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All results from a given calculation for C3H3N2 (imidazolyl radical)

using model chemistry: B1B95/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at B1B95/cc-pVDZ
 hartrees
Energy at 0K-225.484098
Energy at 298.15K-225.488551
HF Energy-225.484098
Nuclear repulsion energy153.482063
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 B1B95/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3256 3130 0.55      
2 A1 3250 3124 13.62      
3 A1 1493 1435 25.36      
4 A1 1322 1271 48.61      
5 A1 1196 1149 25.58      
6 A1 1004 965 1.93      
7 A1 916 881 4.81      
8 A2 893 858 0.00      
9 A2 564 542 0.00      
10 B1 887 853 0.19      
11 B1 760 731 19.72      
12 B1 507 488 26.19      
13 B2 3236 3110 0.89      
14 B2 1560 1500 22.76      
15 B2 1285 1235 0.07      
16 B2 1192 1146 3.35      
17 B2 1042 1002 78.80      
18 B2 807 776 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 12585.7 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 12097.4 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 B1B95/cc-pVDZ
ABC
0.35901 0.30717 0.16554

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.086
N2 0.000 1.165 0.372
N3 0.000 -1.165 0.372
C4 0.000 0.734 -0.870
C5 0.000 -0.734 -0.870
H6 0.000 0.000 2.175
H7 0.000 1.405 -1.728
H8 0.000 -1.405 -1.728

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36641.36642.08942.08941.08883.14523.1452
N21.36642.32921.31432.26822.14692.11293.3182
N31.36642.32922.26821.31432.14693.31822.1129
C42.08941.31432.26821.46713.13231.08922.3043
C52.08942.26821.31431.46713.13232.30431.0892
H61.08882.14692.14693.13233.13234.14804.1480
H73.14522.11293.31821.08922.30434.14802.8105
H83.14523.31822.11292.30431.08924.14802.8105

picture of imidazolyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 102.392 C1 N3 C5 102.392
N2 C1 N3 116.925 N2 C1 H6 121.538
N2 C4 C5 109.146 N2 C4 H7 122.782
N3 C1 H6 121.538 N3 C5 C4 109.146
N3 C5 H8 122.782 C4 C5 H8 128.072
C5 C4 H7 128.072
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.204      
2 N -0.221      
3 N -0.221      
4 C 0.073      
5 C 0.073      
6 H 0.039      
7 H 0.027      
8 H 0.027      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.538 1.538
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.817 0.000 0.000
y 0.000 -33.557 0.000
z 0.000 0.000 -22.275
Traceless
 xyz
x -0.901 0.000 0.000
y 0.000 -8.011 0.000
z 0.000 0.000 8.912
Polar
3z2-r217.824
x2-y24.740
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.860 0.000 0.000
y 0.000 5.902 0.000
z 0.000 0.000 7.403


<r2> (average value of r2) Å2
<r2> 75.816
(<r2>)1/2 8.707