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

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-226.126870
Energy at 298.15K-226.132947
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/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' 3717 3575 70.31      
2 A' 3322 3195 0.79      
3 A' 3305 3179 4.52      
4 A' 3294 3169 1.89      
5 A' 1572 1513 12.17      
6 A' 1477 1421 11.12      
7 A' 1431 1376 8.47      
8 A' 1390 1337 5.23      
9 A' 1283 1234 2.10      
10 A' 1170 1125 1.13      
11 A' 1152 1108 18.51      
12 A' 1081 1040 5.77      
13 A' 1018 980 27.46      
14 A' 952 916 8.27      
15 A' 941 905 11.83      
16 A" 927 892 1.00      
17 A" 874 841 12.66      
18 A" 779 749 81.70      
19 A" 690 664 60.25      
20 A" 655 630 13.48      
21 A" 620 597 63.65      

Unscaled Zero Point Vibrational Energy (zpe) 15824.0 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 15222.7 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/6-31G
ABC
0.31513 0.30914 0.15605

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.116 0.729 0.000
C2 1.121 0.315 0.000
H3 1.276 -1.889 0.000
C4 0.673 -0.996 0.000
H5 -1.467 -1.709 0.000
C6 -0.744 -0.910 0.000
N7 -1.167 0.370 0.000
H8 -0.059 2.106 0.000
N9 0.000 1.103 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07772.75002.24954.33423.29643.30242.57372.1487
C21.07772.20991.38603.28572.23122.28842.14471.3701
H32.75002.20991.07752.74952.24523.32744.21273.2531
C42.24951.38601.07752.25581.41972.29163.18782.2046
H54.33423.28572.74952.25581.07792.10024.06703.1716
C63.29642.23122.24521.41971.07791.34753.09302.1458
N73.30242.28843.32742.29162.10021.34752.06011.3781
H82.57372.14474.21273.18784.06703.09302.06011.0051
N92.14871.37013.25312.20463.17162.14581.37811.0051

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 131.462 H1 C2 N9 122.296
C2 C4 H3 127.102 C2 C4 C6 105.355
C2 N9 N7 112.756 C2 N9 H8 128.436
H3 C4 C6 127.543 C4 C2 N9 106.242
C4 C6 H5 128.649 C4 C6 N7 111.789
H5 C6 N7 119.562 C6 N7 N9 103.858
N7 N9 H8 118.808
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.167      
2 C 0.145      
3 H 0.139      
4 C -0.217      
5 H 0.152      
6 C 0.011      
7 N -0.214      
8 H 0.344      
9 N -0.527      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.339 0.784 0.000 2.467
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.972 2.684 0.000
y 2.684 -21.888 0.000
z 0.000 0.000 -31.590
Traceless
 xyz
x -3.233 2.684 0.000
y 2.684 8.893 0.000
z 0.000 0.000 -5.660
Polar
3z2-r2-11.321
x2-y2-8.084
xy2.684
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.753 0.297 -0.000
y 0.297 7.012 -0.000
z -0.000 -0.000 2.249


<r2> (average value of r2) Å2
<r2> 81.194
(<r2>)1/2 9.011