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Coordination Chemistry of 2,5,8‐Trithia[9],(2,9)‐1,10‐phenanthrolinophane (L) toward Rhodium(III) at the Polarised Water/1,2‐Dichloroethane Interface − A Possible New Approach to the Problem of Separating Rh III from Chloride Media
Author(s) -
Blake Alexander J.,
Caçote M. Helena M.,
Devillanova Francesco A.,
Garau Alessandra,
Isaia Francesco,
Lippolis Vito,
Pereira Carlos M.,
Silva Fernando,
Tei Lorenzo
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200207)2002:7<1816::aid-ejic1816>3.0.co;2-y
Subject(s) - chemistry , rhodium , ligand (biochemistry) , coordination complex , 1,2 dichloroethane , octahedron , coordination sphere , metal , chloride , inner sphere electron transfer , octahedral molecular geometry , outer sphere electron transfer , crystallography , dichloroethane , ion , inorganic chemistry , medicinal chemistry , crystal structure , organic chemistry , catalysis , biochemistry , receptor
The coordination chemistry involved in the assisted transfer of Rh III by interfacial coordination with 2,5,8‐trithia[9],(2,9)‐1,10‐phenanthrolinophane (L) has been studied at the water/1,2‐dichloroethane interface by cyclic voltammetry. The dependence of the half‐wave transfer potential on the ligand and metal concentrations suggests the [Rh(L)Cl 2 ] + formulation for the complex cation involved in the assisted transfer. In contrast, from the reaction of L in refluxing MeCN/water solution the [Rh(L)Cl][BF 4 ] 2 ·2MeCN compound has been isolated and structurally characterised. In the [Rh(L)Cl] 2+ complex cation L acts as an N 2 S 3 donor encapsulating the metal centre within a cavity having a square‐based pyramidal geometry. A chloride ligand completes the distorted octahedral coordination sphere around the Rh III ion. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)