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

using model chemistry: MP2=FULL/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=FULL/6-311G**
 hartrees
Energy at 0K-225.724609
Energy at 298.15K-225.730562
HF Energy-224.866707
Nuclear repulsion energy163.026837
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/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' 3699 3509 73.95      
2 A' 3320 3149 0.92      
3 A' 3296 3127 0.81      
4 A' 3290 3121 3.83      
5 A' 1545 1466 8.14      
6 A' 1517 1439 20.47      
7 A' 1480 1404 14.18      
8 A' 1378 1307 7.91      
9 A' 1282 1216 0.81      
10 A' 1197 1136 3.80      
11 A' 1158 1099 2.64      
12 A' 1109 1052 30.19      
13 A' 1091 1035 20.66      
14 A' 940 892 2.19      
15 A' 901 855 6.87      
16 A" 832 789 12.84      
17 A" 791 750 44.15      
18 A" 706 670 25.67      
19 A" 682 647 0.42      
20 A" 643 610 27.75      
21 A" 523 496 78.43      

Unscaled Zero Point Vibrational Energy (zpe) 15689.6 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 14883.1 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/6-311G**
ABC
0.32639 0.31119 0.15931

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.104 0.000
C2 -1.090 0.283 0.000
C3 1.119 0.308 0.000
N4 -0.740 -0.993 0.000
C5 0.633 -0.984 0.000
H6 -0.011 2.112 0.000
H7 -2.101 0.663 0.000
H8 2.118 0.715 0.000
H9 1.202 -1.903 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36471.37312.22382.18201.00782.14662.15303.2378
C21.36472.20881.32262.13882.12371.08033.23643.1664
C31.37312.20882.26901.38012.12833.23921.07852.2120
N42.22381.32262.26901.37383.18922.14343.32932.1445
C52.18202.13881.38011.37383.16213.19222.25601.0801
H61.00782.12372.12833.18923.16212.54292.54574.1934
H72.14661.08033.23922.14343.19222.54294.21874.1821
H82.15303.23641.07853.32932.25602.54574.21872.7731
H93.23783.16642.21202.14451.08014.19344.18212.7731

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 111.680 N1 C2 H7 122.366
N1 C3 C5 104.846 N1 C3 H8 122.392
C2 N1 C3 107.562 C2 N1 H6 126.393
C2 N4 C5 104.954 C3 N1 H6 126.046
C3 C5 N4 110.958 C3 C5 H9 127.668
N4 C2 H7 125.954 N4 C5 H9 121.374
C5 C3 H8 132.762
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability