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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: CCSD=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD=FULL/cc-pVDZ
 hartrees
Energy at 0K-225.592036
Energy at 298.15K-225.598008
HF Energy-224.833373
Nuclear repulsion energy162.376975
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=FULL/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 A' 3709 3709 71.38      
2 A' 3318 3318 1.43      
3 A' 3290 3290 1.04      
4 A' 3286 3286 5.29      
5 A' 1594 1594 11.80      
6 A' 1548 1548 18.73      
7 A' 1488 1488 15.65      
8 A' 1395 1395 7.07      
9 A' 1292 1292 0.63      
10 A' 1180 1180 6.97      
11 A' 1158 1158 2.07      
12 A' 1108 1108 16.07      
13 A' 1087 1087 33.13      
14 A' 943 943 1.88      
15 A' 908 908 6.71      
16 A" 871 871 2.00      
17 A" 840 840 30.62      
18 A" 740 740 34.59      
19 A" 683 683 3.58      
20 A" 645 645 12.04      
21 A" 490 490 89.71      

Unscaled Zero Point Vibrational Energy (zpe) 15785.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15785.6 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=FULL/cc-pVDZ
ABC
0.32343 0.30915 0.15807

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.110 0.000
C2 -1.090 0.282 0.000
C3 1.124 0.304 0.000
N4 -0.750 -0.993 0.000
C5 0.637 -0.987 0.000
H6 -0.015 2.121 0.000
H7 -2.109 0.667 0.000
H8 2.133 0.712 0.000
H9 1.209 -1.915 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36861.38342.23292.19211.01132.15512.16963.2576
C21.36862.21381.31962.14302.13051.08993.25083.1793
C31.38342.21382.27881.38002.14463.25361.08782.2204
N42.23291.31962.27881.38673.20002.14603.34862.1643
C52.19212.14301.38001.38673.17623.20622.26341.0895
H61.01132.13052.14463.20003.17622.54982.56874.2175
H72.15511.08993.25362.14603.20622.54984.24204.2042
H82.16963.25081.08783.34862.26342.56874.24202.7842
H93.25763.17932.22042.16431.08954.21754.20422.7842

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 112.310 N1 C2 H7 122.054
N1 C3 C5 104.985 N1 C3 H8 122.344
C2 N1 C3 107.110 C2 N1 H6 126.417
C2 N4 C5 104.691 C3 N1 H6 126.473
C3 C5 N4 110.904 C3 C5 H9 127.693
N4 C2 H7 125.636 N4 C5 H9 121.404
C5 C3 H8 132.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability