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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-225.191689
Energy at 298.15K-225.197570
HF Energy-224.710431
Nuclear repulsion energy 
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/LANL2DZ
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' 3687 3551 92.17      
2 A' 3303 3181 1.51      
3 A' 3285 3163 5.19      
4 A' 3268 3148 1.53      
5 A' 1513 1458 13.51      
6 A' 1438 1385 15.82      
7 A' 1403 1351 8.91      
8 A' 1337 1287 3.90      
9 A' 1230 1184 2.08      
10 A' 1145 1103 2.29      
11 A' 1116 1075 15.03      
12 A' 1056 1017 12.21      
13 A' 999 963 22.21      
14 A' 921 887 3.80      
15 A' 909 875 7.37      
16 A" 799 769 0.04      
17 A" 763 735 106.54      
18 A" 691 666 132.90      
19 A" 672 647 13.45      
20 A" 627 604 0.01      
21 A" 595 573 34.93      

Unscaled Zero Point Vibrational Energy (zpe) 15378.1 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 14810.6 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/LANL2DZ
ABC
0.30344 0.29733 0.15018

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.143 0.749 0.000
C2 1.145 0.323 0.000
H3 1.297 -1.913 0.000
C4 0.685 -1.016 0.000
H5 -1.488 -1.732 0.000
C6 -0.751 -0.935 0.000
N7 -1.194 0.383 0.000
H8 -0.064 2.133 0.000
N9 0.000 1.121 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08512.79322.28904.39803.34843.35772.60542.1753
C21.08512.24151.41583.34042.27562.34022.17671.3957
H32.79322.24151.08602.79092.26953.38764.26913.2998
C42.28901.41581.08602.28831.43852.34253.23692.2441
H54.39803.34042.79092.28831.08582.13494.11963.2181
C63.34842.27562.26951.43851.08581.38993.14432.1890
N73.35772.34023.38762.34252.13491.38992.08431.4045
H82.60542.17674.26913.23694.11963.14432.08431.0142
N92.17531.39573.29982.24413.21812.18901.40451.0142

picture of 1H-Pyrazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 132.050 H1 C2 N9 122.036
C2 C4 H3 126.759 C2 C4 C6 105.737
C2 N9 N7 113.389 C2 N9 H8 128.477
H3 C4 C6 127.504 C4 C2 N9 105.914
C4 C6 H5 129.533 C4 C6 N7 111.824
H5 C6 N7 118.644 C6 N7 N9 103.137
N7 N9 H8 118.134
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability