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All results from a given calculation for C4H6N2 (1H-Imidazole, 2-methyl-)

using model chemistry: HF/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-263.771179
Energy at 298.15K-263.779392
Nuclear repulsion energy224.757992
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/LANL2DZ
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 3948 3553 88.68      
2 A 3518 3165 7.84      
3 A 3490 3141 3.74      
4 A 3342 3007 12.23      
5 A 3276 2948 38.60      
6 A 3207 2886 45.81      
7 A 1752 1577 66.43      
8 A 1658 1492 5.34      
9 A 1640 1476 5.55      
10 A 1640 1476 14.31      
11 A 1577 1419 1.07      
12 A 1558 1402 49.94      
13 A 1493 1344 2.20      
14 A 1398 1258 24.72      
15 A 1261 1135 17.34      
16 A 1216 1094 3.47      
17 A 1198 1078 3.82      
18 A 1190 1071 33.25      
19 A 1099 989 17.75      
20 A 1062 956 8.14      
21 A 1023 920 4.97      
22 A 1017 915 1.83      
23 A 866 779 78.54      
24 A 763 687 22.27      
25 A 723 650 2.32      
26 A 715 643 152.71      
27 A 694 625 11.12      
28 A 371 334 6.86      
29 A 284 255 9.42      
30 A 93 84 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 23535.1 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 21179.2 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 HF/LANL2DZ
ABC
0.30025 0.11894 0.08655

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.120 -0.027 0.000
H2 2.502 0.481 0.879
H3 2.495 -1.039 -0.001
H4 2.502 0.483 -0.878
N5 -0.164 1.053 0.000
H6 0.154 1.992 -0.001
C7 0.627 -0.070 -0.000
N8 -0.117 -1.150 -0.000
C9 -1.443 -0.726 0.000
H10 -2.248 -1.422 0.000
C11 -1.491 0.636 0.000
H12 -2.310 1.316 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.08471.07901.08472.52702.81831.49432.50323.63134.58583.67204.6293
H21.08471.75631.75692.86522.92752.14323.20814.21825.19214.09194.9623
H31.07901.75631.75633.38353.82972.10492.61443.95074.75884.32415.3511
H41.08471.75691.75632.86452.92562.14323.20874.21865.19274.09164.9619
N52.52702.86523.38352.86450.99171.37332.20342.19083.23521.39082.1617
H62.81832.92753.82972.92560.99172.11533.15373.15264.17442.13202.5551
C71.49432.14322.10492.14321.37332.11531.31142.17123.17692.23253.2471
N82.50323.20812.61443.20872.20343.15371.31141.39232.14862.25383.3001
C93.63134.21823.95074.21862.19083.15262.17121.39231.06411.36312.2184
H104.58585.19214.75885.19273.23524.17443.17692.14861.06412.19282.7385
C113.67204.09194.32414.09161.39082.13202.23252.25381.36312.19281.0641
H124.62934.96235.35114.96192.16172.55513.24713.30012.21842.73851.0641

picture of 1H-Imidazole, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C7 N5 123.527 C1 C7 N8 126.177
H2 C1 H3 108.528 H2 C1 H4 108.170
H2 C1 C7 111.420 H3 C1 H4 108.529
H3 C1 C7 108.692 H4 C1 C7 111.421
N5 C7 N8 110.296 N5 C11 C9 105.403
N5 C11 H12 122.863 H6 N5 C7 126.105
H6 N5 C11 126.159 C7 N5 C11 107.736
C7 N8 C9 106.808 N8 C9 H10 121.437
N8 C9 C11 109.757 C9 C11 H12 131.735
H10 C9 C11 128.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.615      
2 H 0.189      
3 H 0.236      
4 H 0.189      
5 N -0.602      
6 H 0.378      
7 C 0.366      
8 N -0.268      
9 C -0.204      
10 H 0.227      
11 C -0.127      
12 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.547 4.108 -0.001 4.145
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.308 0.760 -0.001
y 0.760 -35.756 -0.004
z -0.001 -0.004 -39.179
Traceless
 xyz
x 7.159 0.760 -0.001
y 0.760 -1.013 -0.004
z -0.001 -0.004 -6.147
Polar
3z2-r2-12.293
x2-y25.448
xy0.760
xz-0.001
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.687 0.152 0.000
y 0.152 7.810 -0.000
z 0.000 -0.000 4.097


<r2> (average value of r2) Å2
<r2> 139.976
(<r2>)1/2 11.831