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

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-226.071763
Energy at 298.15K-226.077902
Nuclear repulsion energy162.215227
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 mPW1PW91/6-31G
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' 3764 3563 81.52      
2 A' 3357 3178 0.31      
3 A' 3339 3161 2.99      
4 A' 3328 3150 1.67      
5 A' 1593 1508 13.15      
6 A' 1504 1424 11.31      
7 A' 1455 1377 10.01      
8 A' 1409 1334 4.24      
9 A' 1306 1236 2.18      
10 A' 1191 1128 0.26      
11 A' 1173 1110 18.59      
12 A' 1093 1035 6.76      
13 A' 1048 992 33.96      
14 A' 965 914 6.30      
15 A' 948 898 10.45      
16 A" 946 896 0.82      
17 A" 891 843 14.19      
18 A" 793 751 89.78      
19 A" 707 669 97.72      
20 A" 672 636 20.83      
21 A" 643 609 31.48      

Unscaled Zero Point Vibrational Energy (zpe) 16062.6 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 15204.9 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 mPW1PW91/6-31G
ABC
0.31781 0.31200 0.15744

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.110 0.727 0.000
C2 1.116 0.313 0.000
H3 1.270 -1.887 0.000
C4 0.669 -0.995 0.000
H5 -1.468 -1.700 0.000
C6 -0.743 -0.904 0.000
N7 -1.158 0.372 0.000
H8 -0.056 2.097 0.000
N9 0.000 1.096 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07612.74542.24484.32313.28643.28742.56332.1419
C21.07612.20601.38263.27592.22282.27542.13451.3634
H32.74542.20601.07582.74472.24043.31684.19923.2425
C42.24481.38261.07582.25061.41532.28213.17582.1955
H54.32313.27592.74472.25061.07602.09464.05053.1579
C63.28642.22282.24041.41531.07601.34223.07902.1342
N73.28742.27543.31682.28212.09461.34222.04701.3662
H82.56332.13454.19923.17584.05053.07902.04701.0024
N92.14191.36343.24252.19553.15792.13421.36621.0024

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 131.450 H1 C2 N9 122.377
C2 C4 H3 127.177 C2 C4 C6 105.205
C2 N9 N7 112.947 C2 N9 H8 128.268
H3 C4 C6 127.618 C4 C2 N9 106.172
C4 C6 H5 128.696 C4 C6 N7 111.680
H5 C6 N7 119.624 C6 N7 N9 103.995
N7 N9 H8 118.786
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.207      
2 C 0.132      
3 H 0.181      
4 C -0.282      
5 H 0.192      
6 C -0.008      
7 N -0.223      
8 H 0.371      
9 N -0.569      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.376 0.787 0.000 2.503
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.719 2.757 0.000
y 2.757 -21.589 0.000
z 0.000 0.000 -31.723
Traceless
 xyz
x -3.063 2.757 0.000
y 2.757 9.132 0.000
z 0.000 0.000 -6.069
Polar
3z2-r2-12.138
x2-y2-8.130
xy2.757
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.700 0.272 0.000
y 0.272 6.905 0.000
z 0.000 0.000 2.275


<r2> (average value of r2) Å2
<r2> 80.572
(<r2>)1/2 8.976