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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-226.162066
Energy at 298.15K-226.168096
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 mPW1PW91/6-31+G**
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' 3726 3547 92.57      
2 A' 3319 3159 0.13      
3 A' 3301 3142 1.28      
4 A' 3290 3131 2.44      
5 A' 1594 1517 6.92      
6 A' 1514 1441 6.91      
7 A' 1459 1388 15.93      
8 A' 1414 1346 2.90      
9 A' 1303 1240 4.03      
10 A' 1210 1152 3.00      
11 A' 1166 1110 20.40      
12 A' 1073 1021 39.53      
13 A' 1068 1017 11.04      
14 A' 946 900 3.49      
15 A' 923 878 8.64      
16 A" 904 860 6.13      
17 A" 852 811 9.11      
18 A" 761 725 110.89      
19 A" 697 663 21.95      
20 A" 639 609 0.01      
21 A" 554 527 61.16      

Unscaled Zero Point Vibrational Energy (zpe) 15856.5 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 15092.2 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 mPW1PW91/6-31+G**
ABC
0.32338 0.31643 0.15994

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.101 0.728 0.000
C2 1.108 0.306 0.000
H3 1.261 -1.895 0.000
C4 0.661 -0.999 0.000
H5 -1.483 -1.676 0.000
C6 -0.745 -0.888 0.000
N7 -1.140 0.381 0.000
H8 -0.046 2.087 0.000
N9 0.000 1.082 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07902.75482.24864.31593.27263.25962.54072.1305
C21.07902.20621.37903.26222.20402.24952.12251.3532
H32.75482.20621.07842.75312.24473.30824.19103.2334
C42.24861.37901.07842.24891.41052.26893.16572.1836
H54.31593.26222.75312.24891.08012.08484.02753.1314
C63.27262.20402.24471.41051.08011.32843.05522.1058
N73.25962.24953.30822.26892.08481.32842.02661.3385
H82.54072.12254.19103.16574.02753.05522.02661.0056
N92.13051.35323.23342.18363.13142.10581.33851.0056

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 131.979 H1 C2 N9 121.913
C2 C4 H3 127.305 C2 C4 C6 104.384
C2 N9 N7 113.378 C2 N9 H8 127.651
H3 C4 C6 128.311 C4 C2 N9 106.107
C4 C6 H5 128.617 C4 C6 N7 111.834
H5 C6 N7 119.549 C6 N7 N9 104.296
N7 N9 H8 118.971
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.179      
2 C -0.252      
3 H 0.168      
4 C 0.035      
5 H 0.166      
6 C -0.258      
7 N -0.165      
8 H 0.338      
9 N -0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.256 0.850 0.000 2.410
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.993 2.713 0.000
y 2.713 -22.037 0.000
z 0.000 0.000 -32.384
Traceless
 xyz
x -2.783 2.713 0.000
y 2.713 9.152 0.000
z 0.000 0.000 -6.369
Polar
3z2-r2-12.738
x2-y2-7.957
xy2.713
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 79.970
(<r2>)1/2 8.943