%0 Journal Article %T Synthesis and structure of heterometallic clusters of early transition metals %+ Indian Institute of Technology Madras (IIT Madras) %+ Institut des Sciences Chimiques de Rennes (ISCR) %A Prakash, Rini %A Haridas, Anagha %A De, Anangsha %A Roisnel, Thierry %A Ghosh, Sundargopal %Z Council of Scientific and Industrial Research (CSIR), New Delhi, IndiaCouncil of Scientific and Industrial Research (CSIR) - India [01(2939)/18/emr-II] %Z IIT Madras %Z CSIRCouncil of Scientific and Industrial Research (CSIR) - India %Z UGCUniversity Grants Commission, India %< avec comité de lecture %@ 0019-4522 %J Journal of the Indian Chemical Society %I Elsevier %V 96 %N 10 %P 1259-1264 %8 2019 %D 2019 %K Boron %K niobium %K hafnium %K iridium %K heterometallic %Z Chemical SciencesJournal articles %X 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. %G English %L hal-02438540 %U https://univ-rennes.hal.science/hal-02438540 %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ ENSC-RENNES %~ ISCR %~ SCR-CD %~ STATS-UR1 %~ UR1-SPM %~ ISCR-PRATS %~ INC-CNRS %~ UR1-UFR-SPM %~ UR1-HAL %~ UR1-SDLM %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ TEST-HALCNRS %~ UR1-MMS %~ TEST2-HALCNRS