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

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-224.930447
Energy at 298.15K-224.934899
HF Energy-224.219520
Nuclear repulsion energy151.908900
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 QCISD/cc-pVDZ
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 3274 3141 2.78      
2 A1 3261 3129 9.86      
3 A1 1488 1427 14.72      
4 A1 1321 1267 43.65      
5 A1 1159 1112 24.68      
6 A1 1000 959 1.74      
7 A1 915 878 4.16      
8 A2 879 843 0.00      
9 A2 567 544 0.00      
10 B1 858 824 0.61      
11 B1 771 740 21.34      
12 B1 528 506 28.36      
13 B2 3247 3115 1.35      
14 B2 1552 1489 16.71      
15 B2 1297 1245 0.00      
16 B2 1191 1142 5.04      
17 B2 1011 970 57.33      
18 B2 805 772 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 12561.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 12051.1 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 QCISD/cc-pVDZ
ABC
0.35197 0.30037 0.16206

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.100
N2 0.000 1.178 0.374
N3 0.000 -1.178 0.374
C4 0.000 0.743 -0.879
C5 0.000 -0.743 -0.879
H6 0.000 0.000 2.192
H7 0.000 1.416 -1.741
H8 0.000 -1.416 -1.741

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.38341.38342.11352.11351.09263.17433.1743
N21.38342.35511.32592.29292.16652.12853.3465
N31.38342.35512.29291.32592.16653.34652.1285
C42.11351.32592.29291.48593.15981.09392.3247
C52.11352.29291.32591.48593.15982.32471.0939
H61.09262.16652.16653.15983.15984.18074.1807
H73.17432.12853.34651.09392.32474.18072.8316
H83.17433.34652.12852.32471.09394.18072.8316

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 102.519 C1 N3 C5 102.519
N2 C1 N3 116.691 N2 C1 H6 121.654
N2 C4 C5 109.135 N2 C4 H7 122.907
N3 C1 H6 121.654 N3 C5 C4 109.135
N3 C5 H8 122.907 C4 C5 H8 127.958
C5 C4 H7 127.958
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability