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All results from a given calculation for CH3CH (methylmethylene)

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 CS 3A"
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-78.367718
Energy at 298.15K-78.370352
HF Energy-78.297864
Nuclear repulsion energy31.811910
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
(Å4/u)
Dep P Dep U
1 A' 3270 3104 11.01      
2 A' 3123 2964 15.36      
3 A' 3017 2864 19.85      
4 A' 1515 1438 5.05      
5 A' 1443 1369 1.26      
6 A' 1141 1083 1.31      
7 A' 1108 1051 1.83      
8 A' 797 756 10.25      
9 A" 3065 2909 25.88      
10 A" 1512 1436 5.59      
11 A" 1029 976 1.62      
12 A" 206 196 27.68      

Unscaled Zero Point Vibrational Energy (zpe) 10611.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 10072.7 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
4.58489 0.81685 0.79715

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 0.049 0.858 0.000
C2 0.049 -0.614 0.000
H3 -0.747 1.592 0.000
H4 1.073 -1.002 0.000
H5 -0.455 -1.027 0.886
H6 -0.455 -1.027 -0.886

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.47141.08232.12292.14302.1430
C21.47142.34451.09511.09991.0999
H31.08232.34453.16812.78052.7805
H42.12291.09513.16811.76591.7659
H52.14301.09992.78051.76591.7727
H62.14301.09992.78051.76591.7727

picture of methylmethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 110.761 C1 C2 H5 112.095
C1 C2 H6 112.095 C2 C1 H3 132.706
H4 C2 H5 107.119 H4 C2 H6 107.119
H5 C2 H6 107.375
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 -0.174      
2 C -0.503      
3 H 0.161      
4 H 0.178      
5 H 0.169      
6 H 0.169      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.599 -0.266 0.000
y -0.266 3.517 0.000
z 0.000 0.000 2.310


<r2> (average value of r2) Å2
<r2> 24.547
(<r2>)1/2 4.954