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

using model chemistry: BLYP/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 BLYP/6-31+G**
 hartrees
Energy at 0K-155.871593
Energy at 298.15K 
HF Energy-155.871593
Nuclear repulsion energy107.112305
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 BLYP/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' 3187 3171 1.25 154.68 0.33 0.50
2 A' 3026 3010 23.86 107.92 0.69 0.81
3 A' 2949 2933 57.66 266.98 0.04 0.08
4 A' 2947 2931 67.89 119.52 0.17 0.30
5 A' 1793 1784 16.05 71.44 0.14 0.24
6 A' 1488 1481 8.70 13.27 0.45 0.62
7 A' 1447 1440 10.93 16.32 0.56 0.72
8 A' 1370 1363 0.31 16.13 0.64 0.78
9 A' 1142 1136 2.29 12.78 0.27 0.42
10 A' 1041 1036 1.92 4.83 0.14 0.24
11 A' 1021 1015 44.54 1.46 0.16 0.27
12 A' 940 935 1.99 10.57 0.25 0.39
13 A' 908 903 13.90 6.61 0.47 0.64
14 A' 641 638 0.37 15.65 0.63 0.78
15 A' 311 309 1.87 2.14 0.75 0.85
16 A" 3005 2990 52.75 126.91 0.75 0.86
17 A" 2995 2979 24.44 105.92 0.75 0.86
18 A" 1443 1436 8.87 8.71 0.75 0.86
19 A" 1089 1084 0.55 0.67 0.75 0.86
20 A" 1015 1010 0.20 1.25 0.75 0.86
21 A" 956 951 2.54 3.39 0.75 0.86
22 A" 680 677 34.66 2.01 0.75 0.86
23 A" 283 282 14.40 0.27 0.75 0.86
24 A" 158 157 0.54 0.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17917.8 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 17822.9 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 BLYP/6-31+G**
ABC
0.67554 0.20786 0.16947

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.183 0.000
C2 -0.041 -1.345 0.000
C3 1.167 -0.411 0.000
C4 -0.852 1.402 0.000
H5 -0.317 -1.884 0.921
H6 -0.317 -1.884 -0.921
H7 2.253 -0.356 0.000
H8 -0.245 2.322 0.000
H9 -1.512 1.415 -0.886
H10 -1.512 1.415 0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52781.30971.48772.28482.28482.31612.15372.14232.1423
C21.52781.52652.86421.10231.10232.49713.67273.25063.2506
C31.30971.52652.71412.28482.28481.08663.07713.36123.3612
C41.48772.86422.71413.45483.45483.56781.10211.10471.1047
H52.28481.10232.28483.45481.84113.12804.30693.94713.5096
H62.28481.10232.28483.45481.84113.12804.30693.50963.9471
H72.31612.49711.08663.56783.12803.12803.66254.25344.2534
H82.15373.67273.07711.10214.30694.30693.66251.79181.7918
H92.14233.25063.36121.10473.94713.50964.25341.79181.7720
H102.14233.25063.36121.10473.50963.94714.25341.79181.7720

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 50.784 H1 C2 C6 119.745
C2 C3 C6 24.737 C2 C3 C10 72.642
C2 C6 C3 35.416 C2 C6 H4 49.494
C2 C6 H5 33.370 C3 C2 C6 119.847
C3 C6 H4 51.675 C3 C6 H5 66.240
C3 C10 H7 9.410 C3 C10 H8 65.264
C3 C10 H9 74.716 H4 C6 H5 74.546
C6 C3 C10 86.497 H7 C10 H8 58.834
H7 C10 H9 77.977 H8 C10 H9 60.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.263      
2 C -0.364      
3 C -0.074      
4 C -0.681      
5 H 0.127      
6 H 0.127      
7 H 0.113      
8 H 0.160      
9 H 0.164      
10 H 0.164      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.218 0.896 0.000 0.922
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.301 -0.638 0.000
y -0.638 -25.860 0.000
z 0.000 0.000 -26.279
Traceless
 xyz
x 1.769 -0.638 0.000
y -0.638 -0.570 0.000
z 0.000 0.000 -1.199
Polar
3z2-r2-2.399
x2-y21.559
xy-0.638
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.787 -0.677 0.000
y -0.677 8.167 0.000
z 0.000 0.000 5.369


<r2> (average value of r2) Å2
<r2> 82.113
(<r2>)1/2 9.062