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

using model chemistry: MP2=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-225.749473
Energy at 298.15K-225.755520
HF Energy-224.804336
Nuclear repulsion energy167.268667
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/cc-pVTZ
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 3290 3124 9.51      
2 A1 3130 2972 1.30      
3 A1 1669 1585 19.90      
4 A1 1427 1355 2.29      
5 A1 1401 1330 25.77      
6 A1 1268 1204 3.74      
7 A1 1055 1002 0.79      
8 A1 938 890 12.37      
9 A2 1163 1105 0.00      
10 A2 941 894 0.00      
11 A2 553 525 0.00      
12 B1 3174 3013 2.28      
13 B1 1017 965 22.59      
14 B1 839 796 4.19      
15 B1 365 346 36.19      
16 B2 3274 3108 2.77      
17 B2 1742 1654 0.02      
18 B2 1398 1327 33.18      
19 B2 1258 1194 0.47      
20 B2 1096 1040 36.06      
21 B2 941 893 66.09      

Unscaled Zero Point Vibrational Energy (zpe) 15969.1 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 15161.0 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/cc-pVTZ
ABC
0.36496 0.30598 0.17187

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.197
N2 0.000 0.996 0.283
N3 0.000 -0.996 0.283
C4 0.000 0.721 -0.945
C5 0.000 -0.721 -0.945
H6 -0.891 0.000 1.818
H7 0.891 0.000 1.818
H8 0.000 1.461 -1.723
H9 0.000 -1.461 -1.723

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35231.35232.26002.26001.08561.08563.26503.2650
N21.35231.99261.25792.11122.03512.03512.05883.1718
N31.35231.99262.11121.25792.03512.03513.17182.0588
C42.26001.25792.11121.44272.99052.99051.07352.3168
C52.26002.11121.25791.44272.99052.99052.31681.0735
H61.08562.03512.03512.99052.99051.78203.93213.9321
H71.08562.03512.03512.99052.99051.78203.93213.9321
H83.26502.05883.17181.07352.31683.93213.93212.9215
H93.26503.17182.05882.31681.07353.93213.93212.9215

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 119.917 C1 N3 C5 119.917
N2 C1 N3 94.915 N2 C1 H6 112.724
N2 C1 H7 112.724 N2 C4 C5 102.626
N2 C4 H8 123.839 N3 C1 H6 112.724
N3 C1 H7 112.724 N3 C5 C4 102.626
N3 C5 H9 123.839 C4 C5 H9 133.534
C5 C4 H8 133.534 H6 C1 H7 110.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability