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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-225.196127
Energy at 298.15K-225.202007
HF Energy-224.710848
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/SDD
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' 3686 3558 92.51      
2 A' 3302 3188 1.43      
3 A' 3284 3170 4.90      
4 A' 3267 3154 1.48      
5 A' 1513 1460 13.39      
6 A' 1437 1387 15.96      
7 A' 1403 1354 8.92      
8 A' 1336 1290 3.89      
9 A' 1229 1186 2.15      
10 A' 1145 1105 2.28      
11 A' 1116 1077 14.94      
12 A' 1056 1019 12.19      
13 A' 999 964 22.03      
14 A' 921 889 3.81      
15 A' 908 877 7.29      
16 A" 797 770 0.03      
17 A" 762 736 107.73      
18 A" 691 667 130.92      
19 A" 672 648 13.82      
20 A" 627 605 0.03      
21 A" 594 573 34.46      

Unscaled Zero Point Vibrational Energy (zpe) 15371.7 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 14838.3 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/SDD
ABC
0.30354 0.29738 0.15022

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

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 -1.015 0.000
H5 -1.488 -1.732 0.000
C6 -0.751 -0.935 0.000
N7 -1.195 0.382 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
H11.08502.79252.28864.39733.34783.35762.60502.1751
C21.08502.24091.41543.33992.27512.34022.17641.3955
H32.79252.24091.08592.79042.26913.38734.26843.2992
C42.28861.41541.08592.28791.43802.34233.23642.2436
H54.39733.33992.79042.28791.08572.13474.11943.2178
C63.34782.27512.26911.43801.08571.38993.14412.1887
N73.35762.34023.38732.34232.13471.38992.08441.4046
H82.60502.17644.26843.23644.11943.14412.08441.0142
N92.17511.39553.29922.24363.21782.18871.40461.0142

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 132.049 H1 C2 N9 122.038
C2 C4 H3 126.746 C2 C4 C6 105.747
C2 N9 N7 113.394 C2 N9 H8 128.470
H3 C4 C6 127.507 C4 C2 N9 105.913
C4 C6 H5 129.533 C4 C6 N7 111.836
H5 C6 N7 118.631 C6 N7 N9 103.110
N7 N9 H8 118.136
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability