title: Reduction of the host cationic framework charge by isoelectronic substitution: synthesis and structure of Hg7Ag2P8X6 (X = Br, I) and Hg6Ag4P8Br6.
abstract: The first compounds, Hg(7)Ag(2)P(8)X(6) (X = Br, I) and Hg(6)Ag(4)P(8)Br(6), featuring the partial isoelectronic substitution of Hg(2+) for Ag(1+) in mercury-pnicogen frameworks have been obtained and structurally characterized. The new compounds are the supramolecular assemblies built of the covalently bonded metal-pnicogen frameworks trapping guests of different complexity. The frameworks feature the perfect ordering of Hg(2+) and Ag(1+) cations and contain P(2)(4)(-) and P(6)(6)(-) phosphorus clusters. The substitution of Hg(2+) with Ag(1+) leads to the reduction in charge of the host cluster-containing cationic matrix and concomitant replacement of the monatomic X(-) guest by a lesser amount of the AgBr(3)(2)(-) anions.
authors.affiliation: Inorganic Synthesis Laboratory, Department of Chemistry, Moscow State University, 119992 Moscow, Russia.
authors.forename: Olga S
authors.initials: OS
authors.lastname: Oleneva
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Olenev
authors.forename: Tatiana A
authors.initials: TA
authors.lastname: Shestimerova
authors.forename: Alexey I
authors.initials: AI
authors.lastname: Baranov
authors.forename: Evgeny V
authors.initials: EV
authors.lastname: Dikarev
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Shevelkov