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

using model chemistry: PBEPBE/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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-225.949071
Energy at 298.15K-225.954959
Nuclear repulsion energy161.848307
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 PBEPBE/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' 3560 3540 67.20      
2 A' 3213 3195 0.77      
3 A' 3192 3173 1.50      
4 A' 3176 3157 3.33      
5 A' 1519 1510 4.08      
6 A' 1443 1435 3.50      
7 A' 1403 1395 10.65      
8 A' 1340 1332 1.85      
9 A' 1233 1226 4.01      
10 A' 1160 1153 1.21      
11 A' 1116 1109 12.39      
12 A' 1020 1014 32.98      
13 A' 1016 1010 13.25      
14 A' 903 898 4.26      
15 A' 885 880 8.52      
16 A" 852 847 4.38      
17 A" 799 794 13.26      
18 A" 721 717 66.38      
19 A" 678 674 21.70      
20 A" 620 616 0.12      
21 A" 515 512 40.58      

Unscaled Zero Point Vibrational Energy (zpe) 15179.9 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 15091.8 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 PBEPBE/cc-pVDZ
ABC
0.31820 0.30931 0.15685

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.127 0.737 0.000
C2 1.120 0.307 0.000
H3 1.275 -1.918 0.000
C4 0.666 -1.009 0.000
H5 -1.500 -1.692 0.000
C6 -0.749 -0.893 0.000
N7 -1.155 0.388 0.000
H8 -0.042 2.107 0.000
N9 0.000 1.089 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.09442.78872.27684.36503.30593.30022.56532.1556
C21.09442.23021.39243.29562.22162.27702.14321.3664
H32.78872.23021.09362.78352.26823.35014.23533.2660
C42.27681.39241.09362.27101.41992.29583.19622.2015
H54.36503.29562.78352.27101.09612.10894.06953.1596
C63.30592.22162.26821.41991.09611.34473.08302.1191
N73.30022.27703.35012.29582.10891.34472.04771.3508
H82.56532.14324.23533.19624.06953.08302.04771.0193
N92.15561.36643.26602.20153.15962.11911.35081.0193

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 132.202 H1 C2 N9 121.927
C2 C4 H3 127.157 C2 C4 C6 104.362
C2 N9 N7 113.852 C2 N9 H8 127.280
H3 C4 C6 128.481 C4 C2 N9 105.871
C4 C6 H5 128.549 C4 C6 N7 112.256
H5 C6 N7 119.195 C6 N7 N9 103.658
N7 N9 H8 118.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.006      
2 C 0.125      
3 H -0.022      
4 C -0.129      
5 H -0.003      
6 C 0.111      
7 N -0.187      
8 H 0.101      
9 N -0.003      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.877 1.070 0.000 2.160
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.461 2.267 0.000
y 2.267 -22.177 0.000
z 0.000 0.000 -31.399
Traceless
 xyz
x -2.672 2.267 0.000
y 2.267 8.253 0.000
z 0.000 0.000 -5.581
Polar
3z2-r2-11.162
x2-y2-7.284
xy2.267
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.347 0.345 0.000
y 0.345 7.514 0.000
z 0.000 0.000 2.909


<r2> (average value of r2) Å2
<r2> 80.937
(<r2>)1/2 8.997