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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-226.106063
Energy at 298.15K-226.112069
Nuclear repulsion energy163.811613
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 B1B95/6-31G*
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' 3707 3519 72.30      
2 A' 3324 3155 0.73      
3 A' 3306 3138 2.92      
4 A' 3291 3124 5.12      
5 A' 1609 1527 7.05      
6 A' 1529 1452 6.40      
7 A' 1471 1397 14.59      
8 A' 1422 1349 2.81      
9 A' 1310 1243 4.73      
10 A' 1218 1156 3.07      
11 A' 1175 1115 16.52      
12 A' 1078 1023 29.09      
13 A' 1073 1019 15.51      
14 A' 941 893 4.96      
15 A' 918 872 9.05      
16 A" 901 855 4.42      
17 A" 847 804 9.91      
18 A" 762 723 79.76      
19 A" 702 667 24.50      
20 A" 642 610 0.00      
21 A" 540 512 59.64      

Unscaled Zero Point Vibrational Energy (zpe) 15882.1 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 15076.9 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 B1B95/6-31G*
ABC
0.32560 0.31707 0.16064

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.098 0.730 0.000
C2 1.107 0.304 0.000
H3 1.259 -1.893 0.000
C4 0.660 -0.997 0.000
H5 -1.479 -1.673 0.000
C6 -0.741 -0.883 0.000
N7 -1.140 0.381 0.000
H8 -0.048 2.083 0.000
N9 0.000 1.078 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07852.75302.24614.30803.26513.25682.53682.1263
C21.07852.20211.37503.25422.19652.24832.12061.3502
H32.75302.20211.07802.74672.24103.30584.18503.2265
C42.24611.37501.07802.24321.40632.26713.15972.1769
H54.30803.25422.74672.24321.08002.08114.01853.1227
C63.26512.19652.24101.40631.08001.32563.04602.0966
N73.25682.24833.30582.26712.08111.32562.02221.3366
H82.53682.12064.18503.15974.01853.04602.02221.0060
N92.12631.35023.22652.17693.12272.09661.33661.0060

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 132.172 H1 C2 N9 121.798
C2 C4 H3 127.305 C2 C4 C6 104.320
C2 N9 N7 113.600 C2 N9 H8 127.714
H3 C4 C6 128.375 C4 C2 N9 106.030
C4 C6 H5 128.427 C4 C6 N7 112.136
H5 C6 N7 119.436 C6 N7 N9 103.914
N7 N9 H8 118.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.182      
2 C 0.069      
3 H 0.164      
4 C -0.272      
5 H 0.166      
6 C 0.024      
7 N -0.273      
8 H 0.364      
9 N -0.422      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.105 0.928 0.000 2.300
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.014 2.419 0.000
y 2.419 -21.557 0.000
z 0.000 0.000 -31.200
Traceless
 xyz
x -2.636 2.419 0.000
y 2.419 8.550 0.000
z 0.000 0.000 -5.915
Polar
3z2-r2-11.829
x2-y2-7.457
xy2.419
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.762 0.271 0.000
y 0.271 6.985 0.000
z 0.000 0.000 2.538


<r2> (average value of r2) Å2
<r2> 79.155
(<r2>)1/2 8.897