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

using model chemistry: HF/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/cc-pVQZ
 hartrees
Energy at 0K-154.933769
Energy at 298.15K 
HF Energy-154.933769
Nuclear repulsion energy109.182655
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 HF/cc-pVQZ
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' 3428 3114 0.77 94.51 0.31 0.47
2 A' 3237 2940 26.57 79.15 0.72 0.83
3 A' 3162 2873 23.27 272.01 0.00 0.00
4 A' 3160 2871 106.91 88.69 0.30 0.46
5 A' 1992 1809 21.19 71.03 0.14 0.25
6 A' 1646 1496 4.89 9.52 0.31 0.47
7 A' 1598 1452 8.39 9.44 0.60 0.75
8 A' 1529 1389 0.40 2.43 0.66 0.79
9 A' 1283 1166 5.60 7.24 0.47 0.64
10 A' 1190 1081 0.75 4.01 0.09 0.16
11 A' 1181 1072 42.86 2.70 0.20 0.33
12 A' 1049 953 2.84 8.94 0.29 0.45
13 A' 1028 933 19.28 9.64 0.24 0.38
14 A' 728 662 0.58 15.52 0.51 0.68
15 A' 349 317 1.66 1.45 0.74 0.85
16 A" 3215 2920 0.01 73.32 0.75 0.86
17 A" 3212 2917 86.43 111.95 0.75 0.86
18 A" 1597 1451 7.65 5.78 0.75 0.86
19 A" 1214 1102 2.40 0.89 0.75 0.86
20 A" 1149 1044 0.78 2.84 0.75 0.86
21 A" 1067 970 1.46 2.56 0.75 0.86
22 A" 842 765 41.75 1.79 0.75 0.86
23 A" 336 305 13.45 0.76 0.75 0.86
24 A" 174 158 0.29 0.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19683.1 cm-1
Scaled (by 0.9084) Zero Point Vibrational Energy (zpe) 17880.1 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 HF/cc-pVQZ
ABC
0.70405 0.21491 0.17555

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.171 0.000
C2 0.004 -1.323 0.000
C3 1.153 -0.366 0.000
C4 -0.883 1.357 0.000
H5 -0.251 -1.861 0.902
H6 -0.251 -1.861 -0.902
H7 2.214 -0.278 0.000
H8 -0.307 2.273 0.000
H9 -1.524 1.346 -0.873
H10 -1.524 1.346 0.873

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.49361.27151.47832.23762.23762.25932.12392.11302.1130
C21.49361.49482.82231.08141.08142.44453.60853.19643.1964
C31.27151.49482.66662.24032.24031.06523.01553.29483.2948
C41.47832.82232.66663.40133.40133.50221.08151.08341.0834
H52.23761.08142.24033.40131.80493.06524.23133.88053.4504
H62.23761.08142.24033.40131.80493.06524.23133.45043.8805
H72.25932.44451.06523.50223.06523.06523.58684.16804.1680
H82.12393.60853.01551.08154.23134.23133.58681.76101.7610
H92.11303.19643.29481.08343.88053.45044.16801.76101.7470
H102.11303.19643.29481.08343.45043.88054.16801.76101.7470

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 50.365 H1 C2 C6 119.827
C2 C3 C6 24.714 C2 C3 C10 73.041
C2 C6 C3 35.306 C2 C6 H4 49.547
C2 C6 H5 33.429 C3 C2 C6 119.980
C3 C6 H4 51.549 C3 C6 H5 66.245
C3 C10 H7 9.442 C3 C10 H8 65.222
C3 C10 H9 74.626 H4 C6 H5 74.613
C6 C3 C10 86.831 H7 C10 H8 58.783
H7 C10 H9 77.903 H8 C10 H9 60.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.006      
2 C -0.111      
3 C -0.255      
4 C -0.151      
5 H 0.064      
6 H 0.064      
7 H 0.144      
8 H 0.080      
9 H 0.085      
10 H 0.085      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.159 0.910 0.000 0.924
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.561 -0.579 0.000
y -0.579 -25.463 0.000
z 0.000 0.000 -25.899
Traceless
 xyz
x 2.120 -0.579 0.000
y -0.579 -0.733 0.000
z 0.000 0.000 -1.387
Polar
3z2-r2-2.774
x2-y21.902
xy-0.579
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.146 -0.514 0.000
y -0.514 7.373 0.000
z 0.000 0.000 5.179


<r2> (average value of r2) Å2
<r2> 79.478
(<r2>)1/2 8.915