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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-265.354359
Energy at 298.15K-265.362060
Nuclear repulsion energy221.161910
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/6-31G
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 3550 3523 16.19      
2 A 3237 3212 8.45      
3 A 3213 3189 4.54      
4 A 3086 3062 6.31      
5 A 3005 2982 29.46      
6 A 2958 2936 42.08      
7 A 1531 1520 39.94      
8 A 1500 1488 0.80      
9 A 1495 1484 8.99      
10 A 1459 1448 7.65      
11 A 1422 1411 0.69      
12 A 1371 1361 17.69      
13 A 1328 1318 4.56      
14 A 1250 1241 24.04      
15 A 1137 1128 5.87      
16 A 1089 1081 4.50      
17 A 1077 1069 13.00      
18 A 1065 1056 3.30      
19 A 981 974 11.61      
20 A 943 936 2.61      
21 A 909 903 2.91      
22 A 833 827 10.06      
23 A 713 708 36.87      
24 A 662 657 0.53      
25 A 660 655 1.36      
26 A 623 619 28.32      
27 A 592 587 96.54      
28 A 339 337 5.34      
29 A 242 241 5.51      
30 A 92 91 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 21181.5 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 21020.5 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 BLYP/6-31G
ABC
0.28778 0.11612 0.08406

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.142 -0.023 0.000
H2 2.546 0.490 0.892
H3 2.516 -1.056 -0.000
H4 2.546 0.491 -0.892
N5 -0.173 1.072 0.000
H6 0.141 2.039 -0.001
C7 0.642 -0.066 -0.000
N8 -0.116 -1.182 -0.000
C9 -1.456 -0.740 -0.000
H10 -2.276 -1.449 0.000
C11 -1.512 0.646 0.000
H12 -2.340 1.346 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10561.09901.10572.56032.87281.50072.53843.66844.64273.71474.6861
H21.10561.78531.78432.91992.99682.17533.26804.28065.27364.15815.0399
H31.09901.78531.78533.42903.90122.11972.63573.98474.80874.37315.4177
H41.10571.78431.78532.91992.99602.17533.26834.28085.27404.15835.0400
N52.56032.91993.42902.91991.01641.39962.25462.22013.28361.40592.1845
H62.87282.99683.90122.99601.01642.16383.23093.20474.24382.16212.5757
C71.50072.17532.11972.17531.39962.16381.34892.20313.22932.26873.2993
N82.53843.26802.63573.26832.25463.23091.34891.41052.17642.29963.3668
C93.66844.28063.98474.28082.22013.20472.20311.41051.08471.38642.2655
H104.64275.27364.80875.27403.28364.24383.22932.17641.08472.22972.7962
C113.71474.15814.37314.15831.40592.16212.26872.29961.38642.22971.0843
H124.68615.03995.41775.04002.18452.57573.29933.36682.26552.79621.0843

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 123.923 C1 C7 N8 125.862
H2 C1 H3 108.156 H2 C1 H4 107.584
H2 C1 C7 112.267 H3 C1 H4 108.156
H3 C1 C7 108.258 H4 C1 C7 112.271
N5 C7 N8 110.215 N5 C11 C9 105.323
N5 C11 H12 122.087 H6 N5 C7 126.444
H6 N5 C11 125.628 C7 N5 C11 107.928
C7 N8 C9 105.933 N8 C9 H10 120.881
N8 C9 C11 110.602 C9 C11 H12 132.590
H10 C9 C11 128.517
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.424      
2 H 0.137      
3 H 0.167      
4 H 0.137      
5 N -0.614      
6 H 0.294      
7 C 0.390      
8 N -0.378      
9 C -0.049      
10 H 0.109      
11 C 0.108      
12 H 0.124      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.435 3.693 -0.002 3.718
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.462 0.563 -0.000
y 0.563 -34.398 -0.005
z -0.000 -0.005 -37.676
Traceless
 xyz
x 5.575 0.563 -0.000
y 0.563 -0.328 -0.005
z -0.000 -0.005 -5.246
Polar
3z2-r2-10.493
x2-y23.935
xy0.563
xz-0.000
yz-0.005


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


<r2> (average value of r2) Å2
<r2> 142.951
(<r2>)1/2 11.956