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

using model chemistry: CCSD/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 CCSD/cc-pVTZ
 hartrees
Energy at 0K-225.125411
Energy at 298.15K-225.129911
HF Energy-224.277991
Nuclear repulsion energy153.385236
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 CCSD/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 3276 3083 1.30      
2 A1 3263 3072 9.11      
3 A1 1489 1402 14.61      
4 A1 1336 1257 51.29      
5 A1 1174 1105 26.41      
6 A1 1011 951 1.63      
7 A1 927 873 3.23      
8 A2 912 858 0.00      
9 A2 575 541 0.00      
10 B1 889 837 0.36      
11 B1 794 748 22.46      
12 B1 538 506 30.85      
13 B2 3250 3059 0.44      
14 B2 1562 1470 18.40      
15 B2 1314 1237 0.01      
16 B2 1203 1132 7.68      
17 B2 1020 960 59.58      
18 B2 787 741 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 12660.3 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 11915.8 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 CCSD/cc-pVTZ
ABC
0.35756 0.30715 0.16522

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.093
N2 0.000 1.164 0.370
N3 0.000 -1.164 0.370
C4 0.000 0.736 -0.872
C5 0.000 -0.736 -0.872
H6 0.000 0.000 2.171
H7 0.000 1.399 -1.723
H8 0.000 -1.399 -1.723

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37071.37072.09872.09871.07763.14463.1446
N21.37072.32831.31402.26972.14462.10603.3088
N31.37072.32832.26971.31402.14463.30882.1060
C42.09871.31402.26971.47113.13081.07872.2976
C52.09872.26971.31401.47113.13082.29761.0787
H61.07762.14462.14463.13083.13084.13764.1376
H73.14462.10603.30881.07872.29764.13762.7975
H83.14463.30882.10602.29761.07874.13762.7975

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 102.823 C1 N3 C5 102.823
N2 C1 N3 116.277 N2 C1 H6 121.861
N2 C4 C5 109.039 N2 C4 H7 123.024
N3 C1 H6 121.861 N3 C5 C4 109.039
N3 C5 H8 123.024 C4 C5 H8 127.937
C5 C4 H7 127.937
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability