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: CCSD(T)/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 CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-133.069710
Energy at 298.15K-133.073703
HF Energy-132.522312
Nuclear repulsion energy63.961434
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 CCSD(T)/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' 3156 3076        
2 A' 3058 2980        
3 A' 3008 2933        
4 A' 1723 1680        
5 A' 1492 1455        
6 A' 1380 1346        
7 A' 1251 1220        
8 A' 1062 1035        
9 A' 923 899        
10 A' 434 423        
11 A" 3123 3044        
12 A" 1498 1461        
13 A" 1078 1051        
14 A" 747 729        
15 A" 271 264        

Unscaled Zero Point Vibrational Energy (zpe) 12102.2 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 11797.3 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 CCSD(T)/cc-pVTZ
ABC
1.88271 0.34701 0.30995

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.488 0.000
C2 -0.844 -0.769 0.000
N3 1.253 0.494 0.000
H4 -0.529 1.450 0.000
H5 -0.208 -1.653 0.000
H6 -1.485 -0.783 0.883
H7 -1.485 -0.783 -0.883

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.51411.25301.09832.15052.14462.1446
C21.51412.44812.24171.08871.09151.0915
N31.25302.44812.02262.59643.14743.1474
H41.09832.24172.02263.11952.58452.5845
H52.15051.08872.59643.11951.78001.7800
H62.14461.09153.14742.58451.78001.7670
H72.14461.09153.14742.58451.78001.7670

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 110.356 C1 C2 H6 109.722
C1 C2 H7 109.722 C2 C1 N3 124.156
C2 C1 H4 117.318 N3 C1 H4 118.526
H5 C2 H6 109.462 H5 C2 H7 109.462
H6 C2 H7 108.078
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability