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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: CCSD(T)/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)/cc-pVDZ
 hartrees
Energy at 0K-261.391625
Energy at 298.15K 
HF Energy-260.560023
Nuclear repulsion energy162.021237
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-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 A1 3296 3226        
2 A1 1461 1430        
3 A1 1331 1303        
4 A1 1051 1029        
5 A1 1015 993        
6 A1 883 864        
7 A2 868 850        
8 A2 635 621        
9 B1 842 824        
10 B1 634 620        
11 B2 3281 3211        
12 B2 1567 1534        
13 B2 1183 1158        
14 B2 952 932        
15 B2 859 841        

Unscaled Zero Point Vibrational Energy (zpe) 9928.3 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 9717.8 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 CCSD(T)/cc-pVDZ
ABC
0.34435 0.31839 0.16543

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.133
N2 0.000 1.141 0.361
N3 0.000 -1.141 0.361
C4 0.000 0.718 -0.889
C5 0.000 -0.718 -0.889
H6 0.000 1.424 -1.721
H7 0.000 -1.424 -1.721

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37771.37772.14552.14553.18933.1893
N21.37772.28301.32022.24072.10153.3041
N31.37772.28302.24071.32023.30412.1015
C42.14551.32022.24071.43581.09112.2977
C52.14552.24071.32021.43582.29771.0911
H63.18932.10153.30411.09112.29772.8477
H73.18933.30412.10152.29771.09112.8477

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.338 O1 N3 C5 105.338
N2 O1 N3 111.896 N2 C4 C5 108.714
N2 C4 H6 120.968 N3 C5 C4 108.714
N3 C5 H7 120.968 C4 C5 H7 130.317
C5 C4 H6 130.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability