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

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-262.059179
Energy at 298.15K-262.066243
Nuclear repulsion energy217.044550
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/STO-3G
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 3596 3327 19.05      
2 A 3414 3159 8.54      
3 A 3384 3131 9.33      
4 A 3381 3128 0.80      
5 A 3335 3086 1.39      
6 A 3197 2958 2.80      
7 A 1629 1507 3.56      
8 A 1618 1497 6.18      
9 A 1572 1454 21.09      
10 A 1515 1402 2.02      
11 A 1510 1397 7.19      
12 A 1436 1328 8.87      
13 A 1388 1284 3.42      
14 A 1257 1163 22.38      
15 A 1143 1057 1.77      
16 A 1105 1022 3.27      
17 A 1102 1019 6.39      
18 A 1084 1003 3.40      
19 A 1005 930 1.21      
20 A 943 873 2.52      
21 A 896 829 1.18      
22 A 840 777 3.00      
23 A 717 664 20.30      
24 A 655 606 1.56      
25 A 617 571 1.94      
26 A 606 561 11.07      
27 A 410 380 65.10      
28 A 322 298 2.90      
29 A 235 217 3.84      
30 A 99 92 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 22004.9 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 20358.9 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/STO-3G
ABC
0.27426 0.11257 0.08107

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.181 -0.013 -0.000
H2 2.565 0.513 0.901
H3 2.577 -1.048 -0.001
H4 2.565 0.514 -0.900
N5 -0.174 1.091 0.000
H6 0.154 2.094 0.000
C7 0.645 -0.080 -0.000
N8 -0.119 -1.237 0.000
C9 -1.480 -0.733 -0.000
H10 -2.331 -1.435 -0.000
C11 -1.533 0.659 -0.000
H12 -2.362 1.384 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.11181.10771.11182.60042.92421.53712.60473.73064.73023.77424.7532
H21.11181.80251.80112.94013.02092.20183.32784.32705.34534.19835.0842
H31.10771.80251.80253.48413.96802.16082.70234.06884.92304.45035.5056
H41.11181.80111.80252.93973.02002.20183.32834.32715.34564.19815.0837
N52.60042.94013.48412.93971.05541.42842.32822.24353.32141.42652.2084
H62.92423.02093.96803.02001.05542.22873.34213.26534.31572.21482.6143
C71.53712.20182.16082.20181.42842.22871.38652.22313.26992.30003.3448
N82.60473.32782.70233.32832.32823.34211.38651.45112.22092.36513.4501
C93.73064.32704.06884.32712.24353.26532.22311.45111.10291.39322.2941
H104.73025.34534.92305.34563.32144.31573.26992.22091.10292.24032.8190
C113.77424.19834.45034.19811.42652.21482.30002.36511.39322.24031.1017
H124.75325.08425.50565.08372.20842.61433.34483.45012.29412.81901.1017

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 122.500 C1 C7 N8 125.903
H2 C1 H3 108.605 H2 C1 H4 108.188
H2 C1 C7 111.441 H3 C1 H4 108.606
H3 C1 C7 108.484 H4 C1 C7 111.442
N5 C7 N8 111.597 N5 C11 C9 105.429
N5 C11 H12 121.200 H6 N5 C7 126.968
H6 N5 C11 125.687 C7 N5 C11 107.346
C7 N8 C9 103.128 N8 C9 H10 120.208
N8 C9 C11 112.500 C9 C11 H12 133.371
H10 C9 C11 127.292
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.222      
2 H 0.083      
3 H 0.101      
4 H 0.083      
5 N -0.252      
6 H 0.219      
7 C 0.136      
8 N -0.238      
9 C -0.046      
10 H 0.080      
11 C -0.030      
12 H 0.087      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.526 3.408 0.000 3.448
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.213 0.309 0.000
y 0.309 -31.721 0.001
z 0.000 0.001 -34.415
Traceless
 xyz
x 3.854 0.309 0.000
y 0.309 0.094 0.001
z 0.000 0.001 -3.948
Polar
3z2-r2-7.896
x2-y22.507
xy0.309
xz0.000
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.805 0.219 0.000
y 0.219 5.295 0.000
z 0.000 0.000 1.634


<r2> (average value of r2) Å2
<r2> 145.779
(<r2>)1/2 12.074