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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-226.163771
Energy at 298.15K-226.169773
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 B3PW91/6-311G*
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' 3694 3556 63.36      
2 A' 3278 3156 1.84      
3 A' 3260 3138 4.37      
4 A' 3246 3125 5.08      
5 A' 1585 1526 6.04      
6 A' 1507 1450 6.24      
7 A' 1444 1390 14.65      
8 A' 1400 1348 3.53      
9 A' 1294 1246 3.51      
10 A' 1200 1155 2.00      
11 A' 1157 1114 18.79      
12 A' 1063 1023 28.38      
13 A' 1059 1019 21.70      
14 A' 945 910 4.53      
15 A' 925 891 9.64      
16 A" 888 855 5.36      
17 A" 836 805 13.68      
18 A" 748 720 99.30      
19 A" 699 673 22.27      
20 A" 642 618 0.24      
21 A" 539 518 63.80      

Unscaled Zero Point Vibrational Energy (zpe) 15703.9 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 15118.2 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 B3PW91/6-311G*
ABC
0.32396 0.31621 0.16002

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.102 0.728 0.000
C2 1.109 0.304 0.000
H3 1.261 -1.895 0.000
C4 0.661 -0.998 0.000
H5 -1.485 -1.674 0.000
C6 -0.744 -0.886 0.000
N7 -1.141 0.381 0.000
H8 -0.046 2.086 0.000
N9 0.000 1.081 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07992.75502.24884.31673.27193.26152.54142.1315
C21.07992.20521.37763.26182.20222.25102.12311.3539
H32.75502.20521.07942.75482.24503.30914.19053.2330
C42.24881.37761.07942.24951.40952.26903.16422.1823
H54.31673.26182.75482.24951.08132.08294.02543.1298
C63.27192.20222.24501.40951.08131.32723.05262.1034
N73.26152.25103.30912.26902.08291.32722.02641.3390
H82.54142.12314.19053.16424.02543.05262.02641.0055
N92.13151.35393.23302.18233.12982.10341.33901.0055

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 132.065 H1 C2 N9 121.879
C2 C4 H3 127.250 C2 C4 C6 104.395
C2 N9 N7 113.414 C2 N9 H8 127.660
H3 C4 C6 128.355 C4 C2 N9 106.056
C4 C6 H5 128.662 C4 C6 N7 111.971
H5 C6 N7 119.367 C6 N7 N9 104.163
N7 N9 H8 118.926
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.227      
2 C 0.060      
3 H 0.205      
4 C -0.445      
5 H 0.211      
6 C -0.017      
7 N -0.194      
8 H 0.365      
9 N -0.410      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.107 0.957 0.000 2.314
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.338 2.547 0.000
y 2.547 -21.719 0.000
z 0.000 0.000 -31.891
Traceless
 xyz
x -2.533 2.547 0.000
y 2.547 8.895 0.000
z 0.000 0.000 -6.363
Polar
3z2-r2-12.726
x2-y2-7.619
xy2.547
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> 79.637
(<r2>)1/2 8.924