ECTOC-3 Search Search [Related articles/posters: 028 019 033 ]
IRL Logo

Linked Cyclopentadienyl Sulfonamido Complexes of Titanium and Zirconium

Cornelis Lensink and Neil B. Milestone

The New Zealand Institute of Industrial Research and Development
PO Box 31-310, Lower Hutt
New Zealand

Contents

Introduction
Ligands synthesis
Ligand structure
Complex synthesis
Titanium complex structure
Discussion

Introduction

There is an increasing interest in bidentate ligands for early transition metals in which the ligand contains a cyclopentadienyl group and another anionic ligand group. (Examples from the recent literature can be found here). This has promted us to investigate the synthesis and chemistry of ligands in which a cyclopentadienyl group is linked to a sulfonamido group.

Our aim was to develop a ligand synthesis strategy which was (a) simple and (b) uses starting materals which are readily available and for which (c) modification of the ligand structure were simple to implement. Scheme 1 shown below summarizes the ligand synthesis and shows that we have achieved the aims of our synthethic strategy. A complete discussion of the ligands synthesis, experimental details and an xray crystal structure of one of the novel ligands can be found in the ligand section of this poster.

Scheme 1

For the synthesis the titanium and zirconium complexes we have employed an amine elimination reaction as illustrated in scheme 2 below. A detailed discussion of the transition metal complex synthesis and experimental details can be found in the complex section. A single xray crystal structure of one of the complexes is also presented there.

Scheme 2

Top
Next