.76621.76513.8057
H112.15523.46733.05892.81321.09164.34473.75043.10063.79802.64471.76623.18033.80571.7651
H122.15523.05893.46732.81321.09163.79803.10063.75044.34473.18031.76622.64473.80571.7651
H132.15523.05893.46731.09162.81323.10063.79804.34473.75041.76623.18032.64471.76513.8057
H142.15572.71072.71071.09013.48052.49753.74913.74912.49751.76513.80573.80571.76514.2981
H152.15572.71072.71073.48051.09013.74912.49752.49753.74913.80571.76511.76513.80574.2981

picture of Cyclopropane, 1,1-dimethyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 59.877 C1 C2 H6 118.047
C1 C2 H7 118.047 C1 C3 C2 59.877
C1 C3 H8 118.047 C1 C3 H9 118.047
C1 C4 H10 110.854 C1 C4 H13 110.854
C1 C4 H14 110.983 C1 C5 H11 110.854
C1 C5 H12 110.854 C1 C5 H15 110.983
C2 C1 C3 60.246 C2 C1 C4 117.840
C2 C1 C5 117.840 C2 C3 H8 117.881
C2 C3 H9 117.881 C3 C1 C4 117.840
C3 C1 C5 117.840 C3 C2 H6 117.881
C3 C2 H7 117.881 C4 C1 C5 114.644
H6 C2 H7 114.479 H8 C3 H9 114.479
H10 C4 H13 108.003 H10 C4 H14 108.011
H11 C5 H12 108.003 H11 C5 H15 108.011
H12 C5 H15 108.011 H13 C4 H14 108.011
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability