return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: CCSD=FULL/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=FULL/cc-pVDZ
 hartrees
Energy at 0K-261.366393
Energy at 298.15K 
HF Energy-260.563771
Nuclear repulsion energy163.065071
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3323 3323 0.76      
2 A1 1508 1508 14.33      
3 A1 1365 1365 4.60      
4 A1 1065 1065 4.80      
5 A1 1043 1043 13.69      
6 A1 913 913 24.59      
7 A2 903 903 0.00      
8 A2 651 651 0.00      
9 B1 869 869 33.84      
10 B1 648 648 0.73      
11 B2 3308 3308 0.08      
12 B2 1623 1623 0.11      
13 B2 1210 1210 3.83      
14 B2 971 971 20.98      
15 B2 938 938 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 10168.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10168.8 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=FULL/cc-pVDZ
ABC
0.34865 0.32245 0.16752

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.125
N2 0.000 1.131 0.359
N3 0.000 -1.131 0.359
C4 0.000 0.717 -0.884
C5 0.000 -0.717 -0.884
H6 0.000 1.423 -1.713
H7 0.000 -1.423 -1.713

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36621.36622.13302.13303.17433.1743
N21.36622.26271.31022.22782.09233.2889
N31.36622.26272.22781.31023.28892.0923
C42.13301.31022.22781.43481.08842.2951
C52.13302.22781.31021.43482.29511.0884
H63.17432.09233.28891.08842.29512.8457
H73.17433.28892.09232.29511.08842.8457

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.671 O1 N3 C5 105.671
N2 O1 N3 111.817 N2 C4 C5 108.420
N2 C4 H6 121.178 N3 C5 C4 108.420
N3 C5 H7 121.178 C4 C5 H7 130.402
C5 C4 H6 130.402
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability