The bonding characteristics and electronic and magnetic properties of organometallic sandwich clusters and nanowires

Abstract

Metal-ligand sandwich clusters and molecular wires, which are constituted by metal atoms and organic/inorganic ligands, show potential applications in molecular recognition, catalysis, nanocomposites, optoelectronic, and biological sensors due to their unique structure, electronic, magnetic, and optical properties. This review focuses on recent progress on organometallic sandwich complexes composed of 3d-transition metal or 4(5)f-lanthanide metal with polycyclic hydrocarbon rings like benzene, naphthalene, anthracene, pentalene, or cyclooctatetraene molecules and their hybrid sandwich structures. The stability, bonding characteristics, molecular magnetism, electronic, and transport properties are discussed. Current challenge and prospects in this field are also addressed.

Complexes of gold and imidazole formed in helium nanodroplets

“…The structures of Au m Im + n that we have identified with out calculations are distinctively different than the sandwich and riceball structures found in studies of complexes consisting of transition metals and aromatic molecules like benzene [31][32][33][34][35][36] and cyclopentadienyl. 17 This distinction is perhaps most clear when comparing the dumbbell AuIm + 2 (structure (e), Figure 4) with, for example, ferrocene Fe(C 5 H 5 ) 2 .…”

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO2nanowire fabrication on edge plane sites reveals electrochemical insights

“…There is significant interest in the production of metal nano-structures via the step decoration method outlined above. 40 Particular attention is focused on metal nanowires due to the interesting electronic, 41 magnetic, 42 and mechanical properties that they possess. 43 They have consequently been utilised in a wide variety of applications; such as in sensors, 44,45 nanoscale photonics, 34 and electronics.…”

Spin Transport Properties of One-Dimensional Benzene Ligand Organobimetallic Sandwich Molecular Wires

“…Since the discovery of ferrocene, organometallic sandwich complexes, composed of metal atoms and π-conjugated ligands, have been inspiring ongoing interests because of their excellent electronic and magnetic properties and have become promising candidates for the next generation of electronic and spintronic devices. To date, various organometallic sandwich complexes, − incorporating organic–monocyclic–hydrocarbon ligands such as Bz­(C 6 H 6 ), − Cp­(C 5 H 5 ), − COT­(C 8 H 8 ), − and so forth and organic–polycyclic–hydrocarbon ligands such as Np­(C 10 H 6 ), , Pn­(C 8 H 6 ), , coronene (C 24 H 12 ), and so forth, have been exemplified; besides, the metal atoms include the 3d transition-metal (TM) atoms and 4f lanthanid...…”