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

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-226.126836
Energy at 298.15K-226.132652
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 BLYP/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' 3571 3543 52.25      
2 A' 3205 3180 2.20      
3 A' 3187 3163 3.96      
4 A' 3174 3149 6.03      
5 A' 1519 1508 5.16      
6 A' 1434 1423 6.20      
7 A' 1388 1378 9.21      
8 A' 1333 1323 4.96      
9 A' 1235 1225 1.62      
10 A' 1133 1125 0.51      
11 A' 1112 1103 14.50      
12 A' 1032 1024 6.62      
13 A' 1005 997 31.12      
14 A' 908 901 6.60      
15 A' 892 885 8.44      
16 A" 849 843 4.79      
17 A" 796 789 13.16      
18 A" 721 716 58.28      
19 A" 667 662 21.54      
20 A" 615 610 0.00      
21 A" 464 460 51.35      

Unscaled Zero Point Vibrational Energy (zpe) 15119.2 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 15002.7 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 BLYP/6-31G**
ABC
0.31595 0.30733 0.15579

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.123 0.738 0.000
C2 1.124 0.310 0.000
H3 1.280 -1.906 0.000
C4 0.672 -1.006 0.000
H5 -1.484 -1.702 0.000
C6 -0.746 -0.901 0.000
N7 -1.167 0.380 0.000
H8 -0.050 2.111 0.000
N9 0.000 1.097 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08682.77562.26884.35413.30433.30892.57102.1532
C21.08682.22241.39213.29352.22822.29142.14971.3717
H32.77562.22241.08622.77072.26143.34854.23203.2646
C42.26881.39211.08622.26481.42182.30253.19992.2078
H54.35413.29352.77072.26481.08842.10594.07323.1675
C63.30432.22822.26141.42181.08841.34873.09162.1329
N73.30892.29143.34852.30252.10591.34872.05941.3690
H82.57102.14974.23203.19994.07323.09162.05941.0155
N92.15321.37173.26462.20783.16752.13291.36901.0155

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 132.102 H1 C2 N9 121.860
C2 C4 H3 127.033 C2 C4 C6 104.712
C2 N9 N7 113.452 C2 N9 H8 127.832
H3 C4 C6 128.254 C4 C2 N9 106.038
C4 C6 H5 128.421 C4 C6 N7 112.397
H5 C6 N7 119.182 C6 N7 N9 103.402
N7 N9 H8 118.717
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.087      
2 C 0.130      
3 H 0.061      
4 C -0.138      
5 H 0.073      
6 C 0.107      
7 N -0.289      
8 H 0.258      
9 N -0.290      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.024 0.912 0.000 2.220
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.484 2.311 0.000
y 2.311 -22.068 0.000
z 0.000 0.000 -31.113
Traceless
 xyz
x -2.893 2.311 0.000
y 2.311 8.230 0.000
z 0.000 0.000 -5.337
Polar
3z2-r2-10.674
x2-y2-7.416
xy2.311
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> 81.201
(<r2>)1/2 9.011