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: MP2/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2/cc-pVTZ
 hartrees
Energy at 0K-133.007237
Energy at 298.15K-133.011198
HF Energy-132.521490
Nuclear repulsion energy64.794504
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 MP2/cc-pVTZ
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' 3214 3052 3.50      
2 A' 3095 2938 4.63      
3 A' 3053 2899 13.70      
4 A' 2144 2035 104.86      
5 A' 1495 1419 13.49      
6 A' 1397 1326 4.83      
7 A' 1271 1207 4.49      
8 A' 1080 1026 11.53      
9 A' 937 890 1.76      
10 A' 442 419 22.50      
11 A" 3182 3021 4.43      
12 A" 1501 1426 9.54      
13 A" 1141 1084 1.54      
14 A" 799 759 7.34      
15 A" 215 204 2.42      

Unscaled Zero Point Vibrational Energy (zpe) 12482.8 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 11852.4 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 MP2/cc-pVTZ
ABC
1.93758 0.35516 0.31782

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.481 0.000
C2 -0.817 -0.783 0.000
N3 1.219 0.519 0.000
H4 -0.548 1.430 0.000
H5 -0.168 -1.652 0.000
H6 -1.456 -0.801 0.880
H7 -1.456 -0.801 -0.880

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.50461.21961.09622.13902.13002.1300
C21.50462.41692.22891.08471.08791.0879
N31.21962.41691.98802.57653.11033.1103
H41.09622.22891.98803.10502.56412.5641
H52.13901.08472.57653.10501.77721.7772
H62.13001.08793.11032.56411.77721.7606
H72.13001.08793.11032.56411.77721.7606

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 110.355 C1 C2 H6 109.443
C1 C2 H7 109.443 C2 C1 N3 124.721
C2 C1 H4 117.093 N3 C1 H4 118.186
H5 C2 H6 109.767 H5 C2 H7 109.767
H6 C2 H7 108.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability