Heterodinuclear Cu(II)Zn(II) complexes: 19F NMR as a versatile tool to control the synthesis
作者:Stéphane Torelli、Catherine Belle、Isabelle Gautier-Luneau、Sylvain Hamman、Jean-Louis Pierre
DOI:10.1016/s0020-1693(02)00770-3
日期:2002.5
The dinucleating ligands 2,6-bis[(bis(2-pyridylmethyl)amino)methyl]-4-methylphenol (H-BPMP) and 2,6-bis[(bis(2-pyridylmethyl)amino)methyl]-4-fluorophenol (H-BPFP) were used to synthesize heterodinuclear (mu-phenoxo)(mu-hydroxo) Cu(II)-Zn(II) complexes. The labeled ligand with a fluorine atom allows the use of F-19 NMR spectroscopy. which turned to be a rapid and powerful tool to tune the synthesis of the heterodinuclear paramagnetic complex [Cu-ZnBPFP(muOH)](ClO4)(2) and avoid mixing of complexes with statistical distribution. When applied to the non-fluorinated ligand. this experimental procedure leads to prepare and isolate easily the complex [Cu-ZnBPMP(muOH)](ClO4)(2). The X-ray structure is described. (C) 2002 Elsevier Science B.V. All rights reserved.