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

using model chemistry: CCD/TZVP

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/TZVP
 hartrees
Energy at 0K-155.521946
Energy at 298.15K 
HF Energy-154.916719
Nuclear repulsion energy108.320394
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/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 A' 3336 3163 0.17      
2 A' 3159 2994 18.76      
3 A' 3092 2931 66.09      
4 A' 3070 2910 25.69      
5 A' 1892 1793 12.56      
6 A' 1567 1486 5.99      
7 A' 1518 1439 7.43      
8 A' 1443 1368 0.07      
9 A' 1226 1162 3.38      
10 A' 1113 1055 2.38      
11 A' 1106 1048 35.90      
12 A' 999 947 4.10      
13 A' 963 913 13.05      
14 A' 689 653 0.60      
15 A' 331 314 1.32      
16 A" 3160 2996 46.20      
17 A" 3137 2974 18.10      
18 A" 1504 1425 8.00      
19 A" 1149 1089 2.88      
20 A" 1064 1009 0.06      
21 A" 1006 954 1.06      
22 A" 666 631 35.56      
23 A" 274 260 13.82      
24 A" 149 142 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 18805.3 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 17827.4 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 CCD/TZVP
ABC
0.69094 0.21230 0.17322

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.176 0.000
C2 -0.036 -1.330 0.000
C3 1.155 -0.402 0.000
C4 -0.850 1.386 0.000
H5 -0.302 -1.860 0.913
H6 -0.302 -1.860 -0.913
H7 2.228 -0.345 0.000
H8 -0.245 2.293 0.000
H9 -1.496 1.394 -0.881
H10 -1.496 1.394 0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50641.29201.47912.25212.25212.28802.13142.12092.1209
C21.50641.50992.83571.08871.08872.46833.62933.21383.2138
C31.29201.50992.68732.25492.25491.07393.03753.32173.3217
C41.47912.83572.68733.41683.41683.53191.09051.09241.0924
H52.25211.08872.25493.41681.82513.08704.25333.90303.4667
H62.25211.08872.25493.41681.82513.08704.25333.46673.9030
H72.28802.46831.07393.53193.08703.08703.61634.20374.2037
H82.13143.62933.03751.09054.25334.25333.61631.77511.7751
H92.12093.21383.32171.09243.90303.46674.20371.77511.7616
H102.12093.21383.32171.09243.46673.90304.20371.77511.7616

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 50.724 H1 C2 C6 119.540
C2 C3 C6 24.845 C2 C3 C10 72.688
C2 C6 C3 35.640 C2 C6 H4 49.633
C2 C6 H5 33.052 C3 C2 C6 119.515
C3 C6 H4 51.759 C3 C6 H5 66.128
C3 C10 H7 9.404 C3 C10 H8 65.136
C3 C10 H9 74.624 H4 C6 H5 74.510
C6 C3 C10 86.612 H7 C10 H8 58.739
H7 C10 H9 77.905 H8 C10 H9 60.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability