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All results from a given calculation for C2H2N2O (Furazan)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-259.623129
Energy at 298.15K 
HF Energy-259.051902
Nuclear repulsion energy156.520845
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 MP2=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3324 3151 3.46 83.94 0.10 0.18
2 A1 1341 1271 27.08 11.02 0.74 0.85
3 A1 1123 1064 11.55 17.82 0.19 0.32
4 A1 1073 1017 0.65 4.05 0.33 0.50
5 A1 930 881 2.44 3.50 0.64 0.78
6 A1 825 782 6.84 5.92 0.12 0.21
7 A2 879 833 0.00 1.63 0.75 0.86
8 A2 641 608 0.00 0.75 0.75 0.86
9 B1 853 809 52.36 1.79 0.75 0.86
10 B1 590 559 0.75 0.26 0.75 0.86
11 B2 3305 3134 0.13 50.32 0.75 0.86
12 B2 1402 1329 13.83 0.48 0.75 0.86
13 B2 1154 1094 3.05 0.00 0.75 0.86
14 B2 959 909 10.92 4.63 0.75 0.86
15 B2 789 748 0.07 0.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9593.5 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 9094.7 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 MP2=FULL/3-21G*
ABC
0.32224 0.29664 0.15446

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.200
N2 0.000 1.208 0.346
N3 0.000 -1.208 0.346
C4 0.000 0.711 -0.910
C5 0.000 -0.711 -0.910
H6 0.000 1.378 -1.756
H7 0.000 -1.378 -1.756

Atom - Atom Distances (Å)
  O1 N2 N3 C4 C5 H6 H7
O11.47951.47952.22672.22673.26173.2617
N21.47952.41631.35122.29352.10903.3329
N31.47952.41632.29351.35123.33292.1090
C42.22671.35122.29351.42141.07752.2536
C52.22672.29351.35121.42142.25361.0775
H63.26172.10903.33291.07752.25362.7563
H73.26173.33292.10902.25361.07752.7563

picture of Furazan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C4 103.652 O1 N3 C5 103.652
N2 O1 N3 109.488 N2 C4 C5 111.604
N2 C4 H6 120.121 N3 C5 C4 111.604
N3 C5 H7 120.121 C4 C5 H7 128.275
C5 C4 H6 128.275
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability