return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-155.872272
Energy at 298.15K 
HF Energy-155.872272
Nuclear repulsion energy106.989636
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/daug-cc-pVDZ
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' 3181 3181 0.70 148.97 0.30 0.46
2 A' 3020 3020 21.81 100.67 0.70 0.82
3 A' 2943 2943 89.52 227.53 0.10 0.18
4 A' 2939 2939 37.48 263.00 0.03 0.06
5 A' 1790 1790 15.27 82.07 0.11 0.21
6 A' 1468 1468 6.28 12.00 0.30 0.46
7 A' 1420 1420 10.00 13.62 0.48 0.65
8 A' 1344 1344 0.16 11.19 0.45 0.62
9 A' 1137 1137 1.94 9.83 0.39 0.56
10 A' 1031 1031 2.54 3.81 0.09 0.16
11 A' 1005 1005 35.52 1.77 0.30 0.46
12 A' 939 939 2.68 9.06 0.18 0.31
13 A' 899 899 13.03 5.22 0.49 0.66
14 A' 636 636 0.38 16.11 0.60 0.75
15 A' 311 311 1.70 2.44 0.75 0.86
16 A" 3006 3006 56.34 143.34 0.75 0.86
17 A" 2989 2989 19.65 102.24 0.75 0.86
18 A" 1415 1415 7.39 6.46 0.75 0.86
19 A" 1072 1072 1.31 0.60 0.75 0.86
20 A" 1002 1002 0.04 1.37 0.75 0.86
21 A" 944 944 2.16 0.95 0.75 0.86
22 A" 643 643 31.76 1.46 0.75 0.86
23 A" 270 270 12.96 0.17 0.75 0.86
24 A" 165 165 0.38 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17784.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17784.3 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/daug-cc-pVDZ
ABC
0.67287 0.20769 0.16926

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.181 0.000
C2 -0.070 -1.346 0.000
C3 1.158 -0.434 0.000
C4 -0.820 1.421 0.000
H5 -0.355 -1.882 0.923
H6 -0.355 -1.882 -0.923
H7 2.247 -0.396 0.000
H8 -0.186 2.326 0.000
H9 -1.480 1.450 -0.889
H10 -1.480 1.450 0.889

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52911.31141.48722.28772.28772.32022.15282.14242.1424
C21.52911.53032.86781.10461.10462.50463.67403.25533.2553
C31.31141.53032.71242.28872.28871.08963.06963.36133.3613
C41.48722.86782.71243.46133.46133.56571.10471.10721.1072
H52.28771.10462.28873.46131.84663.13534.31093.95593.5166
H62.28771.10462.28873.46131.84663.13534.31093.51663.9559
H72.32022.50461.08963.56573.13533.13533.65094.25324.2532
H82.15283.67403.06961.10474.31094.31093.65091.79771.7977
H92.14243.25533.36131.10723.95593.51664.25321.79771.7778
H102.14243.25533.36131.10723.51663.95594.25321.79771.7778

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 50.765 H1 C2 C6 119.731
C2 C3 C6 24.777 C2 C3 C10 72.793
C2 C6 C3 35.493 C2 C6 H4 49.398
C2 C6 H5 33.293 C3 C2 C6 119.730
C3 C6 H4 51.507 C3 C6 H5 66.209
C3 C10 H7 9.497 C3 C10 H8 64.997
C3 C10 H9 74.666 H4 C6 H5 74.529
C6 C3 C10 86.694 H7 C10 H8 58.490
H7 C10 H9 77.936 H8 C10 H9 60.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.820      
2 C 2.410      
3 C 2.003      
4 C 0.760      
5 H -1.047      
6 H -1.047      
7 H -1.052      
8 H -0.543      
9 H -0.332      
10 H -0.332      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.167 0.902 0.000 0.918
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.395 -0.696 0.000
y -0.696 -25.946 0.000
z 0.000 0.000 -26.284
Traceless
 xyz
x 1.721 -0.696 0.000
y -0.696 -0.607 0.000
z 0.000 0.000 -1.113
Polar
3z2-r2-2.227
x2-y21.552
xy-0.696
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.280 -0.636 0.000
y -0.636 8.836 0.000
z 0.000 0.000 6.055


<r2> (average value of r2) Å2
<r2> 82.251
(<r2>)1/2 9.069