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

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-265.342532
Energy at 298.15K-265.350476
Nuclear repulsion energy224.121556
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 B1B95/6-31G
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 3711 3539 44.26      
2 A 3349 3193 4.02      
3 A 3323 3169 3.41      
4 A 3195 3047 3.20      
5 A 3125 2980 20.40      
6 A 3061 2919 30.36      
7 A 1618 1543 49.67      
8 A 1551 1479 3.44      
9 A 1530 1459 11.90      
10 A 1529 1458 3.77      
11 A 1459 1392 1.47      
12 A 1447 1380 32.66      
13 A 1408 1343 3.02      
14 A 1314 1254 21.09      
15 A 1195 1140 5.67      
16 A 1150 1097 7.39      
17 A 1131 1078 21.68      
18 A 1095 1044 5.18      
19 A 1022 975 8.44      
20 A 986 941 2.31      
21 A 943 900 2.84      
22 A 899 857 8.31      
23 A 767 731 37.77      
24 A 696 664 3.70      
25 A 690 658 1.32      
26 A 668 637 152.08      
27 A 648 618 0.04      
28 A 350 334 5.99      
29 A 257 246 6.59      
30 A 101 96 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 22109.1 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 21085.4 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 B1B95/6-31G
ABC
0.29583 0.11922 0.08635

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.114 -0.023 -0.000
H2 2.513 0.482 0.886
H3 2.482 -1.049 -0.001
H4 2.513 0.484 -0.885
N5 -0.169 1.056 0.000
H6 0.146 2.010 0.000
C7 0.632 -0.065 -0.000
N8 -0.116 -1.163 -0.000
C9 -1.437 -0.731 0.000
H10 -2.252 -1.433 0.000
C11 -1.491 0.639 -0.000
H12 -2.314 1.331 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09511.08941.09512.52622.83011.48352.50483.62124.58803.66544.6308
H21.09511.76981.77052.88262.95322.15043.22564.22605.21114.10354.9804
H31.08941.76981.76983.38543.84892.09582.60033.93194.74914.31625.3537
H41.09511.77051.76982.88212.95202.15053.22634.22655.21174.10324.9799
N52.52622.88263.38542.88211.00491.37772.22032.19083.24521.38542.1620
H62.83012.95323.84892.95201.00492.13103.18453.16534.19582.13512.5522
C71.48352.15042.09582.15051.37772.13101.32882.17313.19132.23583.2593
N82.50483.22562.60033.22632.22033.18451.32881.39032.15272.26703.3245
C93.62124.22603.93194.22652.19083.16532.17311.39031.07551.37082.2401
H104.58805.21114.74915.21173.24524.19583.19132.15271.07552.20742.7644
C113.66544.10354.31624.10321.38542.13512.23582.26701.37082.20741.0753
H124.63084.98045.35374.97992.16202.55223.25933.32452.24012.76441.0753

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 123.948 C1 C7 N8 125.827
H2 C1 H3 108.223 H2 C1 H4 107.872
H2 C1 C7 112.136 H3 C1 H4 108.224
H3 C1 C7 108.112 H4 C1 C7 112.138
N5 C7 N8 110.225 N5 C11 C9 105.281
N5 C11 H12 122.451 H6 N5 C7 126.148
H6 N5 C11 125.822 C7 N5 C11 108.030
C7 N8 C9 106.087 N8 C9 H10 121.094
N8 C9 C11 110.376 C9 C11 H12 132.268
H10 C9 C11 128.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.498      
2 H 0.171      
3 H 0.205      
4 H 0.171      
5 N -0.725      
6 H 0.340      
7 C 0.412      
8 N -0.421      
9 C -0.092      
10 H 0.164      
11 C 0.092      
12 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.436 3.838 -0.000 3.863
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.798 0.594 0.000
y 0.594 -34.118 -0.001
z 0.000 -0.001 -37.673
Traceless
 xyz
x 6.097 0.594 0.000
y 0.594 -0.382 -0.001
z 0.000 -0.001 -5.715
Polar
3z2-r2-11.430
x2-y24.319
xy0.594
xz0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.588 0.154 0.000
y 0.154 7.798 -0.000
z 0.000 -0.000 3.807


<r2> (average value of r2) Å2
<r2> 139.588
(<r2>)1/2 11.815