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

using model chemistry: B3PW91/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-226.149238
Energy at 298.15K-226.155260
Nuclear repulsion energy163.005055
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/aug-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' 3677 3547 81.68      
2 A' 3289 3173 0.32      
3 A' 3270 3154 1.26      
4 A' 3255 3140 2.58      
5 A' 1570 1515 5.96      
6 A' 1494 1441 5.37      
7 A' 1441 1390 14.42      
8 A' 1391 1341 2.00      
9 A' 1281 1236 4.31      
10 A' 1196 1154 1.92      
11 A' 1149 1108 17.66      
12 A' 1055 1018 36.09      
13 A' 1051 1014 10.04      
14 A' 935 902 3.87      
15 A' 915 883 8.83      
16 A" 886 855 8.10      
17 A" 838 808 6.19      
18 A" 749 723 102.52      
19 A" 693 669 17.07      
20 A" 637 614 0.08      
21 A" 558 539 51.18      

Unscaled Zero Point Vibrational Energy (zpe) 15664.4 cm-1
Scaled (by 0.9646) Zero Point Vibrational Energy (zpe) 15109.9 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/aug-cc-pVDZ
ABC
0.32152 0.31476 0.15905

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.109 0.733 0.000
C2 1.111 0.307 0.000
H3 1.267 -1.902 0.000
C4 0.662 -1.001 0.000
H5 -1.490 -1.683 0.000
C6 -0.747 -0.890 0.000
N7 -1.143 0.382 0.000
H8 -0.046 2.092 0.000
N9 0.000 1.085 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08502.76592.25814.33433.28473.27082.54762.1381
C21.08502.21431.38293.27462.21012.25532.12731.3562
H32.76592.21431.08472.76552.25353.32044.20423.2441
C42.25811.38291.08472.25771.41362.27463.17352.1885
H54.33433.27462.76552.25771.08642.09394.04173.1428
C63.28472.21012.25351.41361.08641.33283.06382.1113
N73.27082.25533.32042.27462.09391.33282.03171.3415
H82.54762.12734.20423.17354.04173.06382.03171.0087
N92.13811.35623.24412.18853.14282.11131.34151.0087

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 132.037 H1 C2 N9 121.898
C2 C4 H3 127.209 C2 C4 C6 104.423
C2 N9 N7 113.442 C2 N9 H8 127.583
H3 C4 C6 128.368 C4 C2 N9 106.064
C4 C6 H5 128.662 C4 C6 N7 111.800
H5 C6 N7 119.538 C6 N7 N9 104.271
N7 N9 H8 118.976
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H -0.402      
2 C 0.488      
3 H -0.411      
4 C 0.874      
5 H -0.337      
6 C 0.323      
7 N -0.425      
8 H -0.067      
9 N -0.044      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.135 0.808 0.000 2.283
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.988 2.618 0.000
y 2.618 -22.297 0.000
z 0.000 0.000 -32.122
Traceless
 xyz
x -2.778 2.618 0.000
y 2.618 8.758 0.000
z 0.000 0.000 -5.980
Polar
3z2-r2-11.960
x2-y2-7.690
xy2.618
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.315 0.174 0.000
y 0.174 8.314 0.000
z 0.000 0.000 5.008


<r2> (average value of r2) Å2
<r2> 80.334
(<r2>)1/2 8.963