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

using model chemistry: CCSD/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/cc-pVDZ
 hartrees
Energy at 0K-225.580661
Energy at 298.15K-225.586622
HF Energy-224.833091
Nuclear repulsion energy162.259940
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-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' 3705 3510 71.13      
2 A' 3312 3137 1.48      
3 A' 3284 3111 1.01      
4 A' 3280 3107 5.39      
5 A' 1591 1508 11.66      
6 A' 1545 1463 18.76      
7 A' 1486 1407 15.78      
8 A' 1393 1319 7.05      
9 A' 1290 1222 0.61      
10 A' 1178 1116 7.09      
11 A' 1156 1095 2.04      
12 A' 1106 1048 15.79      
13 A' 1085 1028 33.23      
14 A' 942 892 1.87      
15 A' 907 859 6.69      
16 A" 867 821 2.13      
17 A" 837 793 31.06      
18 A" 737 698 34.26      
19 A" 681 645 3.66      
20 A" 643 609 12.10      
21 A" 485 459 89.37      

Unscaled Zero Point Vibrational Energy (zpe) 15754.0 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 14923.8 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-pVDZ
ABC
0.32299 0.30869 0.15784

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.111 0.000
C2 -1.090 0.282 0.000
C3 1.125 0.304 0.000
N4 -0.750 -0.994 0.000
C5 0.638 -0.988 0.000
H6 -0.015 2.123 0.000
H7 -2.111 0.668 0.000
H8 2.135 0.712 0.000
H9 1.210 -1.916 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36961.38442.23462.19351.01192.15672.17153.2599
C21.36962.21541.32052.14432.13201.09093.25333.1815
C31.38442.21542.28071.38092.14623.25601.08882.2219
N42.23461.32052.28071.38783.20232.14753.35142.1660
C52.19352.14431.38091.38783.17833.20842.26501.0904
H61.01192.13202.14623.20233.17832.55162.57084.2204
H72.15671.09093.25602.14753.20842.55164.24544.2073
H82.17153.25331.08883.35142.26502.57084.24542.7861
H93.25993.18152.22192.16601.09044.22044.20732.7861

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 112.326 N1 C2 H7 122.049
N1 C3 C5 104.978 N1 C3 H8 122.354
C2 N1 C3 107.105 C2 N1 H6 126.420
C2 N4 C5 104.672 C3 N1 H6 126.475
C3 C5 N4 110.920 C3 C5 H9 127.686
N4 C2 H7 125.625 N4 C5 H9 121.395
C5 C3 H8 132.668
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability