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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-148.415103
Energy at 298.15K-148.417541
HF Energy-147.924130
Nuclear repulsion energy59.510499
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=FULL/aug-cc-pVDZ
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 3594 3594 18.83      
2 A 1258 1258 0.01      
3 A 979 979 5.70      
4 A 784 784 82.15      
5 A 530 530 0.00      
6 B 3594 3594 111.19      
7 B 2178 2178 681.02      
8 B 975 975 433.00      
9 B 534 534 68.48      

Unscaled Zero Point Vibrational Energy (zpe) 7212.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7212.6 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=FULL/aug-cc-pVDZ
ABC
11.49380 0.34016 0.34009

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.017
N2 0.000 1.234 -0.083
N3 0.000 -1.234 -0.083
H4 0.643 1.733 0.531
H5 -0.643 -1.733 0.531

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23851.23851.91811.9181
N21.23852.46881.01903.0974
N31.23852.46883.09741.0190
H41.91811.01903.09743.6963
H51.91813.09741.01903.6963

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.011 C1 N3 H5 116.011
N2 C1 N3 170.692
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability