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

using model chemistry: B2PLYP=FULLultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B2PLYP=FULLultrafine/6-31G*
 hartrees
Energy at 0K-155.751462
Energy at 298.15K 
HF Energy-155.574878
Nuclear repulsion energy108.103670
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 B2PLYP=FULLultrafine/6-31G*
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' 3318 3148 0.28 111.63 0.30 0.46
2 A' 3161 2999 17.98 82.29 0.73 0.84
3 A' 3080 2922 68.93 151.16 0.11 0.20
4 A' 3073 2915 29.06 131.70 0.02 0.04
5 A' 1875 1779 10.33 38.63 0.21 0.34
6 A' 1575 1495 9.37 16.34 0.40 0.57
7 A' 1533 1455 7.93 23.30 0.70 0.82
8 A' 1452 1377 0.25 15.16 0.62 0.76
9 A' 1224 1161 1.51 3.96 0.38 0.55
10 A' 1115 1058 8.15 1.64 0.26 0.41
11 A' 1094 1038 33.56 0.12 0.41 0.58
12 A' 999 947 3.07 9.88 0.47 0.64
13 A' 964 915 12.88 9.77 0.59 0.74
14 A' 689 653 0.18 15.90 0.59 0.74
15 A' 325 309 1.52 1.41 0.73 0.84
16 A" 3140 2979 51.18 88.49 0.75 0.86
17 A" 3135 2974 26.12 86.81 0.75 0.86
18 A" 1528 1450 7.05 18.36 0.75 0.86
19 A" 1150 1091 0.77 2.46 0.75 0.86
20 A" 1073 1018 0.89 3.84 0.75 0.86
21 A" 1011 960 2.26 13.23 0.75 0.86
22 A" 720 683 27.64 1.15 0.75 0.86
23 A" 296 280 9.95 1.29 0.75 0.86
24 A" 158 150 0.45 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18842.9 cm-1
Scaled (by 0.9487) Zero Point Vibrational Energy (zpe) 17876.2 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 B2PLYP=FULLultrafine/6-31G*
ABC
0.69061 0.21127 0.17249

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.042 -1.329 0.000
C3 1.155 -0.414 0.000
C4 -0.842 1.394 0.000
H5 -0.320 -1.865 0.911
H6 -0.320 -1.865 -0.911
H7 2.233 -0.364 0.000
H8 -0.234 2.302 0.000
H9 -1.493 1.409 -0.880
H10 -1.493 1.409 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50911.29901.47832.26112.26112.29772.13592.12582.1258
C21.50911.50682.83851.09321.09322.47073.63663.22233.2223
C31.29901.50682.69472.26092.26091.07833.05153.33443.3344
C41.47832.83852.69473.42443.42443.54191.09281.09501.0950
H52.26111.09322.26093.42441.82283.09824.26673.91303.4789
H62.26111.09322.26093.42441.82283.09824.26673.47893.9130
H72.29772.47071.07833.54193.09823.09823.63234.21944.2194
H82.13593.63663.05151.09284.26674.26673.63231.77671.7767
H92.12583.22233.33441.09503.91303.47894.21941.77671.7604
H102.12583.22233.33441.09503.47893.91304.21941.77671.7604

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 51.027 H1 C2 C6 119.807
C2 C3 C6 24.761 C2 C3 C10 72.598
C2 C6 C3 35.260 C2 C6 H4 49.483
C2 C6 H5 33.521 C3 C2 C6 119.979
C3 C6 H4 51.795 C3 C6 H5 66.227
C3 C10 H7 9.421 C3 C10 H8 65.234
C3 C10 H9 74.694 H4 C6 H5 74.565
C6 C3 C10 86.508 H7 C10 H8 58.805
H7 C10 H9 77.959 H8 C10 H9 60.304
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.151      
2 C -0.354      
3 C -0.194      
4 C -0.543      
5 H 0.132      
6 H 0.132      
7 H 0.153      
8 H 0.172      
9 H 0.175      
10 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.115 0.861 0.000 0.869
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.364 -0.531 0.011
y -0.531 -25.046 0.004
z 0.011 0.004 -25.344
Traceless
 xyz
x 1.831 -0.531 0.011
y -0.531 -0.692 0.004
z 0.011 0.004 -1.139
Polar
3z2-r2-2.278
x2-y21.682
xy-0.531
xz0.011
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.377 -0.453 -0.002
y -0.453 6.698 -0.001
z -0.002 -0.001 4.142


<r2> (average value of r2) Å2
<r2> 80.397
(<r2>)1/2 8.966