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

using model chemistry: MP2=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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-225.541173
Energy at 298.15K-225.547092
HF Energy-224.811393
Nuclear repulsion energy162.989393
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 MP2=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' 3673 3461 71.73      
2 A' 3336 3143 0.93      
3 A' 3312 3121 0.93      
4 A' 3308 3117 4.14      
5 A' 1570 1480 8.69      
6 A' 1538 1449 19.03      
7 A' 1496 1410 20.11      
8 A' 1402 1321 11.25      
9 A' 1303 1228 0.92      
10 A' 1202 1133 3.39      
11 A' 1180 1111 2.81      
12 A' 1130 1065 23.86      
13 A' 1107 1043 26.74      
14 A' 946 891 1.93      
15 A' 906 854 7.44      
16 A" 819 772 20.49      
17 A" 772 727 42.07      
18 A" 693 653 11.96      
19 A" 686 647 1.78      
20 A" 641 604 37.24      
21 A" 527 496 87.30      

Unscaled Zero Point Vibrational Energy (zpe) 15773.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 14861.7 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 MP2=FULL/6-31G*
ABC
0.32585 0.31157 0.15928

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.103 0.000
C2 -1.091 0.284 0.000
C3 1.119 0.306 0.000
N4 -0.740 -0.993 0.000
C5 0.635 -0.983 0.000
H6 -0.010 2.115 0.000
H7 -2.103 0.663 0.000
H8 2.118 0.714 0.000
H9 1.202 -1.904 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36451.37422.22332.18071.01192.14902.15393.2383
C21.36452.20961.32362.14042.12671.08163.23773.1684
C31.37422.20962.26781.37632.13313.24201.07962.2107
N42.22331.32362.26781.37533.19292.14493.32942.1450
C52.18072.14041.37631.37533.16463.19502.25361.0813
H61.01192.12672.13313.19293.16462.54762.54874.1977
H72.14901.08163.24202.14493.19502.54764.22214.1848
H82.15393.23771.07963.32942.25362.54874.22212.7732
H93.23833.16842.21072.14501.08134.19774.18482.7732

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 111.588 N1 C2 H7 122.516
N1 C3 C5 104.910 N1 C3 H8 122.296
C2 N1 C3 107.571 C2 N1 H6 126.353
C2 N4 C5 104.926 C3 N1 H6 126.076
C3 C5 N4 111.006 C3 C5 H9 127.801
N4 C2 H7 125.896 N4 C5 H9 121.194
C5 C3 H8 132.794
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability