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

using model chemistry: MP2=FULL/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=FULL/6-31G*
 hartrees
Energy at 0K-225.525344
Energy at 298.15K-225.531289
HF Energy-224.789664
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=FULL/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' 3678 3465 90.34      
2 A' 3333 3140 0.17      
3 A' 3315 3124 1.41      
4 A' 3306 3114 2.22      
5 A' 1580 1489 5.83      
6 A' 1528 1440 6.96      
7 A' 1488 1402 12.41      
8 A' 1400 1319 3.25      
9 A' 1312 1236 2.62      
10 A' 1207 1137 0.89      
11 A' 1184 1116 12.38      
12 A' 1090 1027 13.99      
13 A' 1082 1020 26.73      
14 A' 944 889 3.97      
15 A' 922 869 7.70      
16 A" 839 791 16.27      
17 A" 798 752 30.52      
18 A" 724 682 65.88      
19 A" 700 659 34.45      
20 A" 625 589 0.36      
21 A" 530 500 47.27      

Unscaled Zero Point Vibrational Energy (zpe) 15792.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 14879.3 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=FULL/6-31G*
ABC
0.32113 0.31340 0.15861

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.108 0.733 0.000
C2 1.115 0.307 0.000
H3 1.264 -1.896 0.000
C4 0.661 -1.000 0.000
H5 -1.478 -1.686 0.000
C6 -0.739 -0.896 0.000
N7 -1.152 0.386 0.000
H8 -0.051 2.095 0.000
N9 0.000 1.084 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08072.76182.25784.32593.28053.27812.55242.1369
C21.08072.20851.38373.27062.21042.26772.13411.3588
H32.76182.20851.08022.74972.23873.32284.20203.2373
C42.25781.38371.08022.24631.40402.28153.17552.1864
H54.32593.27062.74972.24631.08162.09764.04143.1402
C63.28052.21042.23871.40401.08161.34673.06922.1140
N73.27812.26773.32282.28152.09761.34672.03281.3470
H82.55242.13414.20203.17554.04143.06922.03281.0119
N92.13691.35883.23732.18643.14022.11401.34701.0119

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 132.368 H1 C2 N9 121.901
C2 C4 H3 126.935 C2 C4 C6 104.915
C2 N9 N7 113.885 C2 N9 H8 127.772
H3 C4 C6 128.150 C4 C2 N9 105.731
C4 C6 H5 128.844 C4 C6 N7 112.065
H5 C6 N7 119.092 C6 N7 N9 103.404
N7 N9 H8 118.343
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability