• Dr. Shashibala Kumari

The halides of low valent early metals often are clusters with extensive M-M bonding. These clusters are shwn by metal having high energy of atomisation (high M.P. and B.P.) Most refractory metals like (Zn, Nb, Mo, Re, Ru, Rh, Os, In, Pt) have greater tendency to form cluster Metal halide derivatives in which the transition metal has a relatively low oxidation state. Metal cluster compounds are a molecular ion or neutral compound composed of three or more metals are featuring significant metal-metal interaction. For the earliest metals Zr and Hf, interistial carbide ligands are also common. One example is 2r6CCl12. Another common structure has six terminal halides and 8 bridging halides, eg. . IN terms of history, Linus pawling showed that consisted of octahedra. F. Albert cotton established that ReCl3 in fact feature submits of the cluster . X-ray crystallography and to a lesser extent mass spectrometry are also indispensable for the unambiguous identification of new metal cluster system.

Metal-Metal bonding, Metal cluster halides, Refractory metal, X-ray crystallography.

"Studies in Metal-Metal bonding in metal cluster halides", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 2, page no.268-271, February-2017, Available :http://www.jetir.org/papers/JETIR1702043.pdf

"Studies in Metal-Metal bonding in metal cluster halides", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 2, page no. pp268-271, February-2017, Available at : http://www.jetir.org/papers/JETIR1702043.pdf