Binaphtholato complexes of tungsten(VI) from tris(1,2-ethanediolato)tungsten(VI). Synthesis and X-ray structures of [W(bino)(diolato)(2)] complexes




Lehtonen A, Sillanpaa R

PublisherPERGAMON-ELSEVIER SCIENCE LTD

2000

Polyhedron

POLYHEDRON

POLYHEDRON

19

26-27

2579

2584

6

0277-5387

DOIhttps://doi.org/10.1016/S0277-5387(00)00560-X



Racemic 6,6'-disubstituted-1,1'-bi-2-naphthols H(2)X(2)bino (X = H, Br) and corresponding binaphthyl acetates react with trisdiolatetungsten(VI) complexes [W(eg)(3)] and [W(eg)(pin)(2)] (eg = ethanediolate dianion, pin = pinacolate dianion) forming heteroleptic complexes [W(X(2)bino)(diolato)(2)]. The X-ray crystal structure determinations confirmed that the isolated compounds are made of monomeric tris(diolate)tungsten(VI) molecules in which the central tungsten atom is bonded to six oxygen atoms forming a distorted octahedral coordination sphere around the metal ion. (C) 2000 Elsevier Science B.V. All rights reserved.



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