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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-226.123341
Energy at 298.15K-226.129341
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 B3PW91/6-31G**
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' 3704 3549 76.82      
2 A' 3300 3163 0.68      
3 A' 3282 3145 2.11      
4 A' 3266 3131 4.33      
5 A' 1589 1523 6.24      
6 A' 1509 1446 6.16      
7 A' 1454 1393 14.36      
8 A' 1405 1347 2.91      
9 A' 1295 1241 3.70      
10 A' 1201 1151 2.12      
11 A' 1162 1114 17.39      
12 A' 1068 1024 26.38      
13 A' 1064 1020 19.31      
14 A' 941 902 5.35      
15 A' 918 880 8.90      
16 A" 895 858 4.35      
17 A" 842 807 10.44      
18 A" 757 726 77.85      
19 A" 697 668 24.34      
20 A" 639 613 0.01      
21 A" 536 513 59.11      

Unscaled Zero Point Vibrational Energy (zpe) 15762.1 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 15106.4 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 B3PW91/6-31G**
ABC
0.32311 0.31511 0.15953

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.104 0.729 0.000
C2 1.110 0.305 0.000
H3 1.263 -1.897 0.000
C4 0.662 -0.999 0.000
H5 -1.482 -1.679 0.000
C6 -0.744 -0.888 0.000
N7 -1.144 0.381 0.000
H8 -0.045 2.088 0.000
N9 0.000 1.083 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08042.75672.25064.31903.27473.26692.54312.1335
C21.08042.20721.37953.26412.20472.25582.12461.3551
H32.75672.20721.07972.75342.24643.31454.19433.2360
C42.25061.37951.07972.24911.41082.27413.16802.1850
H54.31903.26412.75342.24911.08182.08794.03213.1340
C63.27472.20472.24641.41081.08181.33093.05712.1061
N73.26692.25583.31452.27412.08791.33092.03041.3422
H82.54312.12464.19433.16804.03213.05712.03041.0068
N92.13351.35513.23602.18503.13402.10611.34221.0068

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 132.011 H1 C2 N9 121.921
C2 C4 H3 127.255 C2 C4 C6 104.391
C2 N9 N7 113.503 C2 N9 H8 127.571
H3 C4 C6 128.354 C4 C2 N9 106.068
C4 C6 H5 128.445 C4 C6 N7 112.058
H5 C6 N7 119.496 C6 N7 N9 103.980
N7 N9 H8 118.927
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.147      
2 C 0.100      
3 H 0.125      
4 C -0.233      
5 H 0.131      
6 C 0.070      
7 N -0.298      
8 H 0.302      
9 N -0.344      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.110 0.913 0.000 2.299
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.065 2.456 0.000
y 2.456 -21.544 0.000
z 0.000 0.000 -31.211
Traceless
 xyz
x -2.687 2.456 0.000
y 2.456 8.594 0.000
z 0.000 0.000 -5.907
Polar
3z2-r2-11.814
x2-y2-7.521
xy2.456
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> 79.582
(<r2>)1/2 8.921