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All results from a given calculation for CH3CH (methylmethylene)

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 3A"
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-78.019346
Energy at 298.15K-78.021958
HF Energy-78.019346
Nuclear repulsion energy31.698991
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 wB97X-D/3-21G*
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' 3236 3067 10.27      
2 A' 3119 2956 9.30      
3 A' 3023 2865 12.24      
4 A' 1539 1459 9.06      
5 A' 1458 1382 11.27      
6 A' 1137 1078 6.30      
7 A' 1066 1010 1.21      
8 A' 797 755 14.79      
9 A" 3071 2910 17.13      
10 A" 1537 1457 11.51      
11 A" 1046 992 6.46      
12 A" 189 179 34.95      

Unscaled Zero Point Vibrational Energy (zpe) 10608.3 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 10054.5 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 wB97X-D/3-21G*
ABC
4.54639 0.81041 0.79059

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.863 0.000
C2 0.050 -0.620 0.000
H3 -0.759 1.588 0.000
H4 1.076 -1.006 0.000
H5 -0.457 -1.023 0.890
H6 -0.457 -1.023 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.48311.08622.13252.14652.1465
C21.48312.35131.09681.10061.1006
H31.08622.35133.17772.77512.7751
H42.13251.09683.17771.77291.7729
H52.14651.10062.77511.77291.7798
H62.14651.10062.77511.77291.7798

picture of methylmethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 110.608 C1 C2 H5 111.502
C1 C2 H6 111.502 C2 C1 H3 131.844
H4 C2 H5 107.571 H4 C2 H6 107.571
H5 C2 H6 107.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189      
2 C -0.720      
3 H 0.203      
4 H 0.243      
5 H 0.231      
6 H 0.231      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.602 -0.681 0.000 0.909
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.310 -1.225 0.000
y -1.225 -13.253 0.000
z 0.000 0.000 -14.143
Traceless
 xyz
x 0.388 -1.225 0.000
y -1.225 0.473 0.000
z 0.000 0.000 -0.862
Polar
3z2-r2-1.723
x2-y2-0.056
xy-1.225
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.416 -0.277 0.000
y -0.277 3.342 0.000
z 0.000 0.000 2.115


<r2> (average value of r2) Å2
<r2> 24.625
(<r2>)1/2 4.962