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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-225.536720
Energy at 298.15K-225.542682
HF Energy-224.799493
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 MP2/6-31G**
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' 3741 3504 88.77      
2 A' 3366 3152 0.30      
3 A' 3346 3134 1.51      
4 A' 3336 3124 2.65      
5 A' 1584 1483 5.33      
6 A' 1532 1435 6.60      
7 A' 1490 1396 11.58      
8 A' 1403 1314 3.32      
9 A' 1308 1225 2.28      
10 A' 1204 1128 0.76      
11 A' 1180 1105 11.94      
12 A' 1089 1020 12.97      
13 A' 1081 1012 24.24      
14 A' 941 881 4.01      
15 A' 918 860 7.26      
16 A" 845 792 13.17      
17 A" 807 756 26.96      
18 A" 729 682 60.89      
19 A" 698 654 36.68      
20 A" 621 581 0.56      
21 A" 533 499 42.12      

Unscaled Zero Point Vibrational Energy (zpe) 15875.5 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 14867.4 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 MP2/6-31G**
ABC
0.32107 0.31305 0.15850

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.105 0.732 0.000
C2 1.116 0.307 0.000
H3 1.261 -1.894 0.000
C4 0.661 -1.001 0.000
H5 -1.475 -1.684 0.000
C6 -0.740 -0.897 0.000
N7 -1.152 0.387 0.000
H8 -0.046 2.091 0.000
N9 0.000 1.085 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07632.75732.25494.31853.27773.27532.54372.1341
C21.07632.20521.38443.26732.21182.26972.12851.3603
H32.75732.20521.07562.74452.23613.32064.19313.2346
C42.25491.38441.07562.24301.40542.28383.17132.1882
H54.31853.26732.74452.24301.07712.09564.03613.1372
C63.27772.21182.23611.40541.07711.34783.06682.1151
N73.27532.26973.32062.28382.09561.34782.03191.3475
H82.54372.12854.19313.17134.03613.06682.03191.0067
N92.13411.36033.23462.18823.13722.11511.34751.0067

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 132.408 H1 C2 N9 121.861
C2 C4 H3 126.934 C2 C4 C6 104.900
C2 N9 N7 113.899 C2 N9 H8 127.485
H3 C4 C6 128.166 C4 C2 N9 105.731
C4 C6 H5 128.768 C4 C6 N7 112.077
H5 C6 N7 119.155 C6 N7 N9 103.393
N7 N9 H8 118.616
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability