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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: MP3=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3=FULL/6-31G**
 hartrees
Energy at 0K-225.491216
Energy at 298.15K-225.497261
HF Energy-224.731529
Nuclear repulsion energy166.837406
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 MP3=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3348 3348 10.24      
2 A1 3174 3174 0.36      
3 A1 1782 1782 21.34      
4 A1 1496 1496 3.91      
5 A1 1456 1456 12.29      
6 A1 1299 1299 3.26      
7 A1 1075 1075 1.16      
8 A1 969 969 13.67      
9 A2 1187 1187 0.00      
10 A2 905 905 0.00      
11 A2 545 545 0.00      
12 B1 3227 3227 0.24      
13 B1 1051 1051 21.82      
14 B1 840 840 4.77      
15 B1 359 359 38.36      
16 B2 3332 3332 8.08      
17 B2 1848 1848 0.15      
18 B2 1466 1466 33.01      
19 B2 1294 1294 1.12      
20 B2 1117 1117 30.90      
21 B2 956 956 65.38      

Unscaled Zero Point Vibrational Energy (zpe) 16362.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16362.7 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 MP3=FULL/6-31G**
ABC
0.36321 0.30405 0.17087

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.205
N2 0.000 0.997 0.280
N3 0.000 -0.997 0.280
C4 0.000 0.726 -0.946
C5 0.000 -0.726 -0.946
H6 -0.891 0.000 1.828
H7 0.891 0.000 1.828
H8 0.000 1.465 -1.728
H9 0.000 -1.465 -1.728

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35971.35972.26982.26981.08731.08733.27813.2781
N21.35971.99431.25602.11472.04512.04512.06193.1774
N31.35971.99432.11471.25602.04512.04513.17742.0619
C42.26981.25602.11471.45143.00233.00231.07612.3262
C52.26982.11471.25601.45143.00233.00232.32621.0761
H61.08732.04512.04513.00233.00231.78253.94733.9473
H71.08732.04512.04513.00233.00231.78253.94733.9473
H83.27812.06193.17741.07612.32623.94733.94732.9306
H93.27813.17742.06192.32621.07613.94733.94732.9306

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.350 C1 N3 C5 120.350
N2 C1 N3 94.336 N2 C1 H6 112.920
N2 C1 H7 112.920 N2 C4 C5 102.482
N2 C4 H8 124.103 N3 C1 H6 112.920
N3 C1 H7 112.920 N3 C5 C4 102.482
N3 C5 H9 124.103 C4 C5 H9 133.415
C5 C4 H8 133.415 H6 C1 H7 110.104
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability