Xenophilic Complexes Bearing a TpR Ligand, [TpRM?M?Ln] [TpR=TpiPr2, Tp# (TpMe2,4-Br); M=Ni, Co, Fe, Mn; M?Ln=Co(CO)4, Co(CO)3(PPh3), RuCp(CO)2]: The Two Metal Centers are Held Together not by Covalent Interaction but by Electrostatic Attraction

Synthesis and characterization of heteromultinuclear Ni/M clusters (M = Fe, Ru, W) including a paramagnetic (NHC)Ni-WCp*(CO)3 heterobinuclear complex

A diverse range of heteromultinuclear NiI/[MCO] clusters (MCO = CpFe(CO)2, CpRu(CO)2, Cp*W(CO)3) supported by a N-heterocyclic carbene ligand have been synthesized by reacting the NiI precursor, [IPrNi(μ-Cl)]2, with [MCO]- reagents under various conditions. Clusters with Ni2Fe2, NiFe2, Ni2Ru, Ni2Ru2, NiRu2, and Ni2W, and NiW cores were all characterized using NMR and IR spectroscopies and X-ray crystallography. The NiI-containing paramagnetic heterobinuclear species, IPrNi-Wp* (7), was further characterized by EPR spectroscopy and DFT calculations. Notably, unlike previously studied (NHC)CuI-[MCO] derivatives, complex 7 was found to coordinate Lewis bases like 3-chloropyridine to produce (IPr)(3-Clpy)NiWp* (9). Complex 9 further underwent thermolytic C-Cl activation, proposed to involve NHC-free [(3-Clpy)Ni(μ-Wp*)]2 (10), to provide the C-arylated N-heterocyclic carbene product, [IPr(py-3-yl)]+[Cp*WCl2(CO)2]- (11).

Synthesis, structure and reactivity of [TmBut]ZnH, a monomeric terminal zinc hydride compound in a sulfur-rich coordination environment: access to a heterobimetallic compound

The zinc hydride complex, [Tm^But]ZnH, undergoes insertion of CO₂ and facile protolytic cleavage, of which the latter provides access to heterobimetallic [Tm^But]ZnMo(CO)₃Cp.

Metal-induced B-H bond activation: reactions between half-sandwich Ir and Rh complexes with carboranylthioamide

Novel half-sandwich metal (Ir, Rh) complexes constructed from carboranylthioamide ligands containing an unexpected metal-boron bond were synthesized and characterized. The strong base n-butyllithium is demonstrated to be necessary in the reaction process.

Crystal structure of tricarbon-yl(N-di-phenyl-phosphanyl-N,N'-diisopropyl-P-phenyl-phospho-nous di-amide-κ(2) P,P')cobalt(I) tetra-carbonyl-cobaltate(-I) toluene 0.25-solvate

The title compound {Co(CO)₃[Ph₂PN(i-Pr)P(Ph)N(H)i-Pr]}[Co(CO)₄] is an ionic species consisting of a Co(CO)₃[Ph₂PN(i-Pr)P(Ph)N(H)i-Pr] cation and a [Co(CO)₄] anion.

The asymmetric unit of the title compound, [Co(C₂₄H₃₀N₂P₂)(CO)₃][Co(CO)₄]·0.25C₇H₈, consists of two crystallographically independent cations with similar conformations, two anions, and one-half of a toluene mol­ecule disordered about an inversion centre. In the cations, a Co/P/N/P four-membered slightly bent metallacycle is the key structural element. The pendant NH group is not coordinated to the Co^I atom, which displays a distorted trigonal–bipyramidal coordination geometry. Weak inter­ionic hydrogen bonds are observed between the NH groups and a carbonyl group of the tetrahedral [Co(CO)₄]⁻ anions.