Title
Stereospecific interaction of optically active sulfur-bridged dinuclear Co(III)–Pt(II) complex with pseudo-enantiomeric Co(III)–M(II) (M: Pd or Pt) complex involving unequivalent π electronic system
Author
Yasunori Yamada, Daishin Koori, Yuuki Oshikawa, Masayuki Koikawa
Year
2016
Journal
Inorganica Chimica Acta
Abstract
Assemblies between the pseudo-enantiomers with different π electronic systems, [Pt(bpy){Co(d-pen)2}]+ (bpy = 2,2′-bipyridine, pen = penicillaminate) and [M(phen){Co(l-pen)2}]+ (M = Pt or Pd, phen = 1,10-phenanthroline), or [Pt(bpy){Co(l-pen)2}]+ and [M(phen){Co(d-pen)2}]+, have been examined from stereo- and spectrochemical aspects. As a result, a mixture of equimolar amounts of optically active sulfur-bridged dinuclear complex, [Pt(bpy){Co(d-pen)2}]Cl, and its pseudo-enantiomer, [M(phen){Co(l-pen)2}]Cl, in H2O crystallizes as [Pt(bpy){Co(d-pen)2}][M(phen){Co(l-pen)2}]Cl2·14H2O, in which two complex cations with imperfect enantiomorphisms form a 1:1 π–π stacked unit. In the crystal, such a 1:1 π–π stacked unit develops into a linear-chain through further π–π stacking contacts with adjacent 1:1 π–π stacked units.
Instrument
J-720, 820
Keywords
Circular dichroism, Stereochemistry, Inorganic chemistry, Coordination chemistry,