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

using model chemistry: B3LYP/SDD

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/SDD
 hartrees
Energy at 0K-226.159849
Energy at 298.15K-226.165885
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/SDD
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' 3705 3562 76.57      
2 A' 3321 3192 0.96      
3 A' 3298 3170 3.36      
4 A' 3289 3162 1.40      
5 A' 1551 1491 10.43      
6 A' 1451 1395 13.22      
7 A' 1415 1360 9.47      
8 A' 1374 1321 3.74      
9 A' 1273 1223 2.07      
10 A' 1164 1119 1.31      
11 A' 1141 1097 20.02      
12 A' 1063 1022 10.64      
13 A' 1024 985 39.08      
14 A' 933 897 4.29      
15 A' 922 886 11.90      
16 A" 925 889 0.57      
17 A" 871 837 12.49      
18 A" 783 753 137.61      
19 A" 680 653 59.48      
20 A" 644 619 7.39      
21 A" 609 586 58.12      

Unscaled Zero Point Vibrational Energy (zpe) 15716.5 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 15108.2 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/SDD
ABC
0.31147 0.30589 0.15433

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.125 0.729 0.000
C2 1.127 0.317 0.000
H3 1.281 -1.899 0.000
C4 0.677 -1.005 0.000
H5 -1.477 -1.712 0.000
C6 -0.749 -0.915 0.000
N7 -1.171 0.374 0.000
H8 -0.062 2.117 0.000
N9 0.000 1.109 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07962.76042.25914.35153.31043.31522.58992.1586
C21.07962.22111.39623.30142.24382.29922.15771.3781
H32.76042.22111.07912.76482.25593.34404.23493.2700
C42.25911.39621.07912.26741.42852.30613.20852.2202
H54.35153.30142.76482.26741.08032.10864.08283.1850
C63.31042.24382.25591.42851.08031.35633.10892.1581
N73.31522.29923.34402.30612.10861.35632.06651.3830
H82.58992.15774.23493.20854.08283.10892.06651.0097
N92.15861.37813.27002.22023.18502.15811.38301.0097

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 131.271 H1 C2 N9 122.416
C2 C4 H3 127.147 C2 C4 C6 105.183
C2 N9 N7 112.757 C2 N9 H8 128.617
H3 C4 C6 127.670 C4 C2 N9 106.313
C4 C6 H5 128.794 C4 C6 N7 111.784
H5 C6 N7 119.422 C6 N7 N9 103.962
N7 N9 H8 118.626
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.261      
2 C -0.175      
3 H 0.250      
4 C -0.284      
5 H 0.253      
6 C -0.273      
7 N -0.052      
8 H 0.333      
9 N -0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.374 0.794 0.000 2.504
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.133 2.829 0.000
y 2.829 -21.652 0.000
z 0.000 0.000 -32.355
Traceless
 xyz
x -3.129 2.829 0.000
y 2.829 9.593 0.000
z 0.000 0.000 -6.463
Polar
3z2-r2-12.927
x2-y2-8.481
xy2.829
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.980 0.276 0.001
y 0.276 7.129 -0.002
z 0.001 -0.002 2.732


<r2> (average value of r2) Å2
<r2> 82.029
(<r2>)1/2 9.057