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

using model chemistry: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-226.134855
Energy at 298.15K-226.140869
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 B3PW91/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3666 3538 86.15      
2 A' 3291 3176 0.33      
3 A' 3271 3157 1.36      
4 A' 3255 3141 3.23      
5 A' 1577 1521 5.09      
6 A' 1499 1446 4.44      
7 A' 1448 1397 14.75      
8 A' 1396 1347 1.57      
9 A' 1278 1233 4.10      
10 A' 1203 1161 2.53      
11 A' 1151 1110 14.73      
12 A' 1056 1019 40.65      
13 A' 1049 1012 9.02      
14 A' 934 901 4.56      
15 A' 915 883 9.27      
16 A" 895 863 4.04      
17 A" 841 812 9.16      
18 A" 754 728 75.67      
19 A" 699 674 22.86      
20 A" 639 617 0.10      
21 A" 545 526 48.17      

Unscaled Zero Point Vibrational Energy (zpe) 15679.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 15130.8 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 B3PW91/cc-pVDZ
ABC
0.32246 0.31432 0.15917

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.111 0.731 0.000
C2 1.111 0.304 0.000
H3 1.265 -1.906 0.000
C4 0.662 -1.003 0.000
H5 -1.493 -1.679 0.000
C6 -0.747 -0.887 0.000
N7 -1.143 0.385 0.000
H8 -0.040 2.093 0.000
N9 0.000 1.082 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08682.76982.26014.33563.28393.27212.54592.1399
C21.08682.21591.38253.27362.20712.25582.12721.3567
H32.76982.21591.08622.76772.25553.32414.20663.2454
C42.26011.38251.08622.25841.41332.27683.17442.1879
H54.33563.27362.76772.25841.08842.09364.04163.1390
C63.28392.20712.25551.41331.08841.33213.06192.1058
N73.27212.25583.32412.27682.09361.33212.03241.3387
H82.54592.12724.20663.17444.04163.06192.03241.0111
N92.13991.35673.24542.18793.13902.10581.33871.0111

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 132.117 H1 C2 N9 121.873
C2 C4 H3 127.270 C2 C4 C6 104.257
C2 N9 N7 113.626 C2 N9 H8 127.281
H3 C4 C6 128.473 C4 C2 N9 106.010
C4 C6 H5 128.569 C4 C6 N7 112.025
H5 C6 N7 119.405 C6 N7 N9 104.083
N7 N9 H8 119.093
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.028      
2 C 0.125      
3 H 0.002      
4 C -0.167      
5 H 0.018      
6 C 0.111      
7 N -0.204      
8 H 0.115      
9 N -0.028      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.974 1.018 0.000 2.221
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.239 2.392 0.000
y 2.392 -21.906 0.000
z 0.000 0.000 -31.360
Traceless
 xyz
x -2.606 2.392 0.000
y 2.392 8.393 0.000
z 0.000 0.000 -5.788
Polar
3z2-r2-11.575
x2-y2-7.333
xy2.392
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> 79.907
(<r2>)1/2 8.939