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

using model chemistry: B3LYP/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-226.216213
Energy at 298.15K-226.222202
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/cc-pVDZ
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' 3646 3537 78.68      
2 A' 3276 3177 0.71      
3 A' 3257 3159 1.92      
4 A' 3241 3143 4.03      
5 A' 1567 1520 5.18      
6 A' 1483 1438 4.80      
7 A' 1431 1388 13.73      
8 A' 1383 1341 2.58      
9 A' 1270 1232 2.96      
10 A' 1184 1149 1.25      
11 A' 1140 1106 15.48      
12 A' 1046 1015 33.14      
13 A' 1043 1012 14.27      
14 A' 933 905 5.05      
15 A' 917 890 9.45      
16 A" 893 866 3.63      
17 A" 840 814 8.14      
18 A" 752 730 68.17      
19 A" 694 674 22.31      
20 A" 637 618 0.05      
21 A" 527 512 47.42      

Unscaled Zero Point Vibrational Energy (zpe) 15579.2 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 15111.9 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 B3LYP/cc-pVDZ
ABC
0.32068 0.31269 0.15832

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.114 0.732 0.000
C2 1.114 0.305 0.000
H3 1.268 -1.907 0.000
C4 0.664 -1.004 0.000
H5 -1.492 -1.684 0.000
C6 -0.748 -0.890 0.000
N7 -1.148 0.383 0.000
H8 -0.042 2.098 0.000
N9 0.000 1.087 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08682.77112.26164.34073.28953.28052.55202.1435
C21.08682.21731.38433.27902.21282.26372.13301.3611
H32.77112.21731.08622.76902.25783.32884.21323.2510
C42.26161.38431.08622.26111.41672.28213.18082.1936
H54.34073.27902.76902.26111.08852.09594.05033.1472
C63.28952.21282.25781.41671.08851.33453.06972.1134
N73.28052.26373.32882.28212.09591.33452.04011.3464
H82.55202.13304.21323.18084.05033.06972.04011.0117
N92.14351.36113.25102.19363.14722.11341.34641.0117

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 132.103 H1 C2 N9 121.835
C2 C4 H3 127.254 C2 C4 C6 104.367
C2 N9 N7 113.458 C2 N9 H8 127.422
H3 C4 C6 128.379 C4 C2 N9 106.063
C4 C6 H5 128.523 C4 C6 N7 112.055
H5 C6 N7 119.421 C6 N7 N9 104.057
N7 N9 H8 119.121
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H -0.002      
2 C 0.129      
3 H -0.029      
4 C -0.111      
5 H -0.013      
6 C 0.117      
7 N -0.187      
8 H 0.099      
9 N -0.004      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.950 1.019 0.000 2.200
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.524 2.345 0.000
y 2.345 -22.224 0.000
z 0.000 0.000 -31.351
Traceless
 xyz
x -2.737 2.345 0.000
y 2.345 8.213 0.000
z 0.000 0.000 -5.477
Polar
3z2-r2-10.953
x2-y2-7.300
xy2.345
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.114 0.349 -0.000
y 0.349 7.349 -0.000
z -0.000 -0.000 2.855


<r2> (average value of r2) Å2
<r2> 80.345
(<r2>)1/2 8.964