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All results from a given calculation for C3H3N2 (imidazolyl radical)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-224.920373
Energy at 298.15K-224.924679
HF Energy-224.200891
Nuclear repulsion energy153.126359
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 MP4/6-31G*
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 3262 3115        
2 A1 3249 3102        
3 A1 1493 1426        
4 A1 1381 1319        
5 A1 1193 1139        
6 A1 1052 1005        
7 A1 931 889        
8 A2 946 903        
9 A2 591 565        
10 B1 911 870        
11 B1 847 808        
12 B1 535 511        
13 B2 3239 3092        
14 B2 1635 1561        
15 B2 1316 1257        
16 B2 1218 1163        
17 B2 988 943        
18 B2 436 417        

Unscaled Zero Point Vibrational Energy (zpe) 12611.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12041.3 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 MP4/6-31G*
ABC
0.35716 0.30614 0.16484

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.092
N2 0.000 1.172 0.371
N3 0.000 -1.172 0.371
C4 0.000 0.727 -0.871
C5 0.000 -0.727 -0.871
H6 0.000 0.000 2.180
H7 0.000 1.393 -1.732
H8 0.000 -1.393 -1.732

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37621.37622.09382.09381.08763.14913.1491
N21.37622.34411.31952.26922.15542.11453.3170
N31.37622.34412.26921.31952.15543.31702.1145
C42.09381.31952.26921.45383.13661.08842.2881
C52.09382.26921.31951.45383.13662.28811.0884
H61.08762.15542.15543.13663.13664.15254.1525
H73.14912.11453.31701.08842.28814.15252.7863
H83.14913.31702.11452.28811.08844.15252.7863

picture of imidazolyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 101.897 C1 N3 C5 101.897
N2 C1 N3 116.779 N2 C1 H6 121.611
N2 C4 C5 109.714 N2 C4 H7 122.542
N3 C1 H6 121.611 N3 C5 C4 109.714
N3 C5 H8 122.542 C4 C5 H8 127.744
C5 C4 H7 127.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability