From Homonuclear Metal String Complexes to Heteronuclear Metal String Complexes

Abstract

Keywords:Heterometallic complexes / Metal-metal interactions / Mixed-valent compounds / Electronic structure / Singlemolecule conductanceThe study of metal string complexes with 1D transition-metal frameworks began in the early 1990s. As these complexes provide great insights into metal-metal multiple bonds and may have potential applications as molecular wires, this field of research has grown in the past 20 years. As such, the electronic structures of the simplest trinuclear complexes, the supporting ligand systems, and the single-molecular conduc-

Heterometallic Second-Row Transition Metal Chain Compounds in Two Charge States: Syntheses, Properties, and Electronic Structures of [Mo–Mo–Ru]6+/7+Chains

“…7,8 Of these, heterometallic trinuclear chain compounds supported by the 2,2′-dipyridylamido ligand (dpa) are the simplest, and three separate classes of these have been prepared. Symmetric M A −M B −M A compounds are typically prepared via high-temperature self-assembly methods and feature a d 8 , square-planar transition metal in site B (Ni, Pd, or Pt), with other first-row metals employed in sites A.…”

Construction of a Planar Tetrapalladium Cluster by the Reaction of Palladium(0) Bis(isocyanide) with Cyclic Tetrasilane

“…To overcome these drawbacks, a new methodology called template synthesis has recently been introduced [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In this method, the products are synthesized by clustering multiple metal atoms To overcome these drawbacks, a new methodology called template synthesis has recently been introduced [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28].…”

“…In this method, the products are synthesized by clustering multiple metal atoms To overcome these drawbacks, a new methodology called template synthesis has recently been introduced [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In this method, the products are synthesized by clustering multiple metal atoms on the template.…”

“…The structure of the clusters obtained in this method is highly controllable by using template molecules with appropriate structures; the yield of the product is generally high. Using this synthetic strategy, many transition metal clusters having 1D chain-like structures have been prepared by employing polyenes [10][11][12][13], multidentate phosphines [14][15][16][17], and nitrogen-containing compounds as templates [18][19][20][21][22]. Similarly, the use of (poly)cyclic aromatic hydrocarbons as a template led to the formation of metal clusters with 2D sheet-like structures [23][24][25][26][27][28].…”

Enantiopure Chiral Coordination Polymers Based on Polynuclear Paddlewheel Helices and Arsenyl Tartrate

“…These terms refer to polynuclear paddlewheel complexes with three or more linearly-arranged arranged metal atoms bridged by four equatorial ligands, typically oligopyridylamines. These compounds, often containing metal-metal bonds, have been extensively studied since the late 1990s because of their fascinating magnetic and electronic properties [17][18][19]. Much less studied, however, is the use of such complexes to build extended structures, with only few one-dimensional (1D) and two-dimensional (2D) CPs based on [Co3(dpa)4] 2+ [20][21][22] and [Ni3(dpa)4] 2+ [23,24] (dpa = the anion of 2,2′−dipyridylamine) to be found in the literature.…”