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All results from a given calculation for CH3CH (methylmethylene)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 3A"
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-77.994729
Energy at 298.15K-77.997427
HF Energy-77.994729
Nuclear repulsion energy31.887540
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/Def2TZVPP
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' 3347 3033 8.07      
2 A' 3209 2909 24.76      
3 A' 3124 2831 29.07      
4 A' 1588 1440 4.74      
5 A' 1519 1377 0.43      
6 A' 1204 1091 1.07      
7 A' 1120 1015 1.15      
8 A' 839 761 4.38      
9 A" 3165 2869 34.02      
10 A" 1585 1437 5.38      
11 A" 1083 982 0.38      
12 A" 219 198 22.09      

Unscaled Zero Point Vibrational Energy (zpe) 11000.7 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 9971.0 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/Def2TZVPP
ABC
4.63621 0.81544 0.79524

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.862 0.000
C2 0.050 -0.619 0.000
H3 -0.754 1.571 0.000
H4 1.064 -0.999 0.000
H5 -0.452 -1.016 0.879
H6 -0.452 -1.016 -0.879

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.48101.07212.11992.13372.1337
C21.48102.33311.08351.08701.0870
H31.07212.33313.14882.74972.7497
H42.11991.08353.14881.75241.7524
H52.13371.08702.74971.75241.7571
H62.13371.08702.74971.75241.7571

picture of methylmethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 110.553 C1 C2 H5 111.463
C1 C2 H6 111.463 C2 C1 H3 131.422
H4 C2 H5 107.673 H4 C2 H6 107.673
H5 C2 H6 107.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.142      
2 C -0.130      
3 H 0.082      
4 H 0.068      
5 H 0.061      
6 H 0.061      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.506 -0.555 0.000 0.751
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.540 -1.080 0.000
y -1.080 -13.913 0.000
z 0.000 0.000 -14.346
Traceless
 xyz
x 0.590 -1.080 0.000
y -1.080 0.030 0.000
z 0.000 0.000 -0.620
Polar
3z2-r2-1.240
x2-y20.373
xy-1.080
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.124 -0.166 0.000
y -0.166 3.874 0.000
z 0.000 0.000 3.024


<r2> (average value of r2) Å2
<r2> 24.684
(<r2>)1/2 4.968