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

using model chemistry: LSDA/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 LSDA/aug-cc-pVDZ
 hartrees
Energy at 0K-264.111705
Energy at 298.15K-264.119428
Nuclear repulsion energy225.268185
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 LSDA/aug-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 A 3544 3504 43.60      
2 A 3214 3178 0.26      
3 A 3182 3146 2.94      
4 A 3097 3062 0.43      
5 A 3037 3003 7.38      
6 A 2970 2936 23.91      
7 A 1585 1567 41.74      
8 A 1500 1483 2.02      
9 A 1457 1440 13.95      
10 A 1394 1378 0.92      
11 A 1382 1367 9.35      
12 A 1368 1353 28.16      
13 A 1326 1311 1.53      
14 A 1260 1246 12.86      
15 A 1182 1169 2.94      
16 A 1105 1093 10.44      
17 A 1072 1060 26.22      
18 A 998 986 1.92      
19 A 974 963 6.92      
20 A 925 914 0.74      
21 A 904 894 3.16      
22 A 832 823 8.85      
23 A 704 696 46.54      
24 A 683 675 0.84      
25 A 682 674 9.99      
26 A 636 629 12.34      
27 A 574 567 65.38      
28 A 337 334 5.75      
29 A 248 245 5.87      
30 A 82 81 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 21126.4 cm-1
Scaled (by 0.9887) Zero Point Vibrational Energy (zpe) 20887.7 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 LSDA/aug-cc-pVDZ
ABC
0.29752 0.12111 0.08752

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.097 -0.025 0.000
H2 2.502 0.486 0.896
H3 2.466 -1.065 -0.001
H4 2.503 0.488 -0.895
N5 -0.165 1.046 -0.000
H6 0.162 2.012 -0.001
C7 0.624 -0.067 -0.000
N8 -0.123 -1.156 -0.000
C9 -1.421 -0.730 0.000
H10 -2.258 -1.436 0.000
C11 -1.475 0.643 0.000
H12 -2.307 1.353 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10861.10351.10862.50342.81021.47422.49093.58844.57833.63464.6147
H21.10861.79251.79132.86952.93462.15383.22324.20455.21174.08054.9683
H31.10351.79251.79253.37423.84482.09612.59063.90224.73934.29635.3509
H41.10861.79131.79252.86882.93282.15383.22394.20505.21244.08044.9679
N52.50342.86953.37422.86881.02011.36412.20242.17573.24701.37072.1635
H62.81022.93463.84482.93281.02012.12963.18083.16694.21322.13442.5556
C71.47422.15382.09612.15381.36412.12961.32012.14993.19082.21583.2561
N82.49093.22322.59063.22392.20243.18081.32011.36672.15412.25093.3262
C93.58844.20453.90224.20502.17573.16692.14991.36671.09491.37472.2635
H104.57835.21174.73935.21243.24704.21323.19082.15411.09492.22202.7893
C113.63464.08054.29634.08041.37072.13442.21582.25091.37472.22201.0930
H124.61474.96835.35094.96792.16352.55563.25613.32622.26352.78931.0930

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 123.729 C1 C7 N8 126.017
H2 C1 H3 108.250 H2 C1 H4 107.791
H2 C1 C7 112.230 H3 C1 H4 108.251
H3 C1 C7 107.949 H4 C1 C7 112.233
N5 C7 N8 110.254 N5 C11 C9 104.841
N5 C11 H12 122.437 H6 N5 C7 125.951
H6 N5 C11 125.813 C7 N5 C11 108.236
C7 N8 C9 106.279 N8 C9 H10 121.721
N8 C9 C11 110.390 C9 C11 H12 132.722
H10 C9 C11 127.890
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.712      
2 H -0.117      
3 H -0.180      
4 H -0.117      
5 N 0.019      
6 H -0.142      
7 C -0.340      
8 N -0.167      
9 C 0.402      
10 H -0.394      
11 C 0.734      
12 H -0.410      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.620 3.578 -0.001 3.632
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.247 0.647 -0.001
y 0.647 -34.836 -0.002
z -0.001 -0.002 -38.468
Traceless
 xyz
x 5.405 0.647 -0.001
y 0.647 0.021 -0.002
z -0.001 -0.002 -5.426
Polar
3z2-r2-10.853
x2-y23.589
xy0.647
xz-0.001
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.276 -0.068 0.004
y -0.068 10.023 0.000
z 0.004 0.000 6.671


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000