title: Water is a key factor to alter the structure and electrochemical properties of carboxylate-bridged dimanganese(II) complexes.
abstract: The synthesis and physical properties of dimanganese(II) compounds with varying numbers of water ligands housed in the four bulky carboxylate motifs, including the first complex with a parallelogram core {Mn2(μ-OH2)2(μ-O2CR)}(3+) unit, are described. The isolation of these complexes revealed how water could alter the structural and electrochemical properties of similar carboxylate-bridged dimanganese(II) cores that may occur in a variety of active sites of Mn-containing metalloenzymes. These studies support the notion that water molecules in coordination spheres of active sites of metalloproteins are not a simple spectator medium but the modulation factor of structures and functions.
authors.affiliation: Department of Bio & Nano Chemistry, College of Natural Sciences, Kookmin University, 861-1 Jeongneung-dong, Seongbuk-gu, Seoul 136-702, Republic of Korea. yoona@kookmin.ac.kr.
authors.forename: Dharmalingam
authors.initials: D
authors.lastname: Sivanesan
authors.forename: Sethuraman
authors.initials: S
authors.lastname: Kannan
authors.forename: Thangaian Daniel
authors.initials: TD
authors.lastname: Thangadurai
authors.forename: Kwang-Deog
authors.initials: KD
authors.lastname: Jung
authors.forename: Sungho
authors.initials: S
authors.lastname: Yoon
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry*; D004563:Electrochemistry; D017895:Manganese Compounds / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D014867:Water / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D017895:Manganese Compounds; D014867:Water