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/aug-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 B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-261.961171
Energy at 298.15K 
HF Energy-261.636930
Nuclear repulsion energy163.486042
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/aug-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 3295 3167 0.81 107.07 0.08 0.15
2 A1 1438 1382 19.45 15.65 0.34 0.51
3 A1 1335 1283 1.73 28.06 0.02 0.04
4 A1 1066 1024 0.76 4.59 0.20 0.33
5 A1 1025 985 14.55 8.14 0.11 0.20
6 A1 890 855 20.49 7.88 0.09 0.17
7 A2 915 879 0.00 0.02 0.75 0.86
8 A2 657 632 0.00 0.12 0.75 0.86
9 B1 866 832 40.07 0.06 0.75 0.86
10 B1 652 626 1.85 0.24 0.75 0.86
11 B2 3282 3154 0.49 55.80 0.75 0.86
12 B2 1557 1496 0.05 0.01 0.75 0.86
13 B2 1200 1153 4.46 0.47 0.75 0.86
14 B2 966 929 19.99 2.48 0.75 0.86
15 B2 842 809 2.52 0.45 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9992.3 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 9602.6 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/aug-cc-pVTZ
ABC
0.35000 0.32485 0.16848

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.128
N2 0.000 1.133 0.354
N3 0.000 -1.133 0.354
C4 0.000 0.707 -0.881
C5 0.000 -0.707 -0.881
H6 0.000 1.401 -1.702
H7 0.000 -1.401 -1.702

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.37171.37172.12982.12983.15783.1578
N21.37172.26531.30632.21622.07383.2630
N31.37172.26532.21621.30633.26302.0738
C42.12981.30632.21621.41481.07482.2625
C52.12982.21621.30631.41482.26251.0748
H63.15782.07383.26301.07482.26252.8015
H73.15783.26302.07382.26251.07482.8015

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.338 O1 N3 C5 105.338
N2 O1 N3 111.327 N2 C4 C5 108.998
N2 C4 H6 120.826 N3 C5 C4 108.998
N3 C5 H7 120.826 C4 C5 H7 130.176
C5 C4 H6 130.176
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.109      
2 N -0.355      
3 N -0.355      
4 C -0.164      
5 C -0.164      
6 H 0.574      
7 H 0.574      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.398 3.398
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.808 0.000 0.000
y 0.000 -30.419 0.000
z 0.000 0.000 -25.593
Traceless
 xyz
x -0.802 0.000 0.000
y 0.000 -3.219 0.000
z 0.000 0.000 4.021
Polar
3z2-r28.041
x2-y21.611
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.991 0.000 0.000
y 0.000 6.825 0.000
z 0.000 0.000 6.680


<r2> (average value of r2) Å2
<r2> 72.586
(<r2>)1/2 8.520