Organizing co mmittee

Eshimbetov
3
, Y.E. Nazarov
1
 
 
1) Termez State University; 2) Institute of Bioorganic Chemistry, Academy of Sciences of 
Uzbekistan ; 3) Bioorganic Chemistry, Academy of Sciences of Uzbekistan 
 
As we know, metallocomplexes and their derivatives containing the naphthalene ring 
are currently widely used in agriculture as herbicides and plant growth stimulants. This 
is an important factor in the fight against perennial weeds with a well-developed root 
system. Low-concentration solutions of systemic herbicides are sprayed on the surface 
of plant leaves, and also introduced into the soil.
0.01 mol (3.32 g) of C
10
H
6
Na
2
O
6
S
2
(from naphthalene-1,5-di-sulfoacid) and 0.01 mol 
(1.82 g) of Cu(CH
3
COO)
2
copper (II) acetate salt were taken on an analytical balance. A 
solution was prepared by dissolving the obtained substances using distilled water. Among the 
resulting solutions, 5 ml of sodium salt solution of naphthalene-1,5-di-sulfoacid was taken 
and poured into a flat-bottomed flask. Then, 5 ml of copper (II) acetate salt solution was 
poured over the solution in the flask along the wall of the container, while stirring well with a 
magnetic stirrer, 1 ml of NH
2
-CH
2
-CH
2
-NH
2
(ethylenediamine) solution was added drop by 
drop and heated at 50-60°C for 20 -heated for 25 minutes. The resulting solution was poured 
into glass bottles, left at room temperature to evaporate, and the process was monitored. As a 
result, after 14 days, light blue crystals were formed at the bottom of the container. The 
reaction equation was suggested by X-ray structural analysis (RSA) as follows. 
Table 1.
 
Analysis of IR spectra of sodium salt of naphthalene-1,5-disulfoacid 
(C
10
N
6
Na
2
O
6
S
2
) and synthesized copper (II) (1,2-diaminoethane) naphthalene-1,5-
disulfonato hydroxo cuprate (C
14
H
22
Cu
1
N
4
O
6
S
2
)n complexes. 
Vibration description
N
-H
ν(
Ar
) 
=C
-H
CH
2
=
CH
-C
=N
- 
ν(
Ar
(C
6
H
6
) 
SO
2
Nap
h
t 
ha
len
e 
rin
g
Me
-O
C
10
H
6
Nа
2
O
6
S
2
- 
3348,42 
2924,09 1838,16 
- 
1500,62 1234,44 7 786,96 
661,58 
(C
14
H
22
Cu
1
N
4
O
6
S
2
)
n
3427,51 3381,21 1463,97 
- 
1585,49 
1502,55 
1242,06 
792,74 
661,58 
As a result of the conducted research, a new metallocomplex containing 
[C
14
H
22
Cu
1
N
4
O
6
S
2
]
n
was synthesized as a result of the reaction of naphthalene sulfonic 
acid with copper (II) acetate and ethylenediamine. The composition, molecular and 
crystal structures of the synthesized metallocomplex were proved using X-ray structural 
analysis (RSA), vibrational frequencies of the ligand and the complex compound 
molecule were analyzed using IR-spectroscopy.