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

using model chemistry: B2PLYP=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-31G*
 hartrees
Energy at 0K-225.982831
Energy at 298.15K-225.988755
HF Energy-225.741058
Nuclear repulsion energy163.046712
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 B2PLYP=FULL/6-31G*
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' 3676 3486 53.13      
2 A' 3324 3153 2.03      
3 A' 3299 3129 1.71      
4 A' 3295 3125 6.52      
5 A' 1578 1497 11.94      
6 A' 1530 1451 17.83      
7 A' 1466 1390 18.03      
8 A' 1391 1319 9.31      
9 A' 1301 1234 0.62      
10 A' 1178 1117 4.81      
11 A' 1169 1109 2.45      
12 A' 1117 1059 17.85      
13 A' 1092 1036 33.76      
14 A' 947 898 1.68      
15 A' 908 861 8.12      
16 A" 847 804 8.33      
17 A" 798 757 34.00      
18 A" 714 677 22.32      
19 A" 685 650 3.13      
20 A" 645 612 18.05      
21 A" 504 478 99.73      

Unscaled Zero Point Vibrational Energy (zpe) 15732.1 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 14920.3 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 B2PLYP=FULL/6-31G*
ABC
0.32537 0.31233 0.15936

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.105 0.000
C2 -1.090 0.282 0.000
C3 1.120 0.301 0.000
N4 -0.743 -0.988 0.000
C5 0.636 -0.983 0.000
H6 -0.009 2.114 0.000
H7 -2.101 0.662 0.000
H8 2.119 0.707 0.000
H9 1.198 -1.905 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36591.37932.22162.18301.00892.14722.15573.2399
C21.36592.21021.31692.13962.12701.08033.23663.1650
C31.37932.21022.26561.37212.13663.24141.07812.2069
N42.22161.31692.26561.37863.18812.13753.32632.1466
C52.18302.13961.37211.37863.16373.19322.24871.0799
H61.00892.12702.13663.18813.16372.54602.55114.1965
H72.14721.08033.24142.13753.19322.54604.21984.1803
H82.15573.23661.07813.32632.24872.55114.21982.7696
H93.23993.16502.20692.14661.07994.19654.18032.7696

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 111.794 N1 C2 H7 122.318
N1 C3 C5 105.011 N1 C3 H8 122.147
C2 N1 C3 107.239 C2 N1 H6 126.530
C2 N4 C5 105.053 C3 N1 H6 126.230
C3 C5 N4 110.902 C3 C5 H9 127.926
N4 C2 H7 125.888 N4 C5 H9 121.172
C5 C3 H8 132.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability