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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-225.598959
Energy at 298.15K-225.604866
HF Energy-224.856829
Nuclear repulsion energy162.878156
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 MP2/6-311G*
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' 3698 3514 63.15      
2 A' 3309 3144 1.56      
3 A' 3287 3123 1.11      
4 A' 3282 3119 4.33      
5 A' 1550 1473 10.62      
6 A' 1517 1442 18.06      
7 A' 1482 1409 15.82      
8 A' 1378 1310 8.19      
9 A' 1282 1219 0.99      
10 A' 1194 1135 3.50      
11 A' 1165 1107 2.40      
12 A' 1114 1058 31.34      
13 A' 1093 1038 24.36      
14 A' 942 895 2.42      
15 A' 903 858 7.25      
16 A" 807 767 23.80      
17 A" 771 733 50.80      
18 A" 684 650 5.28      
19 A" 679 645 17.84      
20 A" 641 609 35.11      
21 A" 513 488 83.70      

Unscaled Zero Point Vibrational Energy (zpe) 15646.1 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 14868.5 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 MP2/6-311G*
ABC
0.32589 0.31052 0.15901

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.743 -0.994 0.000
H2 -0.009 2.115 0.000
C3 1.120 0.307 0.000
H4 2.119 0.716 0.000
C5 0.635 -0.985 0.000
H6 1.199 -1.906 0.000
H7 -2.102 0.661 0.000
C8 -1.089 0.281 0.000
N9 0.000 1.107 0.000

Atom - Atom Distances (Å)
  N1 H2 C3 H4 C5 H6 H7 C8 N9
N13.19412.27193.33371.37752.14572.14181.32142.2289
H23.19412.13082.54683.16524.19852.54742.12781.0072
C32.27192.13081.07971.37972.21483.24042.20871.3760
H43.33372.54681.07972.25702.77854.22093.23742.1549
C51.37753.16521.37972.25701.08093.19312.13842.1860
H62.14574.19852.21482.77851.08094.18203.16563.2434
H72.14182.54743.24044.22093.19314.18201.08152.1483
C81.32142.12782.20873.23742.13843.16561.08151.3670
N92.22891.00721.37602.15492.18603.24342.14831.3670

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 69.960 N1 C2 H7 41.943
N1 C3 C5 34.480 N1 C3 H8 34.268
C2 N1 C3 41.776 C2 N1 H6 101.877
C2 N4 C5 82.194 C3 N1 H6 60.100
C3 C5 N4 20.549 C3 C5 H9 37.451
N4 C2 H7 111.903 N4 C5 H9 58.000
C5 C3 H8 68.749
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability