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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD(T)=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-261.748094
Energy at 298.15K 
HF Energy-260.644896
Nuclear repulsion energy163.287573
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(T)=FULL/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 A1 3292 3292        
2 A1 1457 1457        
3 A1 1338 1338        
4 A1 1063 1063        
5 A1 1022 1022        
6 A1 889 889        
7 A2 906 906        
8 A2 649 649        
9 B1 869 869        
10 B1 641 641        
11 B2 3279 3279        
12 B2 1567 1567        
13 B2 1203 1203        
14 B2 957 957        
15 B2 875 875        

Unscaled Zero Point Vibrational Energy (zpe) 10003.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10003.0 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(T)=FULL/Def2TZVPP
ABC
0.34964 0.32345 0.16802

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.129
N2 0.000 1.134 0.354
N3 0.000 -1.134 0.354
C4 0.000 0.711 -0.882
C5 0.000 -0.711 -0.882
H6 0.000 1.404 -1.702
H7 0.000 -1.404 -1.702

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37321.37322.13222.13223.16003.1600
N21.37322.26791.30602.22052.07403.2665
N31.37322.26792.22051.30603.26652.0740
C42.13221.30602.22051.42211.07422.2688
C52.13222.22051.30601.42212.26881.0742
H63.16002.07403.26651.07422.26882.8083
H73.16003.26652.07402.26881.07422.8083

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.444 O1 N3 C5 105.444
N2 O1 N3 111.326 N2 C4 C5 108.893
N2 C4 H6 120.925 N3 C5 C4 108.893
N3 C5 H7 120.925 C4 C5 H7 130.182
C5 C4 H6 130.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability