EQUILIBRIUM STUDIES OF 2,2'-(5-BROMO-6-METHYLPYRIMIDINE-2,4-DIYL)BIS(AZANEDIYL)DIPROPANOIC ACID WITH SOME TRANSITION-METAL IONS IN AQUEOUS SOLUTION
The stability constants of the 1:1 complexes formed between M2+ (M2+: Mn2+, Ni2+, Cu2+, or Cd2+) and BMADA2- (BMADA: 2,2'-(5-bromo-6-methylpyrimidine-2,4 diyl)bis(azanediyl)dipropanoic acid) were determined by potentiometric pH titration in aqueous solution (I = 0.1 mol L-1, NaNO3, 25 °C). The...
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description | The stability constants of the 1:1 complexes formed between M2+ (M2+: Mn2+, Ni2+, Cu2+, or Cd2+) and BMADA2- (BMADA: 2,2'-(5-bromo-6-methylpyrimidine-2,4 diyl)bis(azanediyl)dipropanoic acid) were determined by potentiometric pH titration in aqueous solution (I = 0.1 mol L-1, NaNO3, 25 °C). The stability of the binary M - BMADA complexes is determined by the basicity of the carboxyl or amino groups. All the stability constants reported in this work exhibit the usual trend, and the order obtained was Mn2+< Ni2+ < Cu2+ > Cd2+. The observed stability order for BMADA approximately follows the Irving - Williams sequence. In the M - BMADA complexes, the M ion is able to form a macrochelate via the pyrimidine group of BMADA. |
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The observed stability order for BMADA approximately follows the Irving - Williams sequence. 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A.</creatorcontrib><creatorcontrib>Bagherzadeh, Ghodsieh</creatorcontrib><creatorcontrib>Khaleghian, Marzieh</creatorcontrib><creatorcontrib>Mirbagheri, Maryam</creatorcontrib><creatorcontrib>Safaie, Hosein</creatorcontrib><collection>CrossRef</collection><collection>SciELO</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Química Nova</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sajadi, Seyed A. A.</au><au>Bagherzadeh, Ghodsieh</au><au>Khaleghian, Marzieh</au><au>Mirbagheri, Maryam</au><au>Safaie, Hosein</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>EQUILIBRIUM STUDIES OF 2,2'-(5-BROMO-6-METHYLPYRIMIDINE-2,4-DIYL)BIS(AZANEDIYL)DIPROPANOIC ACID WITH SOME TRANSITION-METAL IONS IN AQUEOUS SOLUTION</atitle><jtitle>Química Nova</jtitle><addtitle>Quím. Nova</addtitle><date>2014-01-01</date><risdate>2014</risdate><volume>37</volume><issue>5</issue><spage>896</spage><epage>899</epage><pages>896-899</pages><issn>0100-4042</issn><issn>1678-7064</issn><abstract>The stability constants of the 1:1 complexes formed between M2+ (M2+: Mn2+, Ni2+, Cu2+, or Cd2+) and BMADA2- (BMADA: 2,2'-(5-bromo-6-methylpyrimidine-2,4 diyl)bis(azanediyl)dipropanoic acid) were determined by potentiometric pH titration in aqueous solution (I = 0.1 mol L-1, NaNO3, 25 °C). The stability of the binary M - BMADA complexes is determined by the basicity of the carboxyl or amino groups. All the stability constants reported in this work exhibit the usual trend, and the order obtained was Mn2+< Ni2+ < Cu2+ > Cd2+. The observed stability order for BMADA approximately follows the Irving - Williams sequence. In the M - BMADA complexes, the M ion is able to form a macrochelate via the pyrimidine group of BMADA.</abstract><pub>Sociedade Brasileira de Química</pub><doi>10.5935/0100-4042.20140144</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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subjects | acidity and stability constants CHEMISTRY, MULTIDISCIPLINARY divalent metal ions potentiometric titration |
title | EQUILIBRIUM STUDIES OF 2,2'-(5-BROMO-6-METHYLPYRIMIDINE-2,4-DIYL)BIS(AZANEDIYL)DIPROPANOIC ACID WITH SOME TRANSITION-METAL IONS IN AQUEOUS SOLUTION |
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