title: Synthesis and photoluminescence properties of an unprecedented phosphinine-Cu₄Br₄ cluster.
abstract: A hitherto unprecedented polynuclear phosphinine-Cu(I) complex has been prepared and crystallographically characterized. The molecular structure in the crystal verifies the presence of the heterocubane-type tetrameric cluster [LCuBr]4 (L = 2,4-diphenyl-5-methyl-6-(2,3-dimethylphenyl)phosphinine), which unexpectedly shows in the solid state temperature-independent orange phosphorescence solely from an (3)XMLCT state, in clear contrast to the well-established dual-emissive-state model for luminescent Cu4X4L4 clusters.
authors.affiliation: Institut für Chemie und Biochemie, Freie Universität Berlin , Fabeckstraße 34/36, 12167 Berlin, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Roesch
authors.forename: Jörn
authors.initials: J
authors.lastname: Nitsch
authors.forename: Martin
authors.initials: M
authors.lastname: Lutz
authors.forename: Jelena
authors.initials: J
authors.lastname: Wiecko
authors.forename: Andreas
authors.initials: A
authors.lastname: Steffen
authors.forename: Christian
authors.initials: C
authors.lastname: Müller