{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T17:48:08Z","timestamp":1760896088945,"version":"build-2065373602"},"reference-count":47,"publisher":"Wiley","issue":"27","license":[{"start":{"date-parts":[[2007,8,2]],"date-time":"2007-08-02T00:00:00Z","timestamp":1186012800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2007,9,17]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Certain cadmium\u2010metallated phthalocyanines give rise to EPR active triple\u2010decker sandwich complexes containing two Cd ions and three phthalocyanine (Pc) ligands. These have been shown to form when the ligands bear either eight non\u2010 peripheral alkyl or alkenyl substituents or eight peripheral 2\u2010ethylhexyl groups. They can be derived either from three equivalents of a cadmium phthalocyanine precursor or from a 2:1 mixture of a cadmium phthalocyanine (CdPc) and a metal\u2010free phthalocyanine (H<jats:sub>2<\/jats:sub>Pc). The mode of their formation has been investigated by a series of \u201ccross\u201d experiments. The results indicate that the triple\u2010decker structures are formed by a self\u2010assembly process. This is deduced from results that show that they can disassemble and reassemble with incorporation of differently substituted ligands derived from either an H<jats:sub>2<\/jats:sub>Pc or CdPc. The reassembled structures in these cross experiments can contain more than one ligand that originated from either the added CdPc or, and more surprisingly, the H<jats:sub>2<\/jats:sub>Pc compound. Mass spectrometry has also established that higher order oligomers can be formed when steric requirements between the alkyl substituents on adjacent rings in the stack are reduced. Thus an isotopic cluster for a Cd<jats:sub>5<\/jats:sub>Pc<jats:sub>6<\/jats:sub> complex has been observed when the eight peripheral substituents are hexyl chains and tetrameric complexes are formed when two different ligands are incorporated within a stack, with one carrying substituents at the peripheral sites and the other bearing substituents at the non\u2010peripheral sites.<\/jats:p>","DOI":"10.1002\/chem.200700745","type":"journal-article","created":{"date-parts":[[2007,8,2]],"date-time":"2007-08-02T09:46:36Z","timestamp":1186047996000},"page":"7608-7618","source":"Crossref","is-referenced-by-count":20,"title":["Oligomeric Cadmium\u2013Phthalocyanine Complexes: Novel Supramolecular Free Radical Structures"],"prefix":"10.1002","volume":"13","author":[{"given":"Isabelle","family":"Chambrier","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gaye\u2005F.","family":"White","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael\u2005J.","family":"Cook","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2007,9,5]]},"reference":[{"key":"e_1_2_6_1_2","unstructured":"\u00a0"},{"volume-title":"Phthalocyanine Materials: Synthesis, Structure and Function","year":"1998","author":"McKeown N. 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