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 HNCNH (diiminomethane)

using model chemistry: MP3=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP3=FULL/6-31G**
 hartrees
Energy at 0K-148.374617
Energy at 298.15K-148.377036
HF Energy-147.902530
Nuclear repulsion energy60.019755
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 MP3=FULL/6-31G**
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 3713 3713 20.68      
2 A 1312 1312 0.03      
3 A 972 972 6.80      
4 A 820 820 103.53      
5 A 518 518 0.06      
6 B 3713 3713 95.10      
7 B 2278 2278 600.04      
8 B 968 968 479.07      
9 B 520 520 81.36      

Unscaled Zero Point Vibrational Energy (zpe) 7406.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7406.7 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 MP3=FULL/6-31G**
ABC
11.94194 0.34556 0.34550

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.014
N2 0.000 1.224 -0.080
N3 0.000 -1.224 -0.080
H4 0.635 1.728 0.519
H5 -0.635 -1.728 0.519

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22761.22761.90941.9094
N21.22762.44801.00883.0789
N31.22762.44803.07891.0088
H41.90941.00883.07893.6829
H51.90943.07891.00883.6829

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.912 C1 N3 H5 116.912
N2 C1 N3 171.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability