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

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-224.862945
Energy at 298.15K-224.868815
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 BLYP/3-21G
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' 3507 3488 62.39      
2 A' 3226 3208 1.11      
3 A' 3201 3183 2.93      
4 A' 3196 3179 3.44      
5 A' 1479 1471 11.72      
6 A' 1388 1380 8.62      
7 A' 1346 1339 7.64      
8 A' 1305 1298 2.74      
9 A' 1182 1175 1.62      
10 A' 1110 1104 7.15      
11 A' 1088 1082 14.58      
12 A' 1034 1028 7.69      
13 A' 935 930 3.47      
14 A' 918 913 4.18      
15 A' 885 880 22.32      
16 A" 887 882 1.28      
17 A" 830 825 17.39      
18 A" 742 738 78.77      
19 A" 653 650 28.19      
20 A" 628 625 1.56      
21 A" 519 516 80.54      

Unscaled Zero Point Vibrational Energy (zpe) 15028.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 14945.8 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 BLYP/3-21G
ABC
0.30850 0.29986 0.15206

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.135 0.735 0.000
C2 1.131 0.325 0.000
H3 1.303 -1.890 0.000
C4 0.688 -0.999 0.000
H5 -1.446 -1.745 0.000
C6 -0.737 -0.925 0.000
N7 -1.203 0.359 0.000
H8 -0.067 2.136 0.000
N9 0.000 1.120 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08392.75332.25774.35563.31683.35892.61022.1694
C21.08392.22151.39583.30572.24782.33482.17191.3828
H32.75332.22151.08272.75262.25693.36754.25283.2798
C42.25771.39581.08272.26081.42722.32843.22452.2276
H54.35563.30572.75262.26081.08432.11864.11883.2092
C63.31682.24782.25691.42721.08431.36593.13302.1733
N73.35892.33483.36752.32842.11861.36592.10861.4233
H82.61022.17194.25283.22454.11883.13302.10861.0183
N92.16941.38283.27982.22763.20922.17331.42331.0183

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 130.729 H1 C2 N9 122.692
C2 C4 H3 126.889 C2 C4 C6 105.537
C2 N9 N7 112.608 C2 N9 H8 128.881
H3 C4 C6 127.574 C4 C2 N9 106.579
C4 C6 H5 127.838 C4 C6 N7 112.924
H5 C6 N7 119.238 C6 N7 N9 102.352
N7 N9 H8 118.511
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.191      
2 C 0.127      
3 H 0.156      
4 C -0.294      
5 H 0.185      
6 C 0.064      
7 N -0.284      
8 H 0.324      
9 N -0.468      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.043 0.968 0.000 2.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.444 2.405 0.000
y 2.405 -21.722 0.000
z 0.000 0.000 -31.842
Traceless
 xyz
x -2.662 2.405 0.000
y 2.405 8.921 0.000
z 0.000 0.000 -6.259
Polar
3z2-r2-12.518
x2-y2-7.722
xy2.405
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> 82.696
(<r2>)1/2 9.094