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

using model chemistry: B1B95/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-265.459341
Energy at 298.15K-265.467169
Nuclear repulsion energy 
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3691 3536 50.71      
2 A 3312 3173 1.94      
3 A 3279 3141 4.75      
4 A 3189 3055 3.02      
5 A 3125 2994 14.95      
6 A 3061 2932 30.41      
7 A 1624 1556 37.84      
8 A 1547 1482 7.13      
9 A 1504 1441 13.14      
10 A 1459 1398 7.24      
11 A 1440 1379 30.20      
12 A 1425 1365 1.39      
13 A 1385 1327 1.26      
14 A 1287 1233 13.46      
15 A 1205 1154 2.64      
16 A 1142 1094 5.55      
17 A 1108 1062 27.49      
18 A 1047 1003 0.89      
19 A 1005 963 7.11      
20 A 967 927 1.60      
21 A 923 885 2.55      
22 A 869 833 9.52      
23 A 738 707 55.23      
24 A 695 665 3.46      
25 A 686 658 0.85      
26 A 646 619 13.40      
27 A 558 534 64.02      
28 A 347 333 5.34      
29 A 256 245 5.97      
30 A 82 78 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 21801.7 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 20883.8 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/aug-cc-pVDZ
ABC
0.29914 0.12093 0.08753

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.103 -0.024 0.000
H2 2.495 0.487 0.888
H3 2.476 -1.050 -0.001
H4 2.495 0.489 -0.887
N5 -0.166 1.046 0.000
H6 0.159 1.999 -0.001
C7 0.619 -0.068 -0.000
N8 -0.120 -1.156 -0.000
C9 -1.423 -0.726 -0.000
H10 -2.250 -1.425 0.000
C11 -1.478 0.640 0.000
H12 -2.301 1.340 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09681.09141.09682.50862.80581.48522.49493.59504.57283.64174.6107
H21.09681.77561.77442.85962.92052.14863.21344.19595.19174.07294.9511
H31.09141.77561.77573.37253.82952.10122.59893.91254.74124.29995.3420
H41.09681.77441.77572.85902.91892.14873.21414.19635.19234.07284.9508
N52.50862.85963.37252.85901.00641.36282.20252.17273.23251.37332.1556
H62.80582.92053.82952.91891.00642.11773.16703.15054.18592.12702.5466
C71.48522.14862.10122.14871.36282.11771.31472.14453.17292.21253.2417
N82.49493.21342.59893.21412.20253.16701.31471.37152.14652.25103.3146
C93.59504.19593.91254.19632.17273.15052.14451.37151.08281.36712.2452
H104.57285.19174.74125.19233.23254.18593.17292.14651.08282.20442.7653
C113.64174.07294.29994.07281.37332.12702.21252.25101.36712.20441.0810
H124.61074.95115.34204.95082.15562.54663.24173.31462.24522.76531.0810

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 123.427 C1 C7 N8 125.898
H2 C1 H3 108.477 H2 C1 H4 107.973
H2 C1 C7 111.757 H3 C1 H4 108.478
H3 C1 C7 108.298 H4 C1 C7 111.760
N5 C7 N8 110.675 N5 C11 C9 104.902
N5 C11 H12 122.427 H6 N5 C7 126.057
H6 N5 C11 126.013 C7 N5 C11 107.930
C7 N8 C9 105.927 N8 C9 H10 121.551
N8 C9 C11 110.566 C9 C11 H12 132.671
H10 C9 C11 127.884
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.833      
2 H -0.109      
3 H -0.188      
4 H -0.110      
5 N -0.243      
6 H -0.190      
7 C -0.135      
8 N -0.476      
9 C 0.576      
10 H -0.401      
11 C 0.859      
12 H -0.417      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.610 3.556 -0.001 3.608
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.947 0.604 -0.001
y 0.604 -34.462 -0.002
z -0.001 -0.002 -38.112
Traceless
 xyz
x 5.341 0.604 -0.001
y 0.604 0.067 -0.002
z -0.001 -0.002 -5.407
Polar
3z2-r2-10.815
x2-y23.516
xy0.604
xz-0.001
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.562 -0.021 0.000
y -0.021 9.512 0.000
z 0.000 0.000 6.413


<r2> (average value of r2) Å2
<r2> 138.522
(<r2>)1/2 11.770