The Synthesis and Structure of a Heterobimetallic Alumophosphite [κ2‐P, S‐LAl(µ‐S)(µ‐O)P(OEt)2]GaMe2
摘要:
The reaction of the LAl(SH)(mu-O)P(OEt)(2) (L = HC [C(Me)NAr](-), R = 2,6-di-iPr(2)C(6)H(3)) ligand (1) with GaMe3 in toluene led to the isolation of a unique heterobimetallic aluminophosphite [kappa(2)-P, S-LAl(mu-S)(mu-O)P(OEt)(2)]GaMe2 (2). Compound 2 is a potential secondary building unit (SBU) for heterometallic materials and represents the first example of structurally characterized lipophilic phosphite of the p-block metals, in which the metal is coordinated by the phosphorus atom. Moreover, it represents the first structurally characterized example where a gallium atom is coordinated to both, sulfur and phosphorus atoms. Furthermore, it contains a rare carbon-free "true" 5-membered heterocycle Al-O-P-Ga-S.
An Unknown Coordination Mode of the Phosphite Unit and a Carbon-Free Heterocycle in Two Different Heterobimetallic Alumophosphites
摘要:
The unique alumophosphite reagent LAI(SH)(mu-O)P(OEt)(2) was prepared and used for the synthesis of the heterobimetallic alumophosphites [{kappa(2)-S,P-LAI(S)(mu-O)P(OEt)(2)}(2)Zn] and [{kappa(4)-S,O,O-LAI(SLi)(mu-O)P(OEt)(2)}(2)]. The first contains a rare example of two carbon-free five-membered heterocycles (Al-S-Zn-P-O) connected in a spiro fashion through the zinc atom, whereas the second possesses an unknown example of a coordination environment of a phosphite unit M-O-P(mu-OEt)(2)M with an uncoordinated lone electron pair on the phosphorus center.