title: Nitrogen-Phosphorus(III)-Chalcogen Macrocycles for the Synthesis of Polynuclear Silver(I) Sandwich Complexes.
abstract: The synthesis of inorganic N-P(III)-Ch-based macrocycles [-PhP-NMe-PPh-Ch-]2(8Ch; Ch = S, Se) is presented by incorporating two nitrogen, two chalcogen, and four phosphorus atoms. The macrocycles are conveniently obtained via the cyclocondensation reaction of Na2Ch (Ch = S, Se) with the acyclic dichlorodiphosphazane ClPhP-NMe-PClPh (9). Treatment with elemental sulfur (S8) or gray selenium (Segray) results in an oxidative ring contraction to give 1,3,2,4-thiazadiphosphetidine 2,4-disulfide (10S) and 1,3,2,4-selenazadiphosphetidine 2,4-diselenide (10Se), respectively. Macrocycles 8Chare excellent multidentate ligands for transition metal complexation, as demonstrated by the isolation of mono-, di- tri-, and tetranuclear silver sandwich complexes. The polynuclear silver complexes are comprehensively characterized, including detailed NMR and X-ray analysis.
authors.affiliation: Department of Chemistry and Food Chemistry, TU Dresden , 01062 Dresden, Germany.
authors.forename: Sivathmeehan
authors.initials: S
authors.lastname: Yogendra
authors.affiliation: Department of Chemistry and Food Chemistry, TU Dresden , 01062 Dresden, Germany.
authors.forename: Felix
authors.initials: F
authors.lastname: Hennersdorf
authors.affiliation: Department of Chemistry and Food Chemistry, TU Dresden , 01062 Dresden, Germany.
authors.forename: Jan J
authors.identifier: http://orcid.org/0000-0001-7323-7816
authors.initials: JJ
authors.lastname: Weigand