STUDIUL SPECTROFOTOMETRIC AL COMPUŞILOR COORDINATIVI AI COBALTULUI(II), NICHELULUI(II) ŞI CUPRULUI(II) CU TIOSEMICARBAZONA ALDEHIDEI 5-(METILENTRIMETILAMONIU)SALICILICE
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CEP USM
Abstract
Tiosemicarbazona aldehidei 5-(metilentrimetilamoniu)salicilice ([H2L]Cl) are structură ionică, este solubilă în apă şi
formează cu ionii de cobalt(II), nichel(II) şi cupru(II) compuşi coloraţi caracterizaţi spestral prin maximum de absorbţie
la 390 nm, 373 nm şi 375 nm, respectiv. Raportul molar de combinare metal:ligand este 1:1 pentru cupru şi nichel şi 1:2
pentru cobalt. Prin studiul spectrofotometric au fost determinate condiţiile optime de formare a complecşilor, absorbtivitatea
molară şi stabilitatea speciei dominante. În baza studiului realizat a fost propusă o metodă de determinare a conţinutului
de cupru şi cobalt cu reactivul ionic nou.
The 5-(methylenetrimethylamonium)salicylaldehyde thiosemicarbazone ([H2L]Cl) has an ionic structure, water soluble, forming colored compounds with cobalt(II), nick el(II) and copper(II), spectral characterized by maximum absorption of 390 nm, 373 nm and 375 nm. Molar ratio of metal:ligand is 1:1 for copper and nickel, and 1:2 for cobalt. The optimal conditions, molar absorptivity and stability of the dominant species were determined by spectrophotometric study. Based on this study has been proposed a method of determination copper and cobalt with new ionic reagent.
The 5-(methylenetrimethylamonium)salicylaldehyde thiosemicarbazone ([H2L]Cl) has an ionic structure, water soluble, forming colored compounds with cobalt(II), nick el(II) and copper(II), spectral characterized by maximum absorption of 390 nm, 373 nm and 375 nm. Molar ratio of metal:ligand is 1:1 for copper and nickel, and 1:2 for cobalt. The optimal conditions, molar absorptivity and stability of the dominant species were determined by spectrophotometric study. Based on this study has been proposed a method of determination copper and cobalt with new ionic reagent.
Description
Keywords
compus coordinativ, cupru, cobalt, proprietăţi optice, tiosemicarbazonă, coordinative compounds
Citation
SÎRBU, Angela. Studiul spectrofotometric al compuşilor coordinativi ai cobaltului(II), nichelului(II) şi cuprului(II) cu tiosemicarbazona aldehidei 5-(metilentrimetilamoniu)salicilice. In: Studia Universitatis Moldaviae. Seria Ştiinţe reale şi ale naturii. Biologie. Chimie Revistă. ştiinţifice. 2016, nr. 1(91), pp.149-155