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

using model chemistry: mPW1PW91/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 mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-226.180798
Energy at 298.15K-226.186844
Nuclear repulsion energy163.307425
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/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' 3702 3548 84.93      
2 A' 3308 3170 0.23      
3 A' 3288 3151 1.12      
4 A' 3273 3137 2.54      
5 A' 1584 1518 6.19      
6 A' 1508 1445 5.38      
7 A' 1453 1392 15.56      
8 A' 1404 1346 1.71      
9 A' 1292 1238 4.72      
10 A' 1208 1158 2.42      
11 A' 1157 1109 17.86      
12 A' 1063 1019 38.39      
13 A' 1057 1013 8.22      
14 A' 941 902 3.76      
15 A' 921 882 9.06      
16 A" 895 858 8.04      
17 A" 847 812 5.90      
18 A" 756 725 103.15      
19 A" 698 669 17.49      
20 A" 641 615 0.06      
21 A" 564 540 52.49      

Unscaled Zero Point Vibrational Energy (zpe) 15780.3 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 15122.3 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/aug-cc-pVDZ
ABC
0.32266 0.31597 0.15964

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.105 0.732 0.000
C2 1.109 0.306 0.000
H3 1.265 -1.900 0.000
C4 0.661 -1.000 0.000
H5 -1.489 -1.679 0.000
C6 -0.746 -0.888 0.000
N7 -1.140 0.382 0.000
H8 -0.045 2.088 0.000
N9 0.000 1.083 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08352.76222.25464.32783.27953.26422.54292.1344
C21.08352.21131.38073.26942.20632.25022.12321.3535
H32.76222.21131.08312.76212.25073.31474.19763.2391
C42.25461.38071.08312.25481.41202.27043.16812.1850
H54.32783.26942.76212.25481.08492.09034.03463.1374
C63.27952.20632.25071.41201.08491.32983.05812.1073
N73.26422.25023.31472.27042.09031.32982.02751.3381
H82.54292.12324.19763.16814.03463.05812.02751.0069
N92.13441.35353.23912.18503.13742.10731.33811.0069

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 132.025 H1 C2 N9 121.890
C2 C4 H3 127.248 C2 C4 C6 104.373
C2 N9 N7 113.431 C2 N9 H8 127.573
H3 C4 C6 128.379 C4 C2 N9 106.086
C4 C6 H5 128.658 C4 C6 N7 111.766
H5 C6 N7 119.577 C6 N7 N9 104.345
N7 N9 H8 118.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H -0.377      
2 C 0.497      
3 H -0.387      
4 C 0.838      
5 H -0.313      
6 C 0.324      
7 N -0.434      
8 H -0.054      
9 N -0.095      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.141 0.807 0.000 2.288
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.958 2.630 0.000
y 2.630 -22.277 0.000
z 0.000 0.000 -32.178
Traceless
 xyz
x -2.730 2.630 0.000
y 2.630 8.791 0.000
z 0.000 0.000 -6.061
Polar
3z2-r2-12.122
x2-y2-7.681
xy2.630
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.248 0.174 0.000
y 0.174 8.259 0.000
z 0.000 0.000 5.006


<r2> (average value of r2) Å2
<r2> 80.109
(<r2>)1/2 8.950