Reactions of the organotin selenide chloride clusters [(R Sn ) Se Cl] (A, R =CMe CH C(O)Me) or [(R Sn ) Se ] (B) with [Cu(PPh ) Cl ] yield cluster compounds with different inorganic, mixed-valence core structures: [Cu Sn Sn Se ], [Cu Sn Sn Se Cl ], [Cu Sn Sn Se ], [Cu Sn Sn Se Cl ], and [Cu Sn Se ]. Five of the compounds, namely [(CuPPh ) {(R Sn ) Se }] (1), [(CuPPh ) Sn {(R Sn ) Se } ] (2), [(CuPPh ) (Sn Cl) {(RSn ) Se } ] (3) [(CuPPh ) (Sn Cu ){(R Sn ) Se } ] (4), and [Cu(CuPPh )(Sn Cu ){(R Sn ) Se } ] (5) are structurally closely related. They are based on [(CuPPh ) {(RSn ) Se } ] aggregates comprising [(RSn ) Se ] and [CuPPh ] building units, which are linked by further metal atoms. A sixth compound, [(CuPPh ) (Sn Cl) {(R Sn Cl)Se } ] (6), differs from the others by containing [(RSn Cl)Se ] units instead, which affects the absorption properties. The compounds were analyzed by single-crystal X-ray diffraction, NMR and Sn Mössbauer spectroscopy, DFT calculations as well as optical absorption experiments.
Mayenite [Ca24Al28O64]4+(2O2-) is a nanopourous compound, whose properties are strongly determined by its degree of reduction. It consists of a positively charged, subnanometer sized cage structure [Ca24Al28O64]4+ and two additional...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.