88657-60-7

Upstream product

• 83732-33-6 tris(propionitrile)tungsten tricarbonyl 
• 16800-47-8 tricarbonyl-tris(acetonitrile)tungsten⁽⁰⁾ 

Downstream Products

• 112680-37-2 (C₆H₅)3PNP(C₆H₅)3⁽¹⁺⁾*WFe₃(CO)13(CH)^(1-)={(C₆H₅)3PNP(C₆H₅)3}{WFe₃(CO)13(CH)} 

Relevant academic research and scientific papers

Mixed-metal cluster carbides and a mixed-metal ketenylidene with nucleophilic carbide sites

The nucleophilic ketenylidene [Fe3(CO)9-(CCO)]2- (III) serves as a convenient mixed-metal carbide precursor. Compound III reacts readily with labile metal carbonyl fragments such as M(CO)3(NCCH3)3 (M = Cr, W) to generate the new clusters [Fe3MC(CO)13]2- which contain a nucleophilic carbide ligand similar to that in [Fe4C(CO)12]2-. By contrast, treatment of III with Co2(CO)8 leads to replacement of one iron vertex, generating a new monoanionic heterometallic ketenylidene [Fe2Co(CO)9(CCO)]- which is less reactive but otherwise chemically similar to III. X-ray cristallographic analysis shows the CCO tilt to be considerably less than in the [Fe3(CO)9(CCO)]2- species.

Synthesis of heterometallic carbide clusters containing three iron atoms: [PPN]2[MFe3(CO)13C] (M = Cr, W), [PPN]2[Cr2Fe3(CO)16C], Rh2Fe3(CO)14C, and [PPN][Rh3Fe3(CO)15C]

Redox-condensation reactions involving [PPN]2[Fe3(CO)9(CCO)] and electrophilic transition-metal reagents lead to [PPN]2-[MFe3(CO)13C] (M = Cr, W), [PPN]2[Cr2Fe3(CO)16C], Rh2Fe3(CO)14C, and [PPN][Rh3Fe3(CO)15C]. Variable-temperature 13C NMR spectroscopy was employed to assign the structures of the tetranuclear clusters and Rh2Fe3(CO)14C in solution. An improved synthesis of [PPN][RhFe3(CO)12C] and more complete variable-temperature (ca. -130 to +20°C) 13C NMR spectra of this cluster and [PPN][MnFe3(CO)13C] are discussed. All of the tetranuclear clusters are assigned butterfly metal geometries with the heterometals located at hinge sites. Attempts to prepare iron-molybdenum carbide clusters are discussed. The structure of [PPN][Rh3Fe3(CO)15C] was determined by a single-crystal X-ray diffraction study and was found to consist of a trigonal-antiprismatic metal array with the carbide ligand within the metal polyhedron. The iron atoms define one of the trigonal faces and the rhodium atoms define the other. Crystal data for [PPN][Rh3Fe3(CO)15C]: monoclinic, space group P21/n, a = 16.220 (6) A?, b = 9.282 (3) A?, c = 35.17 (3) A?, β = 94.84 (5)°, Z = 4.