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

using model chemistry: CCSD(T)/6-311G*

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(T)/6-311G*
 hartrees
Energy at 0K-225.652299
Energy at 298.15K-225.658140
HF Energy-224.856282
Nuclear repulsion energy162.408116
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(T)/6-311G*
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' 3680 3543        
2 A' 3262 3140        
3 A' 3239 3118        
4 A' 3233 3112        
5 A' 1560 1502        
6 A' 1514 1458        
7 A' 1464 1409        
8 A' 1364 1313        
9 A' 1278 1230        
10 A' 1158 1115        
11 A' 1156 1113        
12 A' 1102 1060        
13 A' 1079 1039        
14 A' 938 902        
15 A' 902 869        
16 A" 803 773        
17 A" 790 761        
18 A" 681 655        
19 A" 666 641        
20 A" 626 603        
21 A" 458 440        

Unscaled Zero Point Vibrational Energy (zpe) 15475.9 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 14897.1 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 CCSD(T)/6-311G*
ABC
0.32335 0.30927 0.15808

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.110 0.000
C2 -1.092 0.282 0.000
C3 1.125 0.304 0.000
N4 -0.749 -0.993 0.000
C5 0.638 -0.986 0.000
H6 -0.010 2.118 0.000
H7 -2.108 0.663 0.000
H8 2.129 0.710 0.000
H9 1.203 -1.912 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37011.38412.23302.19151.00802.15472.16643.2529
C21.37012.21671.32092.14502.13071.08493.24893.1748
C31.38412.21672.27891.37882.14043.25251.08292.2173
N42.23301.32092.27891.38703.19802.14213.34392.1569
C52.19152.14501.37881.38703.17153.20282.25791.0845
H61.00802.13072.14043.19803.17152.55302.56164.2090
H72.15471.08493.25252.14213.20282.55304.23704.1938
H82.16643.24891.08293.34392.25792.56164.23702.7805
H93.25293.17482.21732.15691.08454.20904.19382.7805

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 112.136 N1 C2 H7 122.301
N1 C3 C5 104.963 N1 C3 H8 122.364
C2 N1 C3 107.183 C2 N1 H6 126.589
C2 N4 C5 104.747 C3 N1 H6 126.228
C3 C5 N4 110.970 C3 C5 H9 127.956
N4 C2 H7 125.563 N4 C5 H9 121.074
C5 C3 H8 132.673
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability