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 CH3CHN (methylmethaniminyl radical)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-132.530662
Energy at 298.15K-132.534547
HF Energy-132.530662
Nuclear repulsion energy63.738595
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 mPW1PW91/3-21G
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' 3186 3042 5.56      
2 A' 3079 2939 4.36      
3 A' 3022 2885 19.40      
4 A' 1688 1611 0.39      
5 A' 1536 1466 12.97      
6 A' 1441 1375 11.75      
7 A' 1289 1231 1.02      
8 A' 1073 1024 13.49      
9 A' 917 875 2.61      
10 A' 429 410 15.41      
11 A" 3146 3003 6.53      
12 A" 1551 1480 15.69      
13 A" 1105 1055 0.02      
14 A" 777 742 22.09      
15 A" 187 178 0.81      

Unscaled Zero Point Vibrational Energy (zpe) 12212.3 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 11657.8 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 mPW1PW91/3-21G
ABC
1.89845 0.34253 0.30696

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.483 0.000
C2 -0.845 -0.776 0.000
N3 1.259 0.510 0.000
H4 -0.565 1.425 0.000
H5 -0.206 -1.660 0.000
H6 -1.486 -0.791 0.888
H7 -1.486 -0.791 -0.888

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.51591.25911.09842.15292.14932.1493
C21.51592.46572.21871.09121.09521.0952
N31.25912.46572.03992.61843.16483.1648
H41.09842.21872.03993.10612.55902.5590
H52.15291.09122.61843.10611.78401.7840
H62.14931.09523.16482.55901.78401.7754
H72.14931.09523.16482.55901.78401.7754

picture of methylmethaniminyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.274 C1 C2 H6 109.748
C1 C2 H7 109.748 C2 C1 N3 125.123
C2 C1 H4 115.201 N3 C1 H4 119.676
H5 C2 H6 109.368 H5 C2 H7 109.368
H6 C2 H7 108.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.004      
2 C -0.686      
3 N -0.299      
4 H 0.247      
5 H 0.252      
6 H 0.246      
7 H 0.246      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.688 -0.425 0.000 2.722
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.410 -1.219 0.000
y -1.219 -17.206 0.000
z 0.000 0.000 -18.757
Traceless
 xyz
x -3.429 -1.219 0.000
y -1.219 2.877 0.000
z 0.000 0.000 0.552
Polar
3z2-r21.104
x2-y2-4.204
xy-1.219
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.537 0.288 0.000
y 0.288 3.435 0.000
z 0.000 0.000 2.367


<r2> (average value of r2) Å2
<r2> 46.546
(<r2>)1/2 6.822