Formazanido complexes of heavier group 13 elements aluminium, gallium, and indium

Abstract

The preparation, molecular structures and physical properties of novel heavy group 13 metal formazanido complexes are described. The trimethyl derivatives MMe 3 (M = Al, Ga, In) react with 1,3,5-triphenylform-

Heteroleptic Iminophosphonamide In(III) Complexes: Source of Mild Lewis Acid Indium Centers

“…The N(1)‐In(1)‐N(2) bite angle in 4 (66.98(2)°) is similar to the bite angle in 1 (67.49(2)°) and smaller than the corresponding angle in 3 (69.70(2)°). The pentacoordinated geometry around In(III) in complexes 1–4 are similar to that seen recently by Sundermeyer …”

“…The pentacoordinated geometry around In(III) in complexes 1-4 are similar to that seen recently by Sundermeyer. [18] Conclusions In conclusion we have been able to utilize the ability of iminophosphonamide to strongly chelate with In(III) centers. This work is the only report on In(III) complexes with iminophosphonamides and the complexes LInCl(m-Cl) 2 Li·2OEt 2 , LInCl 2 (THF), the dimer [LInCl(m-Cl)] 2 , and the adduct LInCl 2 ·(O=P (Ph 2 )NHtBu) are the first indium complexes with an iminophosphonamide and would serve as useful synthons to elaborate their further reaction chemistry.…”

Formazanate coordination compounds: synthesis, reactivity, and applications

“…The Sundermeyer group prepared the first heavy group 13 complexes of formazanates 81a-c by stirring the respective MMe 3 (M = Al, Ga, In) species with a triarylformazan in toluene (Scheme 30a). 94 These complexes contained tetrahedral group 13 atoms and were generally moisture sensitive, although this sensitivity was attenuated by the coordination of dimethylaminophyridine (DMAP) when M = In. Complexes 81a-c exhibited low-energy absorption maxima and large molar extinction coefficients (81a: l max = 559 nm, e = 16 210 M À1 cm À1 ; 81b: l max = 576 nm, e = 20 960 M À1 cm À1 ; 81c: l max = 591 nm, e = N/A).…”

Versatile Bulky N,N′,N′‐Substituted 1,2‐Ethanediamine Ligands and Their Lithium, Aluminium, and Gallium Derivatives

“…In this context, the steric demands and electronic properties of the ligand are of crucial importance and new classes of ligands might provide access to so far unknown species. Recently, Stalke and co‐workers introduced heterocyclic substituted methanides ( D ) as promising alternatives and also other monoanionic N , N ′‐chelating ligands such as aminotroponimines, formazans and anilidoimines have been described in the literature. Although most of them are conceived as spectator ligands, recent results indicate a noninnocent behaviour and the redox activity becomes more likely in expansively delocalized ligands .…”