Synthesis and Reactivity of a Dithiolate-Bridged Ruthenium−Rhodium Heterobimetallic Dihydride Complex

A new series of heteronuclear metal strings, MRhRh(dpa)4Cl2 and MRhRhM(dpa)4X2, from the reactions of Rh2(dpa)4 with metal ions of group 7 to group 12

A new series of trinuclear and tetranuclear HMSCs, MRhRh(dpa)₄Cl₂ and MRhRhM(dpa)₄X₂, from the reactions of Rh₂(dpa)₄ and metal ions were synthesized.

The group 9 cyclopentadienylmetal cis-ethylenedithiolates as metallodithiolene ligands in metal carbonyl chemistry: analogies to benzene metal carbonyl complexes

The species CpMS₂C₂H₂ (M = Co, Rh, Ir) are aromatic systems that can function as pentahapto six-electron metallodithiolene ligands through all five atoms of their MS₂C₂ rings as in the lowest energy heterobimetallic complexes CpMS₂C₂H₂·Cr(CO)_n (n = 3, 2) and CpMS₂C₂H₂·Fe(CO)₂.

Metallacyclopentadienes: synthesis, structure and reactivity

Metallacyclopentadienes, which possess two M-C(sp²) bonds and feature the structure of M(C[upper bond 1 start]R¹[double bond, length as m-dash]CR²-CR³[double bond, length as m-dash]C[upper bond 1 end]R⁴), are an important class of five-membered metallacycles. They are considered as both reactive intermediates in the stoichiometric and catalytic transformations of organic molecules and useful precursors to main group element compounds, and have received considerable attention in organometallic chemistry, coordination chemistry and synthetic organic chemistry over the past six decades because of their unique metallacyclic structure. This review comprehensively presents the synthesis, structure and reactivity of the s-, p-, d- and f-block metallacyclopentadienes distributed in the whole periodic table. In addition, their application in synthetic organic chemistry and polymer chemistry is summarized. This review aims to be beneficial for the design and synthesis of novel metallacyclopentadienes, and for promoting the rapid development of metallacyclic chemistry.

Tantallacyclopentadiene as a unique metal-containing diene ligand coordinated to nickel for preparing tantalum–nickel heterobimetallic complexes

The mononuclear tantallacyclopentadiene, TaCl₃(C₄H₂^tBu₂), coordinates to Ni to form heterobimetallic complexes of Cl₃Ta(μ-C₄H₂^tBu₂)Ni(L) (L = COD, phosphines, IPr).

A facile and general approach to the Rh–M (M = Co, Rh) single bond supported by ortho-carborane-1,2-dichalcogenolato ligands

A series of hetero- and homo-dinuclear complexes with direct metal-metal interaction are synthesized through reaction of Cp*Rh[E(2)C(2)(B(10)H(10))] (E = S (1a), Se (1b)) and CpRh[S(2)C(2)(B(10)H(10))] (2a) with low valent half-sandwich CpCo(CO)(2) or CpRh(C(2)H(4))(2) under moderate conditions. The resulting products, namely (Cp*Rh)(CpCo)[E(2)C(2)(B(10)H(10))] (E = S(3a); Se(3b)), (Cp*Rh)(CpRh)[E(2)C(2)(B(10)H(10))] (E = S(4a); Se(4b)) and (CpRh)(CpRh)[S(2)C(2)(B(10)H(10))] (5a), are fully characterized by IR and NMR spectroscopy and elemental analysis. The molecular structures of 3a, 3b, 4a, 4b and 5a are established by X-ray crystallography analyses, and the Rh-Co (2.4778(11) (3a) and 2.5092(16) (3b) A) and Rh-Rh bonds (2.5721(8) (4a), 2.6112(10) (4b), 2.5627(10) (5a) A) fall in the range of single bonds.

Synthesis and structure of heterometallic complexes (RhFe, CoFe) containing bridging 1,2-dicarba-closo-dodecarborane-1,2-dichalcogenolato ligands

The prototype hetero-binuclear complexes containing metal-metal bonds, {CpRh[E2C2(B10H10)]}[Fe(CO)3] (Cp = Cp* = eta 5-Me5C5, E = S(5a), Se(5b); Cp = Cp = eta 5-1,3-tBu2C5H3, E = S(6a), Se(6b)) and {CpCo[E2C2(B10H10)]}[Fe(CO)3] (Cp = Cp* = eta 5-Me5C5, E = S(7a), Se(7b); Cp = Cp = eta 5-C5H5, E = S(8a), Se(8b)) were obtained from the reactions of 16-electron complexes CpRh[E2C2(B10H10)] (Cp = Cp*, E = S(1a), Se(1b); Cp = Cp, E = S(2a), Se(2b)), CpCo[E2C2(B10H10)] (Cp = Cp*, E = S(3a), Se(3b); Cp = Cp, E = S(4a), Se(4b)) with Fe(CO)5 in the presence of Me3NO. The molecular structures of {Cp*Rh[E2C2(B10H10)]}[Fe(CO)3] (E = S(5a), Se(5b)), {CpRh[S2C2(B10H10)]}[Fe(CO)3] (6a) {Cp*Co[S2C2(B10H10)]}[Fe(CO)3] (7a) and {CpCo[S2C2(B10H10)]}[Fe(CO)3] (8a) have been determined by X-ray crystallography. All these complexes were characterized by elemental analysis and IR and NMR spectra.