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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-226.152474
Energy at 298.15K-226.158503
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' 3729 3548 80.43      
2 A' 3321 3160 0.46      
3 A' 3301 3141 1.59      
4 A' 3287 3127 4.29      
5 A' 1603 1526 6.39      
6 A' 1523 1449 6.23      
7 A' 1466 1395 15.55      
8 A' 1419 1350 2.48      
9 A' 1306 1242 4.00      
10 A' 1214 1155 2.64      
11 A' 1171 1114 17.26      
12 A' 1077 1025 34.11      
13 A' 1072 1020 12.03      
14 A' 948 902 5.20      
15 A' 924 879 9.14      
16 A" 906 862 4.23      
17 A" 852 811 9.63      
18 A" 765 728 79.93      
19 A" 703 669 24.77      
20 A" 644 613 0.01      
21 A" 544 517 60.30      

Unscaled Zero Point Vibrational Energy (zpe) 15886.2 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 15115.8 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 mPW1PW91/6-31G**
ABC
0.32432 0.31639 0.16015

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 0.728 0.000
C2 1.108 0.305 0.000
H3 1.261 -1.894 0.000
C4 0.661 -0.998 0.000
H5 -1.480 -1.675 0.000
C6 -0.743 -0.886 0.000
N7 -1.141 0.381 0.000
H8 -0.045 2.084 0.000
N9 0.000 1.080 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07882.75292.24704.31233.26943.26002.53802.1296
C21.07882.20411.37723.25882.20092.25042.12031.3523
H32.75292.20411.07812.74982.24353.30834.18723.2306
C42.24701.37721.07812.24621.40912.26953.16232.1811
H54.31233.25882.74982.24621.08022.08424.02463.1283
C63.26942.20092.24351.40911.08021.32773.05122.1019
N73.26002.25043.30832.26952.08421.32772.02591.3386
H82.53802.12034.18723.16234.02463.05122.02591.0050
N92.12961.35233.23062.18113.12832.10191.33861.0050

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 132.005 H1 C2 N9 121.917
C2 C4 H3 127.295 C2 C4 C6 104.348
C2 N9 N7 113.498 C2 N9 H8 127.554
H3 C4 C6 128.357 C4 C2 N9 106.078
C4 C6 H5 128.449 C4 C6 N7 112.012
H5 C6 N7 119.539 C6 N7 N9 104.064
N7 N9 H8 118.948
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 0.152      
2 C 0.100      
3 H 0.130      
4 C -0.243      
5 H 0.135      
6 C 0.070      
7 N -0.300      
8 H 0.304      
9 N -0.349      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.121 0.909 0.000 2.307
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.031 2.474 0.000
y 2.474 -21.522 0.000
z 0.000 0.000 -31.239
Traceless
 xyz
x -2.650 2.474 0.000
y 2.474 8.612 0.000
z 0.000 0.000 -5.962
Polar
3z2-r2-11.925
x2-y2-7.508
xy2.474
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> 79.338
(<r2>)1/2 8.907