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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: QCISD/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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-261.358986
Energy at 298.15K 
HF Energy-260.562813
Nuclear repulsion energy162.692173
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/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 3314 3180 0.65      
2 A1 1508 1447 13.44      
3 A1 1358 1303 5.91      
4 A1 1059 1016 2.96      
5 A1 1031 989 12.32      
6 A1 895 859 24.29      
7 A2 899 862 0.00      
8 A2 647 621 0.00      
9 B1 866 831 33.60      
10 B1 641 615 0.77      
11 B2 3299 3165 0.04      
12 B2 1619 1554 0.04      
13 B2 1206 1157 4.08      
14 B2 965 926 20.93      
15 B2 913 876 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 10109.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9699.1 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/cc-pVDZ
ABC
0.34764 0.32049 0.16675

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.128
N2 0.000 1.136 0.358
N3 0.000 -1.136 0.358
C4 0.000 0.719 -0.884
C5 0.000 -0.719 -0.884
H6 0.000 1.423 -1.716
H7 0.000 -1.423 -1.716

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37201.37202.13702.13703.18013.1801
N21.37202.27121.31082.23232.09383.2938
N31.37202.27122.23231.31083.29382.0938
C42.13701.31082.23231.43761.08962.2978
C52.13702.23231.31081.43762.29781.0896
H63.18012.09383.29381.08962.29782.8467
H73.18013.29382.09382.29781.08962.8467

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.591 O1 N3 C5 105.591
N2 O1 N3 111.733 N2 C4 C5 108.543
N2 C4 H6 121.170 N3 C5 C4 108.543
N3 C5 H7 121.170 C4 C5 H7 130.288
C5 C4 H6 130.288
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability