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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-224.880013
Energy at 298.15K 
HF Energy-224.201180
Nuclear repulsion energy154.166384
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/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 3312 3120 0.01      
2 A1 3302 3111 21.44      
3 A1 1513 1425 59.51      
4 A1 1419 1337 79.16      
5 A1 1236 1165 56.75      
6 A1 1089 1026 22.46      
7 A1 947 893 2.13      
8 A2 1001 943 0.00      
9 A2 610 574 0.00      
10 B1 963 907 3.66      
11 B1 891 839 10.85      
12 B1 536 505 44.60      
13 B2 3285 3095 0.01      
14 B2 1689 1591 54.28      
15 B2 1335 1258 0.09      
16 B2 1241 1169 40.76      
17 B2 1001 943 47.57      
18 B2 288i 272i 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 12539.5 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 11814.7 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/6-31G*
ABC
0.36157 0.31098 0.16719

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.084
N2 0.000 1.165 0.370
N3 0.000 -1.165 0.370
C4 0.000 0.718 -0.866
C5 0.000 -0.718 -0.866
H6 0.000 0.000 2.167
H7 0.000 1.381 -1.724
H8 0.000 -1.381 -1.724

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36611.36612.07772.07771.08373.12923.1292
N21.36612.32941.31402.25202.14202.10513.2963
N31.36612.32942.25201.31402.14203.29632.1051
C42.07771.31402.25201.43613.11731.08452.2677
C52.07772.25201.31401.43613.11732.26771.0845
H61.08372.14202.14203.11733.11734.12944.1294
H73.12922.10513.29631.08452.26774.12942.7620
H83.12923.29632.10512.26771.08454.12942.7620

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 101.637 C1 N3 C5 101.637
N2 C1 N3 116.982 N2 C1 H6 121.509
N2 C4 C5 109.872 N2 C4 H7 122.442
N3 C1 H6 121.509 N3 C5 C4 109.872
N3 C5 H8 122.442 C4 C5 H8 127.686
C5 C4 H7 127.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability