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

using model chemistry: BLYP/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 BLYP/6-311G**
 hartrees
Energy at 0K-265.505612
Energy at 298.15K-265.513216
Nuclear repulsion energy223.009129
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 BLYP/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 3533 3519 23.99      
2 A 3186 3174 6.44      
3 A 3158 3145 7.15      
4 A 3058 3046 5.95      
5 A 2983 2971 26.32      
6 A 2945 2934 41.53      
7 A 1527 1521 33.68      
8 A 1468 1462 0.68      
9 A 1450 1445 7.35      
10 A 1442 1436 6.60      
11 A 1379 1374 32.73      
12 A 1375 1370 0.94      
13 A 1331 1325 1.37      
14 A 1225 1220 16.47      
15 A 1133 1129 5.66      
16 A 1096 1092 1.40      
17 A 1062 1058 20.95      
18 A 1032 1028 0.83      
19 A 975 971 12.27      
20 A 933 929 2.33      
21 A 901 897 3.17      
22 A 816 813 11.46      
23 A 692 690 37.97      
24 A 664 662 8.46      
25 A 656 654 1.13      
26 A 622 620 13.66      
27 A 497 495 64.20      
28 A 338 337 4.78      
29 A 239 238 5.27      
30 A 82 81 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 20898.5 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 20817.0 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 BLYP/6-311G**
ABC
0.29251 0.11804 0.08546

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.129 -0.022 0.000
H2 2.526 0.492 0.890
H3 2.505 -1.051 -0.000
H4 2.526 0.493 -0.889
N5 -0.171 1.061 0.000
H6 0.145 2.026 -0.000
C7 0.628 -0.069 -0.000
N8 -0.118 -1.169 -0.000
C9 -1.438 -0.735 -0.000
H10 -2.262 -1.441 0.000
C11 -1.500 0.642 0.000
H12 -2.325 1.345 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10181.09551.10182.54282.85201.50212.52313.63754.61473.68894.6586
H21.10181.78141.77922.89732.96992.17073.24744.24425.24014.12595.0051
H31.09551.78141.78143.40993.87862.11892.62643.95594.78354.34835.3915
H41.10181.77921.78142.89702.96912.17073.24784.24445.24044.12595.0048
N52.54282.89733.40992.89701.01551.38452.23132.19823.26111.39282.1717
H62.85202.96993.87862.96911.01552.15063.20653.18314.22122.14942.5614
C71.50212.17072.11892.17071.38452.15061.32912.17033.19892.24313.2734
N82.52313.24742.62643.24782.23133.20651.32911.38912.16102.27813.3450
C93.63754.24423.95594.24442.19823.18312.17031.38911.08521.37902.2614
H104.61475.24014.78355.24043.26114.22123.19892.16101.08522.21872.7871
C113.68894.12594.34834.12591.39282.14942.24312.27811.37902.21871.0836
H124.65865.00515.39155.00482.17172.56143.27343.34502.26142.78711.0836

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 123.453 C1 C7 N8 125.939
H2 C1 H3 108.329 H2 C1 H4 107.688
H2 C1 C7 112.035 H3 C1 H4 108.330
H3 C1 C7 108.300 H4 C1 C7 112.036
N5 C7 N8 110.609 N5 C11 C9 104.946
N5 C11 H12 122.057 H6 N5 C7 126.617
H6 N5 C11 125.645 C7 N5 C11 107.738
C7 N8 C9 105.939 N8 C9 H10 121.214
N8 C9 C11 110.769 C9 C11 H12 132.997
H10 C9 C11 128.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.272      
2 H 0.114      
3 H 0.132      
4 H 0.114      
5 N -0.332      
6 H 0.214      
7 C 0.205      
8 N -0.285      
9 C -0.076      
10 H 0.086      
11 C 0.007      
12 H 0.092      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.494 3.477 -0.000 3.512
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.398 0.548 0.001
y 0.548 -34.410 -0.002
z 0.001 -0.002 -38.068
Traceless
 xyz
x 4.841 0.548 0.001
y 0.548 0.323 -0.002
z 0.001 -0.002 -5.164
Polar
3z2-r2-10.328
x2-y23.012
xy0.548
xz0.001
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.981 0.063 0.000
y 0.063 8.719 0.000
z 0.000 0.000 4.916


<r2> (average value of r2) Å2
<r2> 141.344
(<r2>)1/2 11.889