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

using model chemistry: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-263.922266
Energy at 298.15K-263.930363
Nuclear repulsion energy226.996174
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 HF/6-311G**
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 3906 3549 80.68      
2 A 3428 3115 5.97      
3 A 3397 3086 7.56      
4 A 3285 2984 8.84      
5 A 3217 2922 30.67      
6 A 3168 2878 33.56      
7 A 1768 1606 65.90      
8 A 1662 1510 10.12      
9 A 1626 1477 12.97      
10 A 1601 1455 7.75      
11 A 1576 1432 44.89      
12 A 1539 1399 0.46      
13 A 1498 1361 2.10      
14 A 1371 1246 15.67      
15 A 1249 1135 15.59      
16 A 1229 1117 0.19      
17 A 1169 1062 32.62      
18 A 1160 1054 1.09      
19 A 1095 994 11.34      
20 A 1050 954 6.66      
21 A 1004 912 1.93      
22 A 992 901 5.70      
23 A 832 756 56.14      
24 A 755 686 9.68      
25 A 719 653 1.51      
26 A 691 628 7.88      
27 A 537 488 94.80      
28 A 373 339 5.60      
29 A 280 255 9.24      
30 A 84 76 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 23131.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 21014.5 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 HF/6-311G**
ABC
0.30547 0.12162 0.08841

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.101 -0.025 0.000
H2 2.477 0.489 0.880
H3 2.479 -1.037 -0.001
H4 2.477 0.491 -0.879
N5 -0.163 1.041 0.000
H6 0.159 1.979 -0.002
C7 0.607 -0.072 -0.000
N8 -0.113 -1.142 -0.000
C9 -1.420 -0.717 -0.000
H10 -2.233 -1.413 0.000
C11 -1.476 0.628 -0.000
H12 -2.294 1.315 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.08641.08061.08642.50222.78961.49442.47973.58814.55053.63524.5944
H21.08641.76201.75952.83732.89292.14153.18464.17325.15504.05174.9214
H31.08061.76201.76203.36133.80442.10592.59433.91194.72674.29065.3209
H41.08641.75951.76202.83672.89052.14163.18544.17355.15564.05134.9209
N52.50222.83733.36132.83670.99161.35362.18302.16123.21021.37562.1484
H62.78962.89293.80442.89050.99162.09903.13203.12454.15042.12042.5416
C71.49442.14152.10592.14161.35362.09901.28942.12723.14062.19713.2156
N82.47973.18462.59433.18542.18303.13201.28941.37382.13692.23323.2848
C93.58814.17323.91194.17352.16123.12452.12721.37381.07001.34672.2123
H104.55055.15504.72675.15563.21024.15043.14062.13691.07002.17732.7288
C113.63524.05174.29064.05131.37562.12042.19712.23321.34672.17731.0685
H124.59444.92145.32094.92092.14842.54163.21563.28482.21232.72881.0685

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 122.868 C1 C7 N8 125.780
H2 C1 H3 108.809 H2 C1 H4 108.149
H2 C1 C7 111.173 H3 C1 H4 108.807
H3 C1 C7 108.670 H4 C1 C7 111.176
N5 C7 N8 111.352 N5 C11 C9 105.099
N5 C11 H12 122.543 H6 N5 C7 126.331
H6 N5 C11 126.445 C7 N5 C11 107.224
C7 N8 C9 105.980 N8 C9 H10 121.457
N8 C9 C11 110.346 C9 C11 H12 132.358
H10 C9 C11 128.197
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.210      
2 H 0.107      
3 H 0.134      
4 H 0.107      
5 N -0.453      
6 H 0.236      
7 C 0.329      
8 N -0.424      
9 C -0.048      
10 H 0.097      
11 C 0.018      
12 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.594 3.663 -0.003 3.711
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.501 0.638 -0.001
y 0.638 -34.372 -0.007
z -0.001 -0.007 -38.214
Traceless
 xyz
x 5.791 0.638 -0.001
y 0.638 -0.014 -0.007
z -0.001 -0.007 -5.777
Polar
3z2-r2-11.554
x2-y23.871
xy0.638
xz-0.001
yz-0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.220 0.123 0.000
y 0.123 7.956 -0.000
z 0.000 -0.000 4.692


<r2> (average value of r2) Å2
<r2> 137.214
(<r2>)1/2 11.714