%0 Journal Article
%T Cyanide-bridged bimetallic multidimensional structures derived from organotin(IV) and dicyanoaurate building blocks: ion exchange, luminescence, and gas sorption properties
%A Andrea De¨¢k
%A T¨¹nde Tunyogi
%A Csaba Jobb¨¢gy
%A Zolt¨¢n K¨¢roly
%A P¨¦ter Baranyai
%A G¨¢bor P¨¢link¨¢s
%J Gold Bulletin
%@ 2190-7579
%D 2012
%I Springer
%R 10.1007/s13404-012-0041-1
%X The recent success of using methyltin(IV) cations in constructing multidimensional structures containing the Au¨CCN¨CSn link with interesting physical properties will be surveyed. The methyltin(IV)-dicyanoaurates, Me3Sn[Au(CN)2] (1) and Me2Sn[Au(CN)2]2 (2) containing the Au¨CCN¨CSn link can be easily prepared by aqueous reaction of Me3SnCl or Me2SnCl2 with stoichiometric amounts of an aqueous solution of K[Au(CN)2]. The room temperature solid-state emission spectrum of 1 excited at 254 nm shows two intense emission bands at 442 and 670 nm, and a shoulder at 390 nm. When excited at 320 nm, the crystalline sample shows two intense emission bands at 442 and 720 nm, and a shoulder at 380 nm. After 2 min of grinding, only the blue emission band at 442 nm is observed. In contrast, the emission spectrum of 2 shows only one emission maximum at 422 nm. The porosity of 1 and 2 was probed by gas sorption measurements performed at 77 K. 1 exhibited no detectable microporosity as revealed by the inspection of the N2, H2, as well as, O2 isotherms. The gas adsorption studies reveal that only a small amount of N2 and H2 (3.82 and 4.66 cm3 g 1, respectively) is adsorbed by the framework of 2 at 77 K. However, a CO uptake of 11.20 cm3 g 1 can be reached at 1 atm. The framework of 2 can take up significant amounts of O2 (23.27 cm3 g 1). In addition to intriguing photoluminescence and gas sorption behavior, these complexes also exhibit ion exchange properties in the presence of bivalent transition metal cations, such as cobalt(II), nickel(II), copper(II), and zinc(II).
%K Dicyanoaurate
%K Organotin(IV)-dicyanoaurates
%K Ion exchange
%K Photoluminescence
%K Gas sorption
%U http://link.springer.com/article/10.1007/s13404-012-0041-1