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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: MP3=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 MP3=FULL/6-31+G**
 hartrees
Energy at 0K-156.750851
Energy at 298.15K-156.759545
HF Energy-156.111174
Nuclear repulsion energy124.478772
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 MP3=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' 3327 3100 26.19      
2 A' 3245 3023 16.36      
3 A' 3234 3013 14.60      
4 A' 3198 2979 22.08      
5 A' 3117 2904 34.67      
6 A' 1583 1475 1.05      
7 A' 1556 1450 7.85      
8 A' 1486 1384 3.62      
9 A' 1445 1347 2.57      
10 A' 1275 1188 0.06      
11 A' 1251 1166 0.13      
12 A' 1116 1040 8.07      
13 A' 1036 965 11.29      
14 A' 974 907 2.04      
15 A' 826 769 4.33      
16 A' 800 745 4.61      
17 A' 374 348 0.22      
18 A" 3314 3087 0.22      
19 A" 3228 3007 22.21      
20 A" 3199 2980 31.57      
21 A" 1545 1439 1.81      
22 A" 1528 1423 1.63      
23 A" 1242 1157 0.70      
24 A" 1195 1113 0.00      
25 A" 1148 1070 3.39      
26 A" 1121 1044 1.19      
27 A" 910 847 10.82      
28 A" 858 799 5.21      
29 A" 353 329 0.57      
30 A" 227 212 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24854.5 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 23154.4 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 MP3=FULL/6-31+G**
ABC
0.52256 0.21244 0.18654

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.405 0.000
C2 -0.884 1.277 0.000
H3 1.286 0.943 0.000
C4 0.348 -0.897 0.755
C5 0.348 -0.897 -0.755
H6 1.250 -1.200 1.263
H7 1.250 -1.200 -1.263
H8 -0.565 -1.182 1.256
H9 -0.565 -1.182 -1.256
H10 -1.784 0.662 0.000
H11 -0.915 1.915 0.883
H12 -0.915 1.915 -0.883

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50981.08191.50431.50432.23242.23242.22042.22042.14692.15742.1574
C21.50982.19592.61032.61033.50533.50532.78002.78001.08971.08941.0894
H31.08192.19592.19892.19892.48772.48773.08603.08603.08262.56272.5627
C41.50432.61032.19891.50951.07912.23081.08022.22702.74623.08463.4900
C51.50432.61032.19891.50952.23081.07912.22701.08022.74623.49003.0846
H62.23243.50532.48771.07912.23082.52551.81573.10523.77703.81224.3580
H72.23243.50532.48772.23081.07912.52553.10521.81573.77704.35803.8122
H82.22042.78003.08601.08022.22701.81573.10522.51252.54233.13883.7801
H92.22042.78003.08602.22701.08023.10521.81572.51252.54233.78013.1388
H102.14691.08973.08262.74622.74623.77703.77702.54232.54231.76171.7617
H112.15741.08942.56273.08463.49003.81224.35803.13883.78011.76171.7658
H122.15741.08942.56273.49003.08464.35803.81223.78013.13881.76171.7658

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.314 C1 C2 H11 111.168
C1 C2 H12 111.168 C1 C4 H5 59.886
C1 C4 H6 118.637 C1 C4 H8 117.490
C1 H5 C4 59.886 C1 H5 H7 118.637
C1 H5 H9 117.490 C2 C1 C3 114.835
C2 C1 C4 119.995 C2 C1 H5 119.995
C3 C1 C4 115.511 C3 C1 H5 115.511
C4 C1 H5 60.228 C4 H5 H7 118.083
C4 H5 H9 117.664 H5 C4 H6 118.083
H5 C4 H8 117.664 H6 C4 H8 114.464
H7 H5 H9 114.464 H10 C2 H11 107.893
H10 C2 H12 107.893 H11 C2 H12 108.277
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability