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(T)/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 CCSD(T)/Def2TZVPP
 hartrees
Energy at 0K-261.649082
Energy at 298.15K 
HF Energy-260.644455
Nuclear repulsion energy163.154706
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)/Def2TZVPP
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 3292 3292        
2 A1 1455 1455        
3 A1 1337 1337        
4 A1 1063 1063        
5 A1 1022 1022        
6 A1 890 890        
7 A2 886 886        
8 A2 643 643        
9 B1 858 858        
10 B1 638 638        
11 B2 3278 3278        
12 B2 1565 1565        
13 B2 1200 1200        
14 B2 953 953        
15 B2 877 877        

Unscaled Zero Point Vibrational Energy (zpe) 9979.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9979.0 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 CCSD(T)/Def2TZVPP
ABC
0.34885 0.32314 0.16775

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/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 0.355
N3 0.000 -1.134 0.355
C4 0.000 0.712 -0.883
C5 0.000 -0.712 -0.883
H6 0.000 1.408 -1.704
H7 0.000 -1.408 -1.704

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37301.37302.13412.13413.16373.1637
N21.37302.26831.30822.22252.07763.2713
N31.37302.26832.22251.30823.27132.0776
C42.13411.30822.22251.42311.07662.2727
C52.13412.22251.30821.42312.27271.0766
H63.16372.07763.27131.07662.27272.8151
H73.16373.27132.07762.27271.07662.8151

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.464 O1 N3 C5 105.464
N2 O1 N3 111.383 N2 C4 C5 108.845
N2 C4 H6 120.882 N3 C5 C4 108.845
N3 C5 H7 120.882 C4 C5 H7 130.274
C5 C4 H6 130.274
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability