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

using model chemistry: MP3/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP3/cc-pVTZ
 hartrees
Energy at 0K-225.115623
Energy at 298.15K-225.120065
HF Energy-224.278363
Nuclear repulsion energy154.404408
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 MP3/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 3306 3123 0.05      
2 A1 3291 3109 14.91      
3 A1 1514 1430 30.90      
4 A1 1386 1309 75.22      
5 A1 1215 1148 47.75      
6 A1 1052 994 8.67      
7 A1 952 899 1.98      
8 A2 1007 952 0.00      
9 A2 606 573 0.00      
10 B1 967 913 1.59      
11 B1 878 829 16.14      
12 B1 553 523 37.62      
13 B2 3275 3093 0.00      
14 B2 1651 1560 43.89      
15 B2 1326 1253 0.11      
16 B2 1223 1155 26.40      
17 B2 1012 956 46.76      
18 B2 476 450 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 12844.7 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 12134.4 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 MP3/cc-pVTZ
ABC
0.36269 0.31134 0.16753

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.085
N2 0.000 1.159 0.368
N3 0.000 -1.159 0.368
C4 0.000 0.726 -0.865
C5 0.000 -0.726 -0.865
H6 0.000 0.000 2.161
H7 0.000 1.384 -1.718
H8 0.000 -1.384 -1.718

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36311.36312.08012.08011.07613.12573.1257
N21.36312.31861.30632.25232.13522.09773.2890
N31.36312.31862.25231.30632.13523.28902.0977
C42.08011.30632.25231.45183.11131.07752.2758
C52.08012.25231.30631.45183.11132.27581.0775
H61.07612.13522.13523.11133.11134.11824.1182
H73.12572.09773.28901.07752.27584.11822.7678
H83.12573.28902.09772.27581.07754.11822.7678

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 102.362 C1 N3 C5 102.362
N2 C1 N3 116.527 N2 C1 H6 121.736
N2 C4 C5 109.375 N2 C4 H7 122.988
N3 C1 H6 121.736 N3 C5 C4 109.375
N3 C5 H8 122.988 C4 C5 H8 127.637
C5 C4 H7 127.637
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability