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

using model chemistry: B2PLYP/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/6-31G
 hartrees
Energy at 0K-155.643094
Energy at 298.15K 
HF Energy-155.519808
Nuclear repulsion energy107.303988
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/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' 3336 3336 0.08 109.98 0.28 0.44
2 A' 3140 3140 21.77 85.27 0.73 0.85
3 A' 3101 3101 56.25 128.21 0.14 0.25
4 A' 3052 3052 28.61 163.69 0.01 0.02
5 A' 1845 1845 9.53 33.72 0.20 0.33
6 A' 1583 1583 6.33 17.04 0.41 0.58
7 A' 1549 1549 9.09 27.82 0.71 0.83
8 A' 1476 1476 0.43 17.66 0.59 0.74
9 A' 1214 1214 5.37 2.68 0.38 0.55
10 A' 1130 1130 9.51 1.06 0.32 0.48
11 A' 1105 1105 41.72 1.24 0.40 0.57
12 A' 992 992 0.07 9.73 0.47 0.64
13 A' 961 961 11.93 12.14 0.48 0.65
14 A' 658 658 0.22 16.42 0.61 0.76
15 A' 333 333 1.60 1.68 0.72 0.84
16 A" 3173 3173 60.43 88.94 0.75 0.86
17 A" 3115 3115 18.86 87.18 0.75 0.86
18 A" 1542 1542 8.97 22.35 0.75 0.86
19 A" 1152 1152 0.28 2.22 0.75 0.86
20 A" 1086 1086 1.85 3.77 0.75 0.86
21 A" 1017 1017 2.13 16.22 0.75 0.86
22 A" 724 724 40.23 1.26 0.75 0.86
23 A" 292 292 13.16 1.59 0.75 0.86
24 A" 145 145 0.49 0.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18860.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18860.4 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 B2PLYP/6-31G
ABC
0.67679 0.20853 0.16983

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.182 0.000
C2 -0.094 -1.349 0.000
C3 1.149 -0.451 0.000
C4 -0.792 1.433 0.000
H5 -0.384 -1.871 0.912
H6 -0.384 -1.871 -0.912
H7 2.224 -0.426 0.000
H8 -0.144 2.315 0.000
H9 -1.443 1.482 -0.882
H10 -1.443 1.482 0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.53371.31121.48042.27942.27942.30532.13782.13262.1326
C21.53371.53352.86771.09031.09032.49473.66413.25703.2570
C31.31121.53352.70422.28022.28021.07533.05263.35043.3504
C41.48042.86772.70423.45193.45193.54261.09481.09691.0969
H52.27941.09032.28023.45191.82393.11754.29133.94753.5164
H62.27941.09032.28023.45191.82393.11754.29133.51643.9475
H72.30532.49471.07533.54263.11753.11753.62214.22594.2259
H82.13783.66413.05261.09484.29134.29133.62211.77711.7771
H92.13263.25703.35041.09693.94753.51644.22591.77711.7640
H102.13263.25703.35041.09693.51643.94754.22591.77711.7640

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 50.618 H1 C2 C6 119.654
C2 C3 C6 24.529 C2 C3 C10 73.206
C2 C6 C3 35.727 C2 C6 H4 49.580
C2 C6 H5 33.234 C3 C2 C6 119.744
C3 C6 H4 51.489 C3 C6 H5 66.425
C3 C10 H7 9.516 C3 C10 H8 64.829
C3 C10 H9 74.737 H4 C6 H5 74.681
C6 C3 C10 86.842 H7 C10 H8 58.281
H7 C10 H9 77.953 H8 C10 H9 60.245
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.053      
2 C -0.313      
3 C -0.145      
4 C -0.478      
5 H 0.125      
6 H 0.125      
7 H 0.154      
8 H 0.156      
9 H 0.161      
10 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.126 0.863 0.000 0.872
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.789 -0.515 0.012
y -0.515 -25.143 0.003
z 0.012 0.003 -25.712
Traceless
 xyz
x 1.639 -0.515 0.012
y -0.515 -0.393 0.003
z 0.012 0.003 -1.246
Polar
3z2-r2-2.492
x2-y21.354
xy-0.515
xz0.012
yz0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.326 -0.399 -0.002
y -0.399 6.721 -0.001
z -0.002 -0.001 4.058


<r2> (average value of r2) Å2
<r2> 81.498
(<r2>)1/2 9.028