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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: CISD/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 CISD/cc-pVDZ
 hartrees
Energy at 0K-261.227457
Energy at 298.15K 
HF Energy-260.567972
Nuclear repulsion energy165.005799
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 CISD/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 3410 3143 1.16      
2 A1 1571 1448 12.47      
3 A1 1423 1311 5.04      
4 A1 1116 1029 31.93      
5 A1 1092 1006 1.92      
6 A1 971 895 26.20      
7 A2 961 886 0.00      
8 A2 684 631 0.00      
9 B1 916 844 34.41      
10 B1 682 629 1.00      
11 B2 3395 3129 0.13      
12 B2 1702 1569 0.03      
13 B2 1261 1162 3.62      
14 B2 1055 972 0.69      
15 B2 1011 932 24.72      

Unscaled Zero Point Vibrational Energy (zpe) 10623.5 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 9792.7 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 CISD/cc-pVDZ
ABC
0.35631 0.33050 0.17146

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.110
N2 0.000 1.114 0.358
N3 0.000 -1.114 0.358
C4 0.000 0.714 -0.875
C5 0.000 -0.714 -0.875
H6 0.000 1.418 -1.696
H7 0.000 -1.418 -1.696

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.34331.34332.10932.10933.14343.1434
N21.34332.22721.29682.20472.07663.2600
N31.34332.22722.20471.29683.26002.0766
C42.10931.29682.20471.42731.08132.2839
C52.10932.20471.29681.42732.28391.0813
H63.14342.07663.26001.08132.28392.8355
H73.14343.26002.07662.28391.08132.8355

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 106.040 O1 N3 C5 106.040
N2 O1 N3 111.991 N2 C4 C5 107.964
N2 C4 H6 121.407 N3 C5 C4 107.964
N3 C5 H7 121.407 C4 C5 H7 130.628
C5 C4 H6 130.628
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability