Университети кимё – технология факультети

Figure 1. X-ray diffraction pattern of synthesized samples using different 
magnesium salts a) MgCl
2
·6H
2
O b) Mg(NO
3
)
2
·6H
2
O 
Data X-ray phase analyzes have shown that the maximum full of magnesium 
aluminate synthesis is positively affected by magnesium nitrate salts (Fig. 1a) at a 
temperature of 1000 
℃
than magnesium chloride (Fig. 1b). 
Thus, in the course of experimental studies, optimal synthesis temperatures 
and the possibility of using aluminum-containing waste at different salts of magic 
in obtaining magnesium mono aluminum were determined. 

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36
References 
1.
Zhang X. Hydrothermal synthesis and catalytic performance of high-
surface-area mesoporous nanocrystallite MgAl2O4 as catalyst support. Mater. 
Chem. Phys. 2009. V. 116. P. 415 – 420. 
2.
Liu W., Yang J., Xu H. et al. Effects of chelation reactions between 
metal alkoxide and acetylacetone on the preparation of MgAl2O4 powders by sol–
gel process // Adv. Powder Technol. 2013. V. 24. P. 436 – 440. 
3.
Sanjabi S. Synthesis and characterization of nanocrystalline MgAl2O4 
spinel via modified sol–gel method. J. Alloys Compd. 2015. V. 645. P. 535 – 540.
SYNTHESIS AND ANALYSIS OF COORDINATION COMBINATION OF 
COPPER (II) CHLORIDE WITH MONOETHANOLAMINE AND P-
NITROBENZOIC ACID 
a
Khudoyberganov O.I., 
b
Iskandarov D.F 
a
Khorezm Mamun Academy 
b
Urgench State University 
Providing the population with a variety of food products at all stages of 
human development has been one of the actual issues. One of the key factors in 
this is the rational protection of plants from harmful organisms (pests, diseases and 
weeds). In the development of grain, potatoes, fruits, vegetables and other crops, as 
well as livestock in the country, it is important to protect plants from pests. 
Because the conditions of Uzbekistan (hot climate, its geographical location and 
soil conditions) are very favorable for the growth of pests. They find abundant 
food and a comfortable place in the fields, which in turn leads to more damage to 
crops. One of the main pests in cotton fields, spiders give 18-20 generations in 
Uzbekistan, caradrina 4-6, caterpillars 3-4, plant lice 16-17 and Colorado beetle 3-
4 in potato growing areas. Therefore, in our conditions, the development and 
effective use of specific methods of pest control is one of the important measures 
to increase productivity. 
In this regard, in the fight against plant pests include simple monofilaments 
of benzoic acid – all types of isomers of nitro-, amino- and hydroxybenzoic acids 
(primary ligand), and as auxiliary ligands to obtain mono-, di- and tri-
ethanolamines with similar bioactivity and convert them into Cu, Co, It is 
advisable to use complex compounds formed with biometals such as Mn, Mo and 
Ni. Because these newly synthesized complexes exhibit antimicrobial and 
stimulatory properties. 

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37
This work is also devoted to the synthesis and study of complex compounds 
of antimicrobial and stimulant substances: copper (II) chloride with 
monoethanolamine and p-nitrobenzoic acid. 
The purpose of the work: to develop a method for the synthesis of a complex 
combination of Cu (II) chloride with para-nitrobenzoic acid, as well as to study the 
composition and structure of the synthesized complex by modern physicochemical 
methods.Complex synthesis was carried out according to the following method: 
0.002 mol of p-nitrobenzoic acid was dissolved in 20 ml of hot methanol and 0.001 
mol of copper (II) chloride solution in 30 ml of water was added at a rate of 5 ml 
every 20 minutes. To this mixture was poured an alcoholic solution of 
monoethanolamine in a ratio of 1:30. The solution was stirred at 55-60
о
С in a 
magnetic stirrer of the MS-H280-Pro brand for 2 hours. The reaction mixture was 
then left to crystallize at room temperature. After 5–6 days, the blue complex 
precipitate formed was separated, washed in methanol, and dried in the open air.
The amount of metals in the synthesized complex compounds was 
determined on the Novaa 300 apparatus of Analytic Jena (Germany), and the 
analysis of carbon, hydrogen and nitrogen elements was determined on the EA 
1108 apparatus of Carlo-Erba (Italy) (Table 1). KBr tablets with a diameter of 7 
mm samples were prepared in the area of the IQ spectra 400-4000 cm
1
of the 
compound on IRAffinity-1S spectrophotometer of Shimadzu (Japan). X-ray 
structural analysis was obtained on an Xcalibur ROxford Diffraction automatic 
diffractometer at a temperature of 293 K (Cu Karadiation, k = 1.54184 Å, xscan 
mode, graphite monochromator).