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All results from a given calculation for C4H6 (1-Methylcyclopropene)

using model chemistry: CCD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-155.470444
Energy at 298.15K 
HF Energy-154.880763
Nuclear repulsion energy108.055917
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 CCD/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' 3358 3165 0.03      
2 A' 3201 3016 19.09      
3 A' 3125 2945 67.89      
4 A' 3105 2926 27.60      
5 A' 1898 1789 13.10      
6 A' 1584 1492 7.33      
7 A' 1536 1447 7.58      
8 A' 1458 1374 0.03      
9 A' 1240 1169 3.22      
10 A' 1124 1059 2.71      
11 A' 1116 1051 35.57      
12 A' 1009 951 5.28      
13 A' 971 915 13.63      
14 A' 695 655 0.65      
15 A' 332 313 1.41      
16 A" 3194 3010 45.35      
17 A" 3180 2996 19.29      
18 A" 1527 1439 7.33      
19 A" 1152 1086 2.16      
20 A" 1069 1007 0.00      
21 A" 1010 952 1.31      
22 A" 688 649 40.91      
23 A" 278 262 15.07      
24 A" 148 140 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 18998.8 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 17902.6 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 CCD/6-31+G**
ABC
0.68861 0.21101 0.17219

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.177 0.000
C2 -0.050 -1.331 0.000
C3 1.156 -0.418 0.000
C4 -0.839 1.400 0.000
H5 -0.324 -1.861 0.911
H6 -0.324 -1.861 -0.911
H7 2.230 -0.372 0.000
H8 -0.221 2.297 0.000
H9 -1.484 1.416 -0.880
H10 -1.484 1.416 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50931.30031.48302.25602.25602.29642.13182.12382.1238
C21.50931.51262.84321.08871.08872.47313.63283.22143.2214
C31.30031.51262.69912.25902.25901.07473.04463.33263.3326
C41.48302.84322.69913.42513.42513.54351.08971.09141.0914
H52.25601.08872.25903.42511.82113.09354.25873.91043.4763
H62.25601.08872.25903.42511.82113.09354.25873.47633.9104
H72.29642.47311.07473.54353.09353.09353.62364.21434.2143
H82.13183.63283.04461.08974.25874.25873.62361.77431.7743
H92.12383.22143.33261.09143.91043.47634.21431.77431.7608
H102.12383.22143.33261.09143.47633.91044.21431.77431.7608

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.973 H1 C2 C6 119.662
C2 C3 C6 24.759 C2 C3 C10 72.590
C2 C6 C3 35.580 C2 C6 H4 49.605
C2 C6 H5 33.245 C3 C2 C6 119.661
C3 C6 H4 51.897 C3 C6 H5 66.230
C3 C10 H7 9.403 C3 C10 H8 65.070
C3 C10 H9 74.682 H4 C6 H5 74.583
C6 C3 C10 86.505 H7 C10 H8 58.660
H7 C10 H9 77.942 H8 C10 H9 60.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability