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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-226.144185
Energy at 298.15K-226.150190
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 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' 3713 3521 74.07      
2 A' 3324 3153 0.67      
3 A' 3307 3136 2.41      
4 A' 3293 3123 4.85      
5 A' 1607 1524 6.69      
6 A' 1528 1449 6.31      
7 A' 1467 1391 15.42      
8 A' 1422 1348 2.80      
9 A' 1311 1243 4.17      
10 A' 1216 1153 2.73      
11 A' 1175 1114 17.18      
12 A' 1079 1023 30.88      
13 A' 1075 1019 14.98      
14 A' 949 900 5.18      
15 A' 926 878 9.07      
16 A" 901 854 4.52      
17 A" 847 803 10.87      
18 A" 763 723 82.84      
19 A" 704 667 23.64      
20 A" 644 611 0.06      
21 A" 531 503 62.60      

Unscaled Zero Point Vibrational Energy (zpe) 15889.5 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 15068.0 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
0.32427 0.31626 0.16011

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 2.100 0.730 0.000
C2 1.108 0.305 0.000
H3 1.261 -1.895 0.000
C4 0.661 -0.998 0.000
H5 -1.481 -1.675 0.000
C6 -0.743 -0.886 0.000
N7 -1.141 0.381 0.000
H8 -0.047 2.085 0.000
N9 0.000 1.080 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07942.75552.24874.31433.27053.26062.53992.1295
C21.07942.20521.37763.25982.20122.25092.12251.3524
H32.75552.20521.07892.75142.24423.30954.18993.2314
C42.24871.37761.07892.24721.40922.26993.16402.1810
H54.31433.25982.75142.24721.08082.08414.02473.1283
C63.27052.20122.24421.40921.08081.32783.05152.1017
N73.26062.25093.30952.26992.08411.32782.02531.3386
H82.53992.12254.18993.16404.02473.05152.02531.0063
N92.12951.35243.23142.18103.12832.10171.33861.0063

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 132.098 H1 C2 N9 121.849
C2 C4 H3 127.298 C2 C4 C6 104.346
C2 N9 N7 113.536 C2 N9 H8 127.675
H3 C4 C6 128.357 C4 C2 N9 106.053
C4 C6 H5 128.500 C4 C6 N7 112.027
H5 C6 N7 119.473 C6 N7 N9 104.038
N7 N9 H8 118.789
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.193      
2 C 0.055      
3 H 0.175      
4 C -0.287      
5 H 0.177      
6 C 0.019      
7 N -0.280      
8 H 0.370      
9 N -0.422      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.127 0.912 0.000 2.314
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.002 2.472 0.000
y 2.472 -21.483 0.000
z 0.000 0.000 -31.301
Traceless
 xyz
x -2.610 2.472 0.000
y 2.472 8.669 0.000
z 0.000 0.000 -6.058
Polar
3z2-r2-12.116
x2-y2-7.519
xy2.472
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 79.359
(<r2>)1/2 8.908