Masahiro Yamashita

Organolanthanide complexes such as SmMe(C5Me5)2(THF) and [SmH(C5M5)2]2 initiate the living polymerizations of ε-caprolactone and δ-valerolactone to give high molecular weight polyesters (Mn > 70 000) with extremely narrow molecular weight distributions, Mw/Mn < 1.08, while these initiators are completely inert for the polymerization of β-propiolactone. In contrast to lanthanide alkyl complexes, lanthanide alkoxides such as SmOEt(C5Me5)2(OEt2), [YOMe(C5H5)2]2, and YOMe(C5Me5)2(THF) exhibit fairly

We report three self-assembled iron complexes that comprised an anti-parallel open form (o-L_anti ), a parallel open form (o-L_syn ), and a closed form (c-L) of diarylethene conformers. Under kinetic control, Fe^II ₂ (o-L_anti )₃ was isolated, which exhibited a dinuclear structure with diamagnetic properties. Under light-irradiation control, Fe^II ₂ (c-L)₃ was prepared and exhibited paramagnetism and sp

The unique properties of natural tetrapyrrolic compounds have inspired the rapid growth of research interest in the design and synthesis of artificial porphyrinoids and their metal complexes as a basis of modern functional materials. A special role in the design of such materials is played by sandwich complexes formed by tetrapyrrolic macrocycles with rare earth elements, especially lanthanides. The development of synthetic approaches to the functionalization of tetrapyrrolic compounds and their

Since 2003, terbium(iii) bis-phthalocyaninato complexes have been recognised as acting as single molecule magnets (SMMs), propitiating multiple studies with the aim of better understanding the single metal-ion based magnetism with unusually high blocking temperatures. In the quest for novel applications, it became clear that if spintronic devices were made from SMM molecules, their confinement in the proximity of surfaces or electrodes would become difficult to circumvent. In this perspective ar