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-pVTZ

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-pVTZ
 hartrees
Energy at 0K-261.661387
Energy at 298.15K 
HF Energy-260.639049
Nuclear repulsion energy164.821428
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-pVTZ
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 3338 3164 0.54      
2 A1 1519 1440 15.07      
3 A1 1386 1314 4.45      
4 A1 1081 1025 3.06      
5 A1 1062 1007 19.79      
6 A1 931 883 22.81      
7 A2 958 908 0.00      
8 A2 671 637 0.00      
9 B1 904 857 37.09      
10 B1 661 627 1.72      
11 B2 3320 3147 0.11      
12 B2 1639 1554 0.15      
13 B2 1242 1178 3.67      
14 B2 983 932 21.35      
15 B2 967 917 1.20      

Unscaled Zero Point Vibrational Energy (zpe) 10330.5 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 9794.4 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-pVTZ
ABC
0.35551 0.33001 0.17114

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.118
N2 0.000 1.119 0.353
N3 0.000 -1.119 0.353
C4 0.000 0.709 -0.874
C5 0.000 -0.709 -0.874
H6 0.000 1.397 -1.692
H7 0.000 -1.397 -1.692

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.35581.35582.11422.11423.13793.1379
N21.35582.23881.29402.20172.06353.2426
N31.35582.23882.20171.29403.24262.0635
C42.11421.29402.20171.41731.06902.2592
C52.11422.20171.29401.41732.25921.0690
H63.13792.06353.24261.06902.25922.7946
H73.13793.24262.06352.25921.06902.7946

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.837 O1 N3 C5 105.837
N2 O1 N3 111.311 N2 C4 C5 108.508
N2 C4 H6 121.388 N3 C5 C4 108.508
N3 C5 H7 121.388 C4 C5 H7 130.105
C5 C4 H6 130.105
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability