New Main-Group-Element-Rich nido-Octahedral Cluster System: Synthesis and Characterization of [Et4N][Fe-2(CO)(6)(μ(3)-As)μ(3)-EFe(CO)(4)(2)]

Desmond E. Schipper (1) , Djamila Ikhlef (2, 3) , Samila Khalal (3) , Jean-Yves Saillard (3) , Kenton H. Whitmire (1)

1 Department of Chemistry [Houston]
2 UMAOB - Université Mohamed Akli Ouelhadj de Bouira
3 ISCR - Institut des Sciences Chimiques de Rennes

A series of clusters of the form [Et4N][Fe2(CO)6(μ3-As)}(μ3-EFe(CO)4)], where E is either P or As, were synthesized from [Et4N]2[HAs{Fe(CO)4}3] and ECl3. AsCl3 gives the As-only compound; PCl3 produces compounds having two As atoms with one P atom, or one As atom and two P atoms, and they can exist as two possible isomers, one of which is chiral. The As2P and AsP2 clusters cocrystallize, and their structure as determined by single-crystal X-ray diffraction is given along with the structure of the As-only cluster. Analytical data as well as density functional theory calculations support the formation and geometries of the new molecules.

Keywords: reactivity; complexes; phosphorus; iron; x-ray structures; metal-metal bond; carbonyl clusters; crystal-structure; bridging ligands; s2cpr3 bridges

Domains: Chemical Sciences; Coordination chemistry; Chemical Sciences; Inorganic chemistry

Desmond E. Schipper, Djamila Ikhlef, Samila Khalal, Jean-Yves Saillard, Kenton H. Whitmire. New Main-Group-Element-Rich nido-Octahedral Cluster System: Synthesis and Characterization of [Et4N][Fe-2(CO)(6)(μ(3)-As)μ(3)-EFe(CO)(4)(2)]. Inorganic Chemistry, 2016, 55 (13), pp.6679--6684. ⟨10.1021/acs.inorgchem.6b00921⟩. ⟨hal-01357412⟩