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All results from a given calculation for C3H4N2 (2H-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 C2V 1A1
Energy calculated at MP2=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.508567
Energy at 298.15K-225.514531
HF Energy-224.753074
Nuclear repulsion energy165.614882
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 A1 3287 3186 9.01      
2 A1 3112 3016 1.46      
3 A1 1651 1600 21.35      
4 A1 1414 1370 1.98      
5 A1 1381 1338 26.74      
6 A1 1265 1226 4.03      
7 A1 1044 1012 0.15      
8 A1 922 894 10.03      
9 A2 1138 1103 0.00      
10 A2 886 859 0.00      
11 A2 529 513 0.00      
12 B1 3174 3076 2.24      
13 B1 994 963 23.85      
14 B1 813 788 5.64      
15 B1 341 330 35.60      
16 B2 3272 3171 1.64      
17 B2 1721 1668 0.00      
18 B2 1385 1342 37.52      
19 B2 1230 1192 1.98      
20 B2 1083 1050 33.88      
21 B2 927 898 59.33      

Unscaled Zero Point Vibrational Energy (zpe) 15783.3 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 15297.2 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
0.36062 0.29797 0.16853

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.213
N2 0.000 0.997 0.287
N3 0.000 -0.997 0.287
C4 0.000 0.730 -0.958
C5 0.000 -0.730 -0.958
H6 -0.904 0.000 1.840
H7 0.904 0.000 1.840
H8 0.000 1.489 -1.739
H9 0.000 -1.489 -1.739

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36101.36102.29092.29091.09961.09963.30623.3062
N21.36101.99451.27392.12922.05462.05462.08463.2072
N31.36101.99452.12921.27392.05462.05463.20722.0846
C42.29091.27392.12921.45923.02953.02951.08892.3520
C52.29092.12921.27391.45923.02953.02952.35201.0889
H61.09962.05462.05463.02953.02951.80763.97973.9797
H71.09962.05462.05463.02953.02951.80763.97973.9797
H83.30622.08463.20721.08892.35203.97973.97972.9784
H93.30623.20722.08462.35201.08893.97973.97972.9784

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 120.754 C1 N3 C5 120.754
N2 C1 N3 94.235 N2 C1 H6 112.805
N2 C1 H7 112.805 N2 C4 C5 102.128
N2 C4 H8 123.640 N3 C1 H6 112.805
N3 C1 H7 112.805 N3 C5 C4 102.128
N3 C5 H9 123.640 C4 C5 H9 134.232
C5 C4 H8 134.232 H6 C1 H7 110.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability