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

using model chemistry: B1B95/TZVP

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/TZVP
 hartrees
Energy at 0K-225.533892
Energy at 298.15K-225.538334
HF Energy-225.533892
Nuclear repulsion energy154.088779
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/TZVP
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 3261 3120 1.09      
2 A1 3252 3111 11.62      
3 A1 1473 1410 25.06      
4 A1 1332 1274 55.67      
5 A1 1190 1139 27.71      
6 A1 1002 959 1.75      
7 A1 925 885 2.95      
8 A2 869 832 0.00      
9 A2 560 536 0.00      
10 B1 873 835 0.00      
11 B1 761 728 25.45      
12 B1 508 486 27.85      
13 B2 3238 3099 0.35      
14 B2 1554 1487 23.13      
15 B2 1305 1249 0.01      
16 B2 1205 1153 6.49      
17 B2 1032 988 77.78      
18 B2 798 763 1.02      

Unscaled Zero Point Vibrational Energy (zpe) 12568.7 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 12027.0 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/TZVP
ABC
0.36057 0.31041 0.16681

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.087
N2 0.000 1.157 0.369
N3 0.000 -1.157 0.369
C4 0.000 0.732 -0.868
C5 0.000 -0.732 -0.868
H6 0.000 0.000 2.166
H7 0.000 1.398 -1.718
H8 0.000 -1.398 -1.718

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36191.36192.08812.08811.07903.13443.1344
N21.36192.31441.30852.25852.13742.10113.2995
N31.36192.31442.25851.30852.13743.29952.1011
C42.08811.30852.25851.46423.12161.07972.2935
C52.08812.25851.30851.46423.12162.29351.0797
H61.07902.13742.13743.12163.12164.12834.1283
H73.13442.10113.29951.07972.29354.12832.7964
H83.13443.29952.10112.29351.07974.12832.7964

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 102.861 C1 N3 C5 102.861
N2 C1 N3 116.363 N2 C1 H6 121.818
N2 C4 C5 108.958 N2 C4 H7 122.951
N3 C1 H6 121.818 N3 C5 C4 108.958
N3 C5 H8 122.951 C4 C5 H8 128.091
C5 C4 H7 128.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.059      
2 N -0.105      
3 N -0.105      
4 C -0.073      
5 C -0.073      
6 H 0.141      
7 H 0.138      
8 H 0.138      


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 -1.691 1.691
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.221 0.000 0.000
y 0.000 -34.666 0.000
z 0.000 0.000 -22.293
Traceless
 xyz
x -0.742 0.000 0.000
y 0.000 -8.908 0.000
z 0.000 0.000 9.651
Polar
3z2-r219.301
x2-y25.444
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.762 0.000 0.000
y 0.000 6.568 0.000
z 0.000 0.000 7.671


<r2> (average value of r2) Å2
<r2> 75.676
(<r2>)1/2 8.699