Five-coordinate organoaluminum acetylides and crystal structure of the hydrosylate, [Salophen(Bu)Al]2O
نویسندگان
چکیده
The first examples of five coordinate aluminum acetylide compounds chelated by a single ligand are reported in this paper. The combination of L(Bu)AlCl (where L1⁄4 Salen (1), Salpen (2), Salophen (3), Salomphen (4)) with LiCBCPh in THF at )78 C leads to the formation of the four acetylides (5–8), LCBCPh. These are extremely moisture sensitive and readily hydrolyze to form aluminum hydroxides and with condensation form compounds of formula [L(Bu)Al]2O. The hydrosylate [Salophen( Bu)Al]2O (9) has been structurally characterized. 2003 Elsevier B.V. All rights reserved.
منابع مشابه
Five-coordinate aluminum bromides: synthesis, structure, cation formation, and cleavage of phosphate ester bonds.
The alkane elimination reaction between Salen((t)Bu)H(2) ligands and diethylaluminum bromide was used to prepare three Salen aluminum bromide compounds salen((t)Bu)AlBr (1) (salen = N,N'-ethylenebis(3,5-di-tert-butylsalicylideneimine)), salpen((t)Bu)AlBr (2) (salpen = N,N'-propylenebis(3,5-di-tert-butylsalicylideneimine)), and salophen((t)Bu)AlBr (3) (salophen = N,N'-o-phenylenenebis(3,5-di-ter...
متن کاملModulation of the luminescence quantum efficiency for blue luminophor {Al(salophen)}(+) by ester-substituents.
A series of Al(III) complexes of a salophen (N,N'-bis(salicylidene)-o-phenylenediamine) derivative with an ester substituent at the C5 position of the salicylidene rings have been prepared and their luminescence properties investigated. All exhibit a bright blue emission (lambda(em) = 478 nm) that is observed neither for other metal ions nor with the non-functionalized ligand. Moreover, the est...
متن کاملNote First example of a borate-bridged dimeric aluminum Schiff-base complex containing five-coordinate metal centers
The formation of a borate-bridged dimeric aluminum Schiff-base compound [salen(Bu)Al]2O2BOMe [salen=N,N’-ethylenebis(salicylidenimine) (1) has been reported. Complex 1 crystallizes in a triclinic P space group with a=14.57, b=15.15, c=15.84 Å and a=96.92, b=90.82, g=105.538. The crystal structure shows the presence of a metaborate (MeOBO2 2– ) bridge between two five-coordinate aluminum atoms w...
متن کاملPhotochemical nitric oxide precursors: synthesis, photochemistry, and ligand substitution kinetics of ruthenium salen nitrosyl and ruthenium salophen nitrosyl complexes.
Described are syntheses, characterizations, and photochemical reactions of the nitrosyl complexes Ru(salen)(ONO)(NO) (I, salen = N,N'-ethylenebis(salicylideneiminato) dianion), Ru(salen)(Cl)(NO) (II), Ru((t)Bu(4)salen)(Cl)(NO) (III,(t)Bu(4)salen = N,N'-ethylenebis(3,5-di-tert-butylsalicylideneiminato) dianion), Ru((t)Bu(4)salen)(ONO)(NO) (IV), Ru((t)Bu(2)salophen)(Cl)(NO) (V, (t)Bu(2)salophen =...
متن کاملSynthesis and Crystal Structure of a Novel Six-Coordinate Gallium (III) Complex
The reaction of gallium (III) nitrate octahydrate with the proton transfer compound (pydaH2)2+ (pydc)2– ( where pyda is 2,6-pyridinediamine and pydcH2 is 2,6-pyridinedicarboxylic acid) leads to the formation of (C5H8N3) [Ga(C7H3NO4)2] · 4H2O · CH3OH. The crystal system of the anionic complex is triclinic with space group Pī and two molecules per unit cell. The unit cell parameters are a=10.23...
متن کامل