Salen-type zirconium complexes with a labile coordination site and a robust skeleton: crystal structure of (t-Bu-4-salen)ZrCl2(H2O)
2004 (English)In: Journal of Organometallic Chemistry, ISSN 0022-328X, E-ISSN 1872-8561, Vol. 689, no 7, 1212-1217 p.Article in journal (Refereed) Published
Treatment of LZrCl2 (L - N, N'-ethylenebis(3,5-di-tert-butylsalicylideneiminato) (1), N, N'-o-phenylenebis(3,5-di-tert-butylsalicylideneiminato) (2)), which is an effective catalyst precursor for ethylene oligomerization, with 1.5 equiv of water in toluene afforded H2O-coordinating salen-type zirconium complexes [LZrCl2(H2O)]. The effects of the content of H2O and the temperature on the equilibrium of association and disassociation of H2O molecule in [LZrCl2(H2O)(n)] (n = 0, 1) were studied in solution (CDCl3) by H-1 NMR spectroscopy. The crystal and molecular structure of [1(H2O)] was determined by X-ray diffraction analysis, which revealed that a herringbone supramolecular assembly was constructed in the crystalline state of [1(H2O)], stacked by the intermolecular hydrogen bonds between the OH group of the coordinating H2O and one of the chloride ligands.
Place, publisher, year, edition, pages
2004. Vol. 689, no 7, 1212-1217 p.
zirconium complex, Schiff base, water coordination, supramolecular chemistry, ethylene oligomerization, acen = n,n'-ethylenebis(acetylacetoneiminate), quadridentate schiff-base, metal-complexes, aqua complexes, ligand, tetrahydrofuran, ethylene, zr, fe, polymerization
IdentifiersURN: urn:nbn:se:kth:diva-23288ISI: 000220549200015OAI: oai:DiVA.org:kth-23288DiVA: diva2:341986
QC 201005252010-08-102010-08-10Bibliographically approved