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The conformational flexibility of three covalently linked dimers consisting of two xanthene‐based moieties connected by a diphenyl ether linker was studied using NMR spectroscopy, X‐ray crystallography, and density functional theory (DFT) calculations. The three dimers interconvert as a function of pH: the doubly cationic dimer (Xan+)2 exists in acidic solutions (pH < 0.5), the mono‐alcohol monocation...
New hexa-coordinated Ru(II) complexes of the type [RuCl 2 (DMSO) 2 (diamine)] (diamine=o-phenylenediamine and ethylenediamine) have been prepared by reacting cis-[RuCl 2 (DMSO) 4 ] with Schiff bases (H 2 sal-en, 1; H 2 nap-en, 2; H 2 sal-o-pdn, 3; H 2 nap-o-pdn, 4) in a 1:1 ratio. The ligands, which were expected to act as tetradentate...
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