Fluorescent phenoxy benzoxazole complexes of zirconium and hafnium: synthesis, structure and photo-physical behaviour

被引：5

作者：

Kuhlmann, Lisa ^{[1
]}

Methling, Rafael ^{[1
]}

Simon, Jasmin ^{[1
]}

Neumann, Beate ^{[1
]}

Stammler, Hans-Georg ^{[1
]}

Strassert, Cristian A. ^{[2
,3
]}

Mitzel, Norbert W. ^{[1
]}

机构：

[1] Univ Bielefeld, Fak Chem, Lehrstuhl Anorgan Chem & Strukturchem ACS, CM2, Univ Str 2-5, D-33615 Bielefeld, Germany

[2] Westfalische Wilhelms Univ Munster, Inst Phys, Heisenbergstr 11, D-48149 Munster, Germany

[3] Westfalische Wilhelms Univ Munster, Ctr Nanotechnol, Heisenbergstr 11, D-48149 Munster, Germany

来源：

DALTON TRANSACTIONS | 2018年 / 47卷 / 32期

关键词：

INTRAMOLECULAR PROTON-TRANSFER; RING-OPENING POLYMERIZATION; NICKEL BENZAZOLATE COMPLEXES; CATALYTIC-PROPERTIES; LIGANDS SYNTHESIS; TRANSFER ESIPT; EMISSION; SALICYLBENZOXAZOLE; PHOTOLUMINESCENCE; EPOXIDES;

D O I：

10.1039/c8dt01757c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of ten heteroleptic and homoleptic mononuclear Zr(iv) and Hf(iv) complexes bearing differently substituted phenoxy-benzoxazole ligands was synthesised. The complexes were characterised by H-1 and C-13{H-1} NMR spectroscopy as well as by elemental analyses and X-ray diffraction experiments. The molecular structures show octahedral or tetragonal-antiprismatic coordination motifs at the metal atom. The crystal packing patterns depend on the substitution of the ligands. The intermolecular interactions in the solid state are governed by weak - interactions, and are also dependent on the ligand structure. Photo-physical investigations reveal that all ten complexes show a ligand-centered fluorescence with emission maxima in the blue region of the electromagnetic spectrum.

引用

页码：11245 / 11252

页数：8