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

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-39.070186
Energy at 298.15K-39.076210
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 B3LYP/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3672 3578 56.74      
2 A' 3265 3182 3.01      
3 A' 3243 3161 8.46      
4 A' 3234 3152 1.59      
5 A' 1536 1497 9.77      
6 A' 1443 1406 11.51      
7 A' 1399 1363 11.06      
8 A' 1357 1322 3.70      
9 A' 1255 1223 1.89      
10 A' 1147 1118 0.75      
11 A' 1125 1096 20.54      
12 A' 1054 1027 7.63      
13 A' 1013 987 37.25      
14 A' 924 901 3.05      
15 A' 913 890 12.88      
16 A" 903 880 2.78      
17 A" 860 838 15.30      
18 A" 768 749 120.38      
19 A" 670 653 48.16      
20 A" 633 617 6.63      
21 A" 583 568 54.98      

Unscaled Zero Point Vibrational Energy (zpe) 15498.5 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 15103.3 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 B3LYP/CEP-121G
ABC
0.30916 0.30261 0.15293

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.126 0.709 0.000
C2 1.126 0.299 0.000
H3 1.263 -1.922 0.000
C4 0.665 -1.023 0.000
H5 -1.503 -1.714 0.000
C6 -0.766 -0.922 0.000
N7 -1.187 0.374 0.000
H8 -0.050 2.113 0.000
N9 0.000 1.105 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08112.76932.26664.36413.32123.32992.58962.1628
C21.08112.22561.40063.31142.25252.31392.16161.3846
H32.76932.22561.08022.77462.26263.35784.24363.2802
C42.26661.40061.08022.27531.43452.31923.21672.2295
H54.36413.31142.77462.27531.08122.11144.09383.1946
C63.32122.25252.26261.43451.08121.36283.11932.1676
N73.32992.31393.35782.31922.11141.36282.07811.3939
H82.58962.16164.24363.21674.09383.11932.07811.0095
N92.16281.38463.28022.22953.19462.16761.39391.0095

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 131.522 H1 C2 N9 122.123
C2 C4 H3 127.099 C2 C4 C6 105.214
C2 N9 N7 112.772 C2 N9 H8 128.408
H3 C4 C6 127.687 C4 C2 N9 106.355
C4 C6 H5 128.947 C4 C6 N7 111.985
H5 C6 N7 119.068 C6 N7 N9 103.674
N7 N9 H8 118.820
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.186      
2 C -0.235      
3 H 0.182      
4 C 0.019      
5 H 0.161      
6 C -0.396      
7 N 0.044      
8 H 0.334      
9 N -0.293      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.391 0.776 0.000 2.514
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.414 2.892 0.000
y 2.892 -22.030 0.000
z 0.000 0.000 -32.436
Traceless
 xyz
x -3.181 2.892 0.000
y 2.892 9.395 0.000
z 0.000 0.000 -6.213
Polar
3z2-r2-12.427
x2-y2-8.384
xy2.892
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.511 0.295 0.000
y 0.295 7.622 0.001
z 0.000 0.001 3.490


<r2> (average value of r2) Å2
<r2> 68.634
(<r2>)1/2 8.285