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: B1B95/aug-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 B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-261.996524
Energy at 298.15K 
HF Energy-261.996524
Nuclear repulsion energy164.566400
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 B1B95/aug-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 3311 3171 0.63 106.75 0.08 0.15
2 A1 1496 1433 13.55 20.36 0.21 0.35
3 A1 1369 1312 3.66 23.01 0.04 0.07
4 A1 1075 1029 20.92 4.23 0.49 0.66
5 A1 1067 1022 6.27 10.36 0.07 0.12
6 A1 930 890 18.48 3.81 0.11 0.20
7 A2 900 862 0.00 0.09 0.75 0.86
8 A2 662 634 0.00 0.11 0.75 0.86
9 B1 862 826 40.74 0.02 0.75 0.86
10 B1 664 636 1.47 0.27 0.75 0.86
11 B2 3295 3157 0.25 57.10 0.75 0.86
12 B2 1617 1549 0.00 0.08 0.75 0.86
13 B2 1198 1148 4.03 0.60 0.75 0.86
14 B2 970 929 15.65 2.89 0.75 0.86
15 B2 941 902 9.25 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10177.9 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 9749.4 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 B1B95/aug-cc-pVDZ
ABC
0.35426 0.32934 0.17067

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.114
N2 0.000 1.120 0.358
N3 0.000 -1.120 0.358
C4 0.000 0.708 -0.877
C5 0.000 -0.708 -0.877
H6 0.000 1.411 -1.700
H7 0.000 -1.411 -1.700

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.35161.35162.11372.11373.14833.1483
N21.35162.24031.30212.20642.07863.2621
N31.35162.24032.20641.30213.26212.0786
C42.11371.30212.20641.41621.08212.2731
C52.11372.20641.30211.41622.27311.0821
H63.14832.07863.26211.08212.27312.8215
H73.14833.26212.07862.27311.08212.8215

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 105.582 O1 N3 C5 105.582
N2 O1 N3 111.941 N2 C4 C5 108.447
N2 C4 H6 121.064 N3 C5 C4 108.447
N3 C5 H7 121.064 C4 C5 H7 130.490
C5 C4 H6 130.490
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.493      
2 N -0.195      
3 N -0.195      
4 C 0.759      
5 C 0.759      
6 H -0.317      
7 H -0.317      


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 -3.336 3.336
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.556 0.000 0.000
y 0.000 -29.915 0.000
z 0.000 0.000 -25.243
Traceless
 xyz
x -0.977 0.000 0.000
y 0.000 -3.015 0.000
z 0.000 0.000 3.992
Polar
3z2-r27.984
x2-y21.359
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.875 0.000 0.000
y 0.000 6.641 0.000
z 0.000 0.000 6.543


<r2> (average value of r2) Å2
<r2> 71.737
(<r2>)1/2 8.470