Tin-119 Mössbauer spectral studies in organotin(IV) and tin(II) substituted oxinates

Preparation and structural characterization of organotin(IV) complexes with ligands containing a hetero {N} atom and a hydroxy group or hydroxy and carboxyl groups

“…Complexes of R n Sn(IV) (4 À n)+ (R = alkyl or aryl groups, n = 1 À 3) with 8-hydroxyquinoline and related ligands have been investigated by means of X-ray diffraction [3][4][5][6], 119 Sn Mö ssbauer spectroscopy [7][8][9][10], IR, NMR, UV-vis and other techniques [11,12]. Huber and co-workers [13] found that the complex p-chlorophenyl-tris (8- corresponding monoaryltin(IV) and monobenzyltin(IV) complexes, the ligand is coordinated to the metal centre in a bidentate manner, while in triorganotin(IV) quinolinates its coordination mode is monodentate.…”

N-O Ligand Supported Stannylenes: Preparation, Crystal, and Molecular Structures

“…Amongst the library of [Sn(II)(R-L) 2-x (X) x ] systems, perhaps the most frequently studied are those bearing an N-N' chelate as the [R-L] ligands, such as amidinates [22,[27][28][29], guanidinates [8,25,[30][31][32][33], β-diketiminates [5,21,[34][35][36][37][38][39], and amino/imino-pyrrolides [9]. While Sn(II) [Sn(R-L) 2-x (X) x ] systems bearing an N,O chelate ligand such as amino alcohols [7,[40][41][42][43][44][45][46][47][48], amino-phenols [49], organic amides [23,50], salicylaldiminato [50][51][52][53], ketiminate [54], and hydroxyquinolinates [55][56][57][58][59][60][61][62][63][64] are known, their derivative chemistry is less developed.…”

“…To-date, Sn(II) derivatives of these systems (i.e., {hp}, {hq} and {hbq}), are limited to a handful of homoleptic [61,64] and heteroleptic [55][56][57][58][59][60]62,63] Sn(II) hydroxyquinolate complexes. Here, we describe the details of the synthesis and structure of a series of Sn(II) complexes supported by the 1,3-, 1,4-and 1,5-κ 2 N,O chelate ligands oxypyridinato (hpH), hydroxyquinolinato {hqH} and oxybenzo[h]quinolinato {hbq}, respectively.…”