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: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/Def2TZVPP
 hartrees
Energy at 0K-261.988476
Energy at 298.15K 
HF Energy-261.644089
Nuclear repulsion energy163.722559
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 B2PLYP=FULLultrafine/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 3300 3300 0.67 103.65 0.09 0.16
2 A1 1441 1441 18.83 15.25 0.37 0.55
3 A1 1339 1339 1.71 22.38 0.04 0.07
4 A1 1068 1068 0.71 4.74 0.25 0.40
5 A1 1033 1033 14.98 6.70 0.20 0.34
6 A1 899 899 20.66 7.34 0.12 0.21
7 A2 915 915 0.00 0.57 0.75 0.86
8 A2 660 660 0.00 0.05 0.75 0.86
9 B1 868 868 40.09 0.00 0.75 0.86
10 B1 656 656 1.95 0.23 0.75 0.86
11 B2 3287 3287 0.35 54.53 0.75 0.86
12 B2 1560 1560 0.08 0.01 0.75 0.86
13 B2 1204 1204 4.70 0.48 0.75 0.86
14 B2 969 969 20.54 3.86 0.75 0.86
15 B2 856 856 3.04 0.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10026.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10026.4 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 B2PLYP=FULLultrafine/Def2TZVPP
ABC
0.35081 0.32595 0.16896

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.126
N2 0.000 1.130 0.354
N3 0.000 -1.130 0.354
C4 0.000 0.707 -0.880
C5 0.000 -0.707 -0.880
H6 0.000 1.401 -1.700
H7 0.000 -1.401 -1.700

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.36811.36812.12702.12703.15413.1541
N21.36812.26021.30542.21362.07273.2600
N31.36812.26022.21361.30543.26002.0727
C42.12701.30542.21361.41401.07412.2616
C52.12702.21361.30541.41402.26161.0741
H63.15412.07273.26001.07412.26162.8014
H73.15413.26002.07272.26161.07412.8014

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.392 O1 N3 C5 105.392
N2 O1 N3 111.388 N2 C4 C5 108.914
N2 C4 H6 120.856 N3 C5 C4 108.914
N3 C5 H7 120.856 C4 C5 H7 130.231
C5 C4 H6 130.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability