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

using model chemistry: ROMP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at ROMP2/6-311G*
 hartrees
Energy at 0K-225.598959
Energy at 298.15K-225.604866
HF Energy-224.856815
Nuclear repulsion energy162.875914
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 ROMP2/6-311G*
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' 3699 3699        
2 A' 3309 3309        
3 A' 3287 3287        
4 A' 3282 3282        
5 A' 1550 1550        
6 A' 1517 1517        
7 A' 1482 1482        
8 A' 1378 1378        
9 A' 1282 1282        
10 A' 1194 1194        
11 A' 1165 1165        
12 A' 1114 1114        
13 A' 1093 1093        
14 A' 942 942        
15 A' 903 903        
16 A" 808 808        
17 A" 771 771        
18 A" 684 684        
19 A" 679 679        
20 A" 641 641        
21 A" 513 513        

Unscaled Zero Point Vibrational Energy (zpe) 15647.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15647.2 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 ROMP2/6-311G*
ABC
0.32585 0.31053 0.15900

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.105 0.000
C2 -1.090 0.283 0.000
C3 1.120 0.308 0.000
N4 -0.741 -0.994 0.000
C5 0.634 -0.985 0.000
H6 -0.009 2.113 0.000
H7 -2.103 0.662 0.000
H8 2.120 0.714 0.000
H9 1.201 -1.906 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36571.37462.22662.18451.00752.14952.15563.2418
C21.36572.21011.32402.14072.12541.08133.23903.1686
C31.37462.21012.27111.38092.12893.24211.07972.2153
N42.22661.32402.27111.37563.19212.14393.33242.1453
C52.18452.14071.38091.37563.16403.19462.25711.0811
H61.00752.12542.12893.19213.16402.54782.54734.1969
H72.14951.08133.24212.14393.19462.54784.22344.1842
H82.15563.23901.07973.33242.25712.54734.22342.7767
H93.24183.16862.21532.14531.08114.19694.18422.7767

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 111.737 N1 C2 H7 122.482
N1 C3 C5 104.892 N1 C3 H8 122.422
C2 N1 C3 107.512 C2 N1 H6 126.503
C2 N4 C5 104.906 C3 N1 H6 125.986
C3 C5 N4 110.954 C3 C5 H9 127.836
N4 C2 H7 125.781 N4 C5 H9 121.210
C5 C3 H8 132.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.591      
2 C 0.141      
3 C -0.091      
4 N -0.389      
5 C -0.153      
6 H 0.383      
7 H 0.240      
8 H 0.240      
9 H 0.220      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 80.176
(<r2>)1/2 8.954