Dynamic Motions of Ligands around the Metal Centers Afford a Fidget Spinner-Type AIE Luminogen.

A new type of aggregation-induced emission (AIE) luminogen containing a dimeric metal fragment and two or three phthalazine ligands is described, which shows dynamic motions of ligands around the metal centers in solution. Based on the variable-temperature and EXSY NMR spectroscopy data, X-ray crystallography structures, and computational results, three different pathways (i.e.

Bis-N-Heterocyclic Carbene Complexes of Coinage Metals Containing Four Naphthalimide Units: A Structure-Emission Properties Relationship Study.

Naphthalimide derivatives provide highly versatile self-assembled systems and aggregated forms with fascinating emission properties that make them potential candidates for many applications such as bioimaging and sensing. Although various aggregated species of naphthalimide derivatives have been well documented, little is known about the correlation between their structure and photophysical properties. Here the preparation of a series of tetrameric naphthalimide molecules in which naphthalimide units are linked by bis-N-heterocyclic carbene complexes of coinage metals is described.

Five- and Six-Coordinated Silver(I) Complexes Formed by a Metallomacrocyclic Ligand with a "AuN" Donor Group: Observation of Pendulum and Linear Motions and Dual Phosphorescence.

The six-coordinated silver(I) complex [AuAg(μ-(PPh)py)(OTf)](OTf), (py = pyridine, OTf = CFSO), and the five-coordinated silver(I) complex [AuAg(acetone)(μ-(PPh)py)](PF), , were prepared by the reaction of the precursor complexes (OTf) and (PF), in which = [Au(μ-(PPh)py)], with 1 equiv of Ag(OTf) in dichloromethane and excess of Ag(PF) in a mixture of dichloromethane/acetone, respectively. Also, the five-coordinated silver(I) complex [AuAg(μ-(PPh)py)(py)(OTf)](OTf), , was obtained by the reaction of with pyridine. The clusters - were characterized using multinuclear NMR spectroscopy and elemental microanalysis.

Tetranuclear AuCu Clusters with Butterfly- and Planar-Shaped Metal Cores: Strong Rigidochromism Induced by Jahn-Teller Distortion in Two-Coordinated Gold(I) Centers.

Two tetranuclear AuCu cluster complexes [AuCu(μ-(PPh)py)(μ-OH)](PF), , and [AuCuCl(μ-(PPh) py)](OTf), , have been prepared by the reactions of precursor complexes [Au(μ-(PPh)py)](OTf), , and [Cu(μ-(PPh)py)(μ-SMe)(OTf)], , with [Cu(NCCH)]PF and AuCl(SMe), respectively. The crystal structures of complexes and were determined by X-ray crystallography, indicating a butterfly-shaped AuCu metal core for and a planar-shaped AuCu metal core for . In complex , the Cu atoms occupy the edge-sharing bond, while in complex , alternating Au and Cu atoms occupy the tetragon vertices.