Synthese und Eigenschaften von 1,2,4,3‐Thiadiazaboretidinen. Kristallstruktur des 2,4‐Di‐tert‐butyl‐3‐phenyl‐1,2,4,3‐thiadiazaboretidins

New Bonding Modes for Boraamidinate Ligands in Heavy Group 15 Complexes: Fluxional Behavior of the 1:2 Complexes, LiM[PhB(NtBu)2]2 (M = As, Sb, Bi)

“…A survey of the literature of bam complexes of p-block elements reveals that most attention has been accorded to groups 13, ,, 14, − ,− and 16. − For the group 15 elements, only phosphorus derivatives have been reported, , all of which fall under the category of mono-boraamidinates that adopt bonding mode A . The purpose of this investigation was to explore the coordination behavior of the bam ligand in complexes of the heavier group 15 elements and, especially, to assess the stereochemical influence of the lone pair on the main group metal center in the structures of the bis-bam complexes Li[M(bam) 2 ] (M = As, Sb, Bi).…”

Bis(alkylamido)phenylborane Complexes of Zirconium, Hafnium, and Vanadium

“…Diamines of bis(alkylamido)phenylboranes have been known since 1957, and they can be prepared readily from the reaction of dichlorophenylborane with 4 equiv of a primary amine . The lithiated amide derivatives of these amines were first reported in 1990; a subsequent chemistry has evolved for PhB(RN) 2 2- complexed to main group elements. − The transition metal chemistry of these ligands, however, has been little explored, with only three such complexes reported in the literature. , Herein we expand the coordination chemistry of this novel ligand architecture with the synthesis of a series of zirconium, hafnium, and vanadium complexes.…”