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

using model chemistry: B3PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-155.944185
Energy at 298.15K 
HF Energy-155.944185
Nuclear repulsion energy108.608514
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 B3PW91/aug-cc-pVTZ
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' 3270 3156 0.35 121.17 0.29 0.45
2 A' 3113 3004 15.23 83.91 0.70 0.83
3 A' 3028 2923 57.64 313.96 0.04 0.07
4 A' 3026 2921 50.09 117.61 0.12 0.22
5 A' 1869 1803 15.34 78.24 0.12 0.21
6 A' 1517 1464 4.76 10.18 0.31 0.47
7 A' 1472 1421 10.90 10.90 0.50 0.67
8 A' 1395 1347 0.39 8.15 0.47 0.64
9 A' 1197 1155 2.44 8.46 0.41 0.58
10 A' 1087 1049 6.15 5.23 0.12 0.22
11 A' 1067 1030 31.01 1.80 0.45 0.62
12 A' 983 949 6.82 7.32 0.19 0.32
13 A' 943 910 14.53 4.13 0.48 0.65
14 A' 687 663 0.90 14.26 0.55 0.71
15 A' 326 314 1.93 1.82 0.75 0.86
16 A" 3089 2981 38.32 115.01 0.75 0.86
17 A" 3082 2975 21.99 89.88 0.75 0.86
18 A" 1469 1417 8.81 5.45 0.75 0.86
19 A" 1119 1080 1.20 0.56 0.75 0.86
20 A" 1049 1013 0.30 2.05 0.75 0.86
21 A" 986 951 2.56 0.78 0.75 0.86
22 A" 736 710 33.52 1.37 0.75 0.86
23 A" 303 292 13.19 0.23 0.75 0.86
24 A" 162 157 0.43 0.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18487.0 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 17841.8 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 B3PW91/aug-cc-pVTZ
ABC
0.69486 0.21377 0.17441

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.178 0.000
C2 -0.036 -1.324 0.000
C3 1.151 -0.403 0.000
C4 -0.844 1.381 0.000
H5 -0.306 -1.857 0.913
H6 -0.306 -1.857 -0.913
H7 2.226 -0.347 0.000
H8 -0.246 2.292 0.000
H9 -1.496 1.389 -0.878
H10 -1.496 1.389 0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50281.28921.46942.25112.25112.28672.12842.11542.1154
C21.50281.50252.82321.09091.09092.46323.62273.20383.2038
C31.28921.50252.67612.25182.25181.07603.03543.31483.3148
C41.46942.82322.67613.40633.40633.52281.09071.09341.0934
H52.25111.09092.25183.40631.82593.08564.24863.89303.4569
H62.25111.09092.25183.40631.82593.08564.24863.45693.8930
H72.28672.46321.07603.52283.08563.08563.61594.19964.1996
H82.12843.62273.03541.09074.24864.24863.61591.77501.7750
H92.11543.20383.31481.09343.89303.45694.19961.77501.7554
H102.11543.20383.31481.09343.45693.89304.19961.77501.7554

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 50.805 H1 C2 C6 119.588
C2 C3 C6 24.890 C2 C3 C10 72.587
C2 C6 C3 35.429 C2 C6 H4 49.541
C2 C6 H5 33.188 C3 C2 C6 119.681
C3 C6 H4 51.680 C3 C6 H5 66.083
C3 C10 H7 9.413 C3 C10 H8 65.261
C3 C10 H9 74.646 H4 C6 H5 74.454
C6 C3 C10 86.532 H7 C10 H8 58.849
H7 C10 H9 77.937 H8 C10 H9 60.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.815      
2 C -0.688      
3 C -0.968      
4 C -0.541      
5 H 0.229      
6 H 0.229      
7 H 0.257      
8 H 0.223      
9 H 0.223      
10 H 0.223      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.180 0.912 0.000 0.929
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.515 -0.675 0.000
y -0.675 -25.200 0.000
z 0.000 0.000 -25.600
Traceless
 xyz
x 1.885 -0.675 0.000
y -0.675 -0.642 0.000
z 0.000 0.000 -1.243
Polar
3z2-r2-2.485
x2-y21.685
xy-0.675
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.694 -0.613 0.000
y -0.613 8.096 0.000
z 0.000 0.000 5.642


<r2> (average value of r2) Å2
<r2> 79.842
(<r2>)1/2 8.935