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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.517296
Energy at 298.15K-148.519727
HF Energy-147.957009
Nuclear repulsion energy60.140168
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/6-311+G(3df,2p)
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 3643 3474 26.00      
2 A 1274 1215 0.00      
3 A 952 908 8.27      
4 A 764 728 88.27      
5 A 541 516 0.04      
6 B 3641 3473 137.66      
7 B 2207 2105 698.60      
8 B 945 901 460.40      
9 B 544 519 80.10      

Unscaled Zero Point Vibrational Energy (zpe) 7254.7 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 6918.8 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 QCISD/6-311+G(3df,2p)
ABC
12.11421 0.34699 0.34698

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.015
N2 0.000 1.220 -0.080
N3 0.000 -1.220 -0.080
H4 0.629 1.738 0.517
H5 -0.629 -1.738 0.517

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22391.22391.91511.9151
N21.22392.44041.01013.0826
N31.22392.44043.08261.0101
H41.91511.01013.08263.6966
H51.91513.08261.01013.6966

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.694 C1 N3 H5 117.694
N2 C1 N3 171.037
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability