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

using model chemistry: MP4/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 MP4/cc-pVTZ
 hartrees
Energy at 0K-225.167892
Energy at 298.15K-225.172231
HF Energy-224.277039
Nuclear repulsion energy153.567994
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/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 3252 3152        
2 A1 3233 3134        
3 A1 1453 1408        
4 A1 1364 1322        
5 A1 1191 1154        
6 A1 1028 996        
7 A1 922 894        
8 A2 973 943        
9 A2 565 547        
10 B1 933 904        
11 B1 873 846        
12 B1 539 522        
13 B2 3220 3121        
14 B2 1614 1564        
15 B2 1300 1260        
16 B2 1212 1174        
17 B2 983 953        
18 B2 441 428        

Unscaled Zero Point Vibrational Energy (zpe) 12547.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 12160.7 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 MP4/cc-pVTZ
ABC
0.35898 0.30800 0.16577

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.089
N2 0.000 1.168 0.371
N3 0.000 -1.168 0.371
C4 0.000 0.725 -0.870
C5 0.000 -0.725 -0.870
H6 0.000 0.000 2.169
H7 0.000 1.388 -1.725
H8 0.000 -1.388 -1.725

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37141.37142.08892.08891.08063.13803.1380
N21.37142.33651.31732.26382.14502.10753.3057
N31.37142.33652.26381.31732.14503.30572.1075
C42.08891.31732.26381.45073.12481.08202.2799
C52.08892.26381.31731.45073.12482.27991.0820
H61.08062.14502.14503.12483.12484.13484.1348
H73.13802.10753.30571.08202.27994.13482.7758
H83.13803.30572.10752.27991.08204.13482.7758

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 101.939 C1 N3 C5 101.939
N2 C1 N3 116.828 N2 C1 H6 121.586
N2 C4 C5 109.647 N2 C4 H7 122.595
N3 C1 H6 121.586 N3 C5 C4 109.647
N3 C5 H8 122.595 C4 C5 H8 127.758
C5 C4 H7 127.758
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability