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

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-154.095018
Energy at 298.15K 
HF Energy-154.095018
Nuclear repulsion energy106.776167
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 TPSSh/STO-3G
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' 3522 3522 28.66 54.74 0.32 0.49
2 A' 3475 3475 0.15 39.23 0.75 0.86
3 A' 3319 3319 5.63 47.66 0.14 0.24
4 A' 3302 3302 0.32 68.96 0.01 0.03
5 A' 2006 2006 2.04 21.63 0.17 0.29
6 A' 1682 1682 8.52 15.28 0.62 0.77
7 A' 1669 1669 4.63 23.28 0.70 0.82
8 A' 1553 1553 2.47 16.94 0.58 0.74
9 A' 1356 1356 0.55 3.92 0.39 0.56
10 A' 1239 1239 29.66 1.59 0.20 0.33
11 A' 1172 1172 11.63 0.13 0.41 0.58
12 A' 1066 1066 1.11 7.06 0.61 0.76
13 A' 1028 1028 7.93 12.58 0.63 0.77
14 A' 751 751 0.66 12.10 0.55 0.71
15 A' 340 340 0.71 0.91 0.71 0.83
16 A" 3451 3451 1.87 42.21 0.75 0.86
17 A" 3451 3451 10.01 39.41 0.75 0.86
18 A" 1663 1663 4.40 17.61 0.75 0.86
19 A" 1191 1191 1.96 1.35 0.75 0.86
20 A" 1133 1133 3.94 4.11 0.75 0.86
21 A" 1083 1083 3.52 8.19 0.75 0.86
22 A" 790 790 16.65 0.73 0.75 0.86
23 A" 317 317 5.98 1.05 0.75 0.86
24 A" 112 112 0.18 0.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20335.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20335.4 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 TPSSh/STO-3G
ABC
0.68026 0.20460 0.16765

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.173 0.000
C2 -0.091 -1.348 0.000
C3 1.146 -0.468 0.000
C4 -0.796 1.455 0.000
H5 -0.389 -1.881 0.920
H6 -0.389 -1.881 -0.920
H7 2.238 -0.448 0.000
H8 -0.125 2.331 0.000
H9 -1.445 1.504 -0.893
H10 -1.445 1.504 0.893

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52451.31301.50872.28462.28462.32262.16122.15792.1579
C21.52451.51802.89081.10401.10402.49653.67953.28143.2814
C31.31301.51802.73272.28012.28011.09223.07393.37633.3763
C41.50872.89082.73273.48483.48483.58131.10301.10511.1051
H52.28461.10402.28013.48481.83953.13034.31963.98273.5465
H62.28461.10402.28013.48481.83953.13034.31963.54653.9827
H72.32262.49651.09223.58133.13033.13033.64814.26314.2631
H82.16123.67953.07391.10304.31964.31963.64811.79541.7954
H92.15793.28143.37631.10513.98273.54654.26311.79541.7855
H102.15793.28143.37631.10513.54653.98274.26311.79541.7855

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 51.133 H1 C2 C6 119.869
C2 C3 C6 24.793 C2 C3 C10 73.358
C2 C6 C3 35.211 C2 C6 H4 49.413
C2 C6 H5 33.583 C3 C2 C6 119.996
C3 C6 H4 51.580 C3 C6 H5 66.211
C3 C10 H7 9.639 C3 C10 H8 64.738
C3 C10 H9 74.668 H4 C6 H5 74.697
C6 C3 C10 87.260 H7 C10 H8 58.100
H7 C10 H9 77.912 H8 C10 H9 60.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.017      
2 C -0.134      
3 C -0.106      
4 C -0.207      
5 H 0.055      
6 H 0.055      
7 H 0.091      
8 H 0.087      
9 H 0.088      
10 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.092 0.787 0.000 0.792
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.643 -0.455 0.000
y -0.455 3.804 0.000
z 0.000 0.000 1.984


<r2> (average value of r2) Å2
<r2> 81.260
(<r2>)1/2 9.014