Double-decker yttrium(III) complexes with phthalocyaninato and porphyrinato ligands

A series of new yttrium(III) double-decker complexes with the same and diff erent phthalocyaninato and porphyrinato ligands has been prepared. The homo leptic complexes Y(P)(2) (P = Pc*(C7H15)(8), Pc*(OC5H11)(8); Pc* = 2,3,9,10 ,16,17,23,24-octasubstituted phthalocyaninate) have been synthesized by tre ating yttrium(III) acetylacetonate (Y(acac)(3). H2O) with the phthalonitril es C6H2R2(CN)(2) (R = C7H15, OC5H11) in the presence of 1,8-diazabicyclo[5. 4.0]undec-7-ene (DBU). The heteroleptic analogues Y(P)(Pc) (P = Pc*(C7H15)( 8), Pc*(OC5H11)(8); Pc = unsubstituted phthalocyaninate) and Y(P)(Por) (P = Pc, Pc*(C7H15)(8); Por = meso-tetraphenylporphyrinate (TPP), meso-tetra(4- pyridyl)porphyrinate (TPyP)) have been prepared by the base-catalysed tetra merization of the corresponding phthalonitriles using Y(P)(acac) (P = Pc, T PP, TPyP) as templates. The syntheses along with the spectroscopic and elec trochemical properties of these novel double-deckers are described. Copyrig ht (C) 1999 John Wiley & Sons, Ltd.