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

using model chemistry: BLYP/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-265.447133
Energy at 298.15K-265.454724
Nuclear repulsion energy223.123384
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(2df,p)
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 3543 3523 22.72      
2 A 3199 3182 5.97      
3 A 3170 3152 6.38      
4 A 3069 3052 4.87      
5 A 2992 2976 22.06      
6 A 2951 2935 38.50      
7 A 1529 1521 31.41      
8 A 1470 1462 1.48      
9 A 1447 1439 5.06      
10 A 1444 1436 3.58      
11 A 1382 1375 31.06      
12 A 1374 1366 1.09      
13 A 1335 1328 1.76      
14 A 1228 1222 14.80      
15 A 1142 1136 3.67      
16 A 1100 1094 0.98      
17 A 1069 1063 18.78      
18 A 1032 1026 0.97      
19 A 974 969 11.60      
20 A 935 930 1.05      
21 A 898 894 3.97      
22 A 807 803 12.57      
23 A 693 689 20.89      
24 A 666 663 5.93      
25 A 659 655 1.34      
26 A 621 618 16.17      
27 A 492 489 54.73      
28 A 335 333 4.44      
29 A 244 243 4.57      
30 A 82 81 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 20941.2 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 20826.0 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/6-31G(2df,p)
ABC
0.29252 0.11826 0.08558

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.126 -0.023 0.000
H2 2.526 0.493 0.890
H3 2.508 -1.052 -0.001
H4 2.526 0.495 -0.889
N5 -0.168 1.059 0.000
H6 0.153 2.021 -0.001
C7 0.626 -0.072 -0.000
N8 -0.122 -1.171 0.000
C9 -1.439 -0.732 0.000
H10 -2.267 -1.436 0.000
C11 -1.496 0.645 -0.000
H12 -2.314 1.356 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10361.09751.10362.53682.84171.50062.52453.63544.61423.68334.6496
H21.10361.78371.77882.89292.95972.17213.25144.24435.24174.12174.9960
H31.09751.78371.78383.40843.87212.12142.63233.95994.78944.34865.3897
H41.10361.77881.78382.89232.95822.17213.25214.24465.24224.12144.9955
N52.53682.89293.40842.89231.01441.38202.23092.19653.25981.39072.1664
H62.84172.95973.87212.95821.01442.14613.20463.18074.21942.14732.5548
C71.50062.17212.12142.17211.38202.14611.33022.16883.19832.24023.2689
N82.52453.25142.63233.25212.23093.20461.33021.38862.16072.27783.3457
C93.63544.24433.95994.24462.19653.18072.16881.38861.08581.37882.2643
H104.61425.24174.78945.24223.25984.21943.19832.16071.08582.21922.7923
C113.68334.12174.34864.12141.39072.14732.24022.27781.37882.21921.0838
H124.64964.99605.38974.99552.16642.55483.26893.34572.26432.79231.0838

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 123.242 C1 C7 N8 126.092
H2 C1 H3 108.271 H2 C1 H4 107.403
H2 C1 C7 112.140 H3 C1 H4 108.272
H3 C1 C7 108.481 H4 C1 C7 112.141
N5 C7 N8 110.666 N5 C11 C9 104.949
N5 C11 H12 121.716 H6 N5 C7 126.470
H6 N5 C11 125.736 C7 N5 C11 107.794
C7 N8 C9 105.802 N8 C9 H10 121.183
N8 C9 C11 110.789 C9 C11 H12 133.336
H10 C9 C11 128.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.467      
2 H 0.114      
3 H 0.142      
4 H 0.114      
5 N -0.227      
6 H 0.238      
7 C 0.349      
8 N -0.274      
9 C -0.070      
10 H 0.081      
11 C -0.099      
12 H 0.100      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.510 3.381 -0.001 3.419
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.043 0.470 -0.000
y 0.470 -33.724 -0.002
z -0.000 -0.002 -37.011
Traceless
 xyz
x 4.325 0.470 -0.000
y 0.470 0.303 -0.002
z -0.000 -0.002 -4.628
Polar
3z2-r2-9.255
x2-y22.681
xy0.470
xz-0.000
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.708 0.112 0.000
y 0.112 8.414 -0.000
z 0.000 -0.000 4.584


<r2> (average value of r2) Å2
<r2> 140.759
(<r2>)1/2 11.864