Isolation and spectroscopic characterization of protonated mixed [tetrakis(4-pyridyl) porphyrinato](phthalocyaninato) rare earth (III) double-decker compounds

The treatment of tetrakis(4-pyridyl) porphyrin H(2)TPyP with a hydrated rare earth (III) acetylacetonate RE(acac)(3) . nH(2)O (RE=Y, Eu, Gd) in 1,2,4-trichlorobenzene (TCB) produced a monomeric porphyrinato rare earth compound RE(TPyP)acac, which further reacted with dicyanobenzene in amyl alcohol in the presence of 1,8-diazabicyclo [5.4.0] undec-7-ene (DBU), giving HRE(TPyP)(Pc) in a good yield. Upon exposure to air, part of the protonated mixed double-deckers in CHCl(3) solutions converted slowly to the corresponding neutral complexes RE(TPyP)(Pc). These protonated complexes were characterized by means of UV-Vis, IR, NMR, mass spectroscopies. The quaternarization of these protonated mixed double-deckers with methyl iodide produced the salts of tetramethylated cations [HRE(TMPyP)(Pc)](4+).http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000169236400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Chemistry, MultidisciplinarySCI(E)12ARTICLE2134-1421