Synthesis and structure of heterometallic clusters of early transition metals

Rini Prakash (1) , Anagha Haridas (1) , Anangsha De (1) , Thierry Roisnel (2) , Sundargopal Ghosh (1)

1 IIT Madras - Indian Institute of Technology Madras
2 ISCR - Institut des Sciences Chimiques de Rennes

In continuation of our recent studies on the reactivity of [(Cp*Nb)(2)B4H10O], I with metal carbonyls, we have carried out its reactivity with [Fe-2(CO)(9)) that led to the formation of [(Cp*Nb)(2)B2H4O{H2Fe2(CO)(6)BH}], 1. Compound 1 is a heterometallic boride cluster in which [Nb2Fe2] core describes a butterfly framework with one boron atom lying in a semi -interstitial position. Further, in an attempt to isolate the heterometallic metallaboranes of group 4, we have performed the thermolysis reaction of [Cp2Hf(BH4)(2)] with [Cp*IrB3H9] that led to the formation of arachno-[(Cp2HO(Cp*Ir)B3H9], 2, analogous to [(Cp2Zr)(Cp*Ir)B3H9]. Compounds 1 and 2 have been characterized by mass spectrometry, H-1, B-11 and C-13 NMR spectroscopy and the structural types were unequivocally established by crystallographic analysis.

Mots clés: Boron; niobium; hafnium; iridium; heterometallic

Domaines: Chimie

Rini Prakash, Anagha Haridas, Anangsha De, Thierry Roisnel, Sundargopal Ghosh. Synthesis and structure of heterometallic clusters of early transition metals. Journal of the Indian Chemical Society, 2019, 96 (10), pp.1259-1264. ⟨hal-02438540⟩