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

using model chemistry: TPSSh/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/cc-pVTZ
 hartrees
Energy at 0K-265.649723
Energy at 298.15K-265.657484
HF Energy-265.649723
Nuclear repulsion energy225.083079
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 TPSSh/cc-pVTZ
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 3631 3516 35.20      
2 A 3264 3161 4.56      
3 A 3235 3132 5.94      
4 A 3135 3035 5.07      
5 A 3064 2967 21.28      
6 A 3019 2923 35.59      
7 A 1587 1537 33.24      
8 A 1519 1471 2.30      
9 A 1497 1449 5.80      
10 A 1495 1448 6.10      
11 A 1438 1393 36.89      
12 A 1418 1373 0.47      
13 A 1383 1340 1.39      
14 A 1271 1231 14.03      
15 A 1178 1140 4.96      
16 A 1135 1099 1.64      
17 A 1098 1063 23.86      
18 A 1062 1028 0.51      
19 A 1003 971 11.02      
20 A 963 932 1.81      
21 A 920 891 3.21      
22 A 863 835 10.31      
23 A 732 708 48.08      
24 A 687 665 2.89      
25 A 673 652 1.16      
26 A 641 621 12.92      
27 A 527 510 60.69      
28 A 340 329 4.95      
29 A 250 242 5.47      
30 A 79 77 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 21552.9 cm-1
Scaled (by 0.9683) Zero Point Vibrational Energy (zpe) 20869.6 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 TPSSh/cc-pVTZ
ABC
0.29825 0.12020 0.08707

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.112 -0.025 0.000
H2 2.499 0.487 0.885
H3 2.487 -1.046 -0.001
H4 2.499 0.490 -0.884
N5 -0.164 1.051 0.000
H6 0.159 2.004 -0.001
C7 0.618 -0.072 -0.000
N8 -0.119 -1.157 -0.000
C9 -1.431 -0.726 -0.000
H10 -2.252 -1.425 0.000
C11 -1.483 0.639 0.000
H12 -2.302 1.338 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09361.08761.09362.51762.81641.49462.50193.61114.58243.65594.6197
H21.09361.77151.76852.86232.92592.15273.21624.20675.19694.08214.9553
H31.08761.77151.77153.38023.83712.10782.60863.93074.75364.31295.3498
H41.09361.76851.77152.86162.92362.15273.21704.20725.19764.08184.9549
N52.51762.86233.38022.86161.00651.36802.20822.18153.23811.38182.1570
H62.81642.92593.83712.92361.00652.12573.17323.15854.19122.13542.5492
C71.49462.15272.10782.15271.36802.12571.31232.15053.17262.21813.2426
N82.50193.21622.60863.21702.20823.17321.31231.38052.14892.25503.3153
C93.61114.20673.93074.20722.18153.15852.15051.38051.07841.36532.2403
H104.58245.19694.75365.19763.23814.19123.17262.14891.07842.20202.7637
C113.65594.08214.31294.08181.38182.13542.21812.25501.36532.20201.0770
H124.61974.95535.34984.95492.15702.54923.24263.31532.24032.76371.0770

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 123.102 C1 C7 N8 125.963
H2 C1 H3 108.609 H2 C1 H4 107.911
H2 C1 C7 111.615 H3 C1 H4 108.609
H3 C1 C7 108.397 H4 C1 C7 111.618
N5 C7 N8 110.935 N5 C11 C9 105.139
N5 C11 H12 122.142 H6 N5 C7 126.399
H6 N5 C11 126.068 C7 N5 C11 107.533
C7 N8 C9 105.971 N8 C9 H10 121.356
N8 C9 C11 110.423 C9 C11 H12 132.720
H10 C9 C11 128.221
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.218      
2 H 0.078      
3 H 0.100      
4 H 0.078      
5 N -0.071      
6 H 0.149      
7 C 0.116      
8 N -0.231      
9 C -0.076      
10 H 0.098      
11 C -0.126      
12 H 0.101      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.560 3.497 -0.001 3.541
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.049 0.034 0.000
y 0.034 8.894 -0.000
z 0.000 -0.000 5.477


<r2> (average value of r2) Å2
<r2> 138.885
(<r2>)1/2 11.785