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

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-224.860319
Energy at 298.15K-224.866522
HF Energy-224.860319
Nuclear repulsion energy165.062637
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 HF/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' 3945 3568 74.50      
2 A' 3446 3117 6.26      
3 A' 3417 3090 1.16      
4 A' 3415 3088 16.04      
5 A' 1734 1568 26.21      
6 A' 1654 1496 26.52      
7 A' 1584 1432 23.05      
8 A' 1490 1348 9.55      
9 A' 1404 1270 0.77      
10 A' 1249 1130 4.86      
11 A' 1226 1109 4.58      
12 A' 1180 1067 15.55      
13 A' 1150 1040 59.04      
14 A' 1023 925 1.99      
15 A' 986 892 7.67      
16 A" 991 896 0.09      
17 A" 960 868 21.35      
18 A" 827 748 55.41      
19 A" 732 662 13.76      
20 A" 692 626 5.97      
21 A" 533 482 137.51      

Unscaled Zero Point Vibrational Energy (zpe) 16818.6 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 15210.7 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 HF/6-311G*
ABC
0.33145 0.32184 0.16329

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.095 0.000
C2 -1.074 0.279 0.000
C3 1.110 0.288 0.000
N4 -0.741 -0.965 0.000
C5 0.630 -0.974 0.000
H6 -0.012 2.084 0.000
H7 -2.077 0.655 0.000
H8 2.103 0.680 0.000
H9 1.181 -1.891 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.34901.37202.18922.16270.98942.12292.14373.2110
C21.34902.18351.28732.11462.09461.07103.20253.1291
C31.37202.18352.23491.34992.11793.20731.06842.1801
N42.18921.28732.23491.37113.13512.09913.28602.1335
C52.16272.11461.34991.37113.12493.15882.21521.0699
H60.98942.09462.11793.13513.12492.51122.53914.1505
H72.12291.07103.20732.09913.15882.51124.18014.1342
H82.14373.20251.06843.28602.21522.53914.18012.7317
H93.21103.12912.18012.13351.06994.15054.13422.7317

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 112.263 N1 C2 H7 122.208
N1 C3 C5 105.219 N1 C3 H8 122.423
C2 N1 C3 106.726 C2 N1 H6 126.528
C2 N4 C5 105.353 C3 N1 H6 126.746
C3 C5 N4 110.438 C3 C5 H9 128.192
N4 C2 H7 125.529 N4 C5 H9 121.370
C5 C3 H8 132.358
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.593      
2 C 0.151      
3 C -0.086      
4 N -0.389      
5 C -0.159      
6 H 0.381      
7 H 0.235      
8 H 0.240      
9 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.098 3.722 0.000 3.881
CHELPG        
AIM        
ESP 1.086 3.688 0.000 3.845


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.253 -3.513 0.000
y -3.513 -25.482 0.000
z 0.000 0.000 -32.144
Traceless
 xyz
x 2.560 -3.513 0.000
y -3.513 3.717 0.000
z 0.000 0.000 -6.277
Polar
3z2-r2-12.553
x2-y2-0.771
xy-3.513
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.699 -0.105 0.000
y -0.105 6.645 0.000
z 0.000 0.000 3.213


<r2> (average value of r2) Å2
<r2> 78.503
(<r2>)1/2 8.860