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

using model chemistry: MP2=FULL/aug-cc-pVDZ

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=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.614469
Energy at 298.15K-225.620435
HF Energy-224.844513
Nuclear repulsion energy161.985883
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=FULL/aug-cc-pVDZ
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' 3666 3553 71.13      
2 A' 3321 3218 0.66      
3 A' 3301 3200 0.74      
4 A' 3294 3193 2.15      
5 A' 1527 1480 4.26      
6 A' 1493 1447 24.92      
7 A' 1464 1419 13.60      
8 A' 1366 1324 5.84      
9 A' 1262 1223 0.55      
10 A' 1180 1144 3.04      
11 A' 1141 1106 3.20      
12 A' 1097 1063 25.37      
13 A' 1075 1042 25.24      
14 A' 928 900 1.73      
15 A' 888 861 5.75      
16 A" 837 812 11.33      
17 A" 781 757 53.88      
18 A" 714 692 28.53      
19 A" 676 655 0.12      
20 A" 642 623 23.21      
21 A" 557 540 73.45      

Unscaled Zero Point Vibrational Energy (zpe) 15604.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 15124.3 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=FULL/aug-cc-pVDZ
ABC
0.32165 0.30776 0.15728

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.109 0.000
C2 -1.098 0.287 0.000
C3 1.125 0.310 0.000
N4 -0.744 -0.999 0.000
C5 0.638 -0.992 0.000
H6 -0.013 2.121 0.000
H7 -2.115 0.670 0.000
H8 2.131 0.721 0.000
H9 1.211 -1.916 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37191.38012.23502.19641.01242.16042.16603.2588
C21.37192.22401.33402.15742.13121.08653.25833.1921
C31.38012.22402.28181.39082.13933.26071.08592.2283
N42.23501.33402.28181.38203.20442.16013.34932.1593
C52.19642.15741.39081.38203.18133.21662.27201.0870
H61.01242.13122.13933.20443.18132.55462.56114.2193
H72.16041.08653.26072.16013.21662.55464.24654.2135
H82.16603.25831.08593.34932.27202.56114.24652.7927
H93.25883.19212.22832.15931.08704.21934.21352.7927

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 111.374 N1 C2 H7 122.573
N1 C3 C5 104.865 N1 C3 H8 122.435
C2 N1 C3 107.831 C2 N1 H6 126.059
C2 N4 C5 105.172 C3 N1 H6 126.110
C3 C5 N4 110.758 C3 C5 H9 127.706
N4 C2 H7 126.053 N4 C5 H9 121.537
C5 C3 H8 132.701
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability