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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-226.054040
Energy at 298.15K-226.059957
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/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' 3603 3576 52.23      
2 A' 3235 3210 2.01      
3 A' 3218 3193 7.43      
4 A' 3208 3183 2.21      
5 A' 1510 1499 10.54      
6 A' 1420 1409 9.11      
7 A' 1379 1368 7.07      
8 A' 1333 1323 4.17      
9 A' 1221 1212 2.19      
10 A' 1124 1115 3.48      
11 A' 1113 1104 14.91      
12 A' 1046 1039 6.87      
13 A' 959 952 14.37      
14 A' 912 905 7.04      
15 A' 907 900 16.35      
16 A" 875 868 2.08      
17 A" 825 818 16.39      
18 A" 739 734 76.75      
19 A" 662 657 39.23      
20 A" 626 621 3.30      
21 A" 568 564 73.26      

Unscaled Zero Point Vibrational Energy (zpe) 15240.6 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 15124.8 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/6-31G
ABC
0.30951 0.30254 0.15299

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.133 0.739 0.000
C2 1.132 0.320 0.000
H3 1.292 -1.900 0.000
C4 0.681 -1.003 0.000
H5 -1.470 -1.728 0.000
C6 -0.744 -0.921 0.000
N7 -1.186 0.370 0.000
H8 -0.063 2.125 0.000
N9 0.000 1.114 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08522.76922.26774.36653.32153.33952.59632.1653
C21.08522.22561.39783.31112.24922.31842.16431.3820
H32.76922.22561.08512.76762.25963.36094.24673.2787
C42.26771.39781.08512.26991.42762.31793.21542.2235
H54.36653.31112.76762.26991.08552.11734.10223.1994
C63.32152.24922.25961.42761.08551.36463.12132.1663
N73.33952.31843.36092.31792.11731.36462.08391.4000
H82.59632.16434.24673.21544.10223.12132.08391.0135
N92.16531.38203.27872.22353.19942.16631.40001.0135

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 131.510 H1 C2 N9 122.256
C2 C4 H3 126.906 C2 C4 C6 105.502
C2 N9 N7 112.888 C2 N9 H8 128.581
H3 C4 C6 127.593 C4 C2 N9 106.234
C4 C6 H5 128.653 C4 C6 N7 112.205
H5 C6 N7 119.142 C6 N7 N9 103.172
N7 N9 H8 118.531
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.136      
2 C 0.144      
3 H 0.107      
4 C -0.164      
5 H 0.124      
6 C 0.016      
7 N -0.203      
8 H 0.319      
9 N -0.479      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.251 0.816 0.000 2.394
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.065 2.557 0.000
y 2.557 -22.032 0.000
z 0.000 0.000 -31.521
Traceless
 xyz
x -3.288 2.557 0.000
y 2.557 8.761 0.000
z 0.000 0.000 -5.473
Polar
3z2-r2-10.946
x2-y2-8.033
xy2.557
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> 82.469
(<r2>)1/2 9.081