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 H2CNCH (methyleneaminomethylene)

using model chemistry: QCISD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/Def2TZVPP
 hartrees
Energy at 0K-132.411180
Energy at 298.15K-132.413695
HF Energy-131.872340
Nuclear repulsion energy61.091172
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 QCISD/Def2TZVPP
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' 3180 3180 2.54      
2 A' 3113 3113 11.33      
3 A' 1978 1978 240.99      
4 A' 1530 1530 1.72      
5 A' 1224 1224 13.37      
6 A' 934 934 403.61      
7 A' 761 761 74.82      
8 A' 479 479 31.63      
9 A" 3291 3291 1.31      
10 A" 1165 1165 8.47      
11 A" 969 969 9.92      
12 A" 336 336 3.99      

Unscaled Zero Point Vibrational Energy (zpe) 9480.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9480.1 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 QCISD/Def2TZVPP
ABC
6.50360 0.35270 0.34564

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.133 -1.170 0.000
N2 0.000 0.098 0.000
C3 -0.287 1.289 0.000
H4 0.187 -1.695 0.941
H5 0.187 -1.695 -0.941
H6 0.547 1.991 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.27562.49471.07871.07873.1887
N21.27561.22452.03392.03391.9706
C32.49471.22453.16443.16441.0907
H41.07872.03393.16441.88173.8218
H51.07872.03393.16441.88173.8218
H63.18871.97061.09073.82183.8218

picture of methyleneaminomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 172.451 N2 C1 H4 119.284
N2 C1 H5 119.284 N2 C3 H6 116.558
H4 C1 H5 121.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability