THE ORGANOTIN(IV) COORDINATION POLYMER ((ME3SN)4FE(CN)6.2H2O.C4H8O2)INFINITY - A 3-DIMENSIONAL HOST GUEST NETWORK INVOLVING CASCADE-TYPE GUESTS

Macro- or polycyclic Lewis base receptors1require an appropriate disposition of Lewis acidic centers over the respective organic rings. Frequently, after the anchoring of at least two metal ions to selected N and/or O atoms of the ring as “primary guests”, the still remaining coordinative unsaturation of the metal ion admits the subsequent fixation of charged or uncharged donors as “secondary guests” (or “guests of guests”).2Alternatively, single intrinsic ring sites may be made Lewis acidic, as has been demonstrated e.g. for built-in SnlVCl2moieties.3We wish to describe here an essentially inorganic polymer that makes similar use of organotin(lV) units as primary acidic centers, as well as of hydrogen bonding, to build up a three-dimensional host-guest system that even appears to receive notable stabilization from the incorporation of “guest of guest”2(or “cascade-type guest”) units into its primary chains and cycles, respectively. © 1990, American Chemical Society. All rights reserved.