Versatile binding modes of acyclic N2X2 (X = O, S and P) ligands towards [GeCl]+ and AuCl units

Publication date: 1 April 2020Source: Inorganica Chimica Acta, Volume 503Author(s): Devesh Maurya, Joy Karmakar, Padmini Sahoo, Ravindra K. Raut, Moumita MajumdarAbstractThe compliance of three acyclic flexible ligands of the type N2X2 with CH2CH2 linker in the backbone: diiminodi(furan) L1, diiminodi(thiophene) L2 and diiminodiphosphine L3 have been employed for the coordination of chlorogermyliumylidene and gold(I) chloride units. The chlorogermyliumylidenes have been stabilized by the two imino nitrogen coordinating sites present in L1 and L2 yielding compounds 1 and 2 respectively. Based on metal:ligand stoichiometry used, the phosphino groups present in L3 can coordinate to either one AuCl unit giving compound 3 or to two AuCl units forming compound 4. All the compounds have been characterized by NMR techniques and single crystal X-ray crystallography.Graphical abstractTetradentate ligand of the type N2X2 show versatile coordinating modes with Ge(II) monocations and Au(I) chloride leaving free coordinating sites in each case for further reactivity and metalation. Such tailored molecules have implications in tandem catalysis.

Source: Inorganica Chimica Acta - January 17, 2020 Category: Chemistry Source Type: research