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J Am Chem Soc. 2011 Jun 15;133(23):8814-7. doi: 10.1021/ja201788m. Epub 2011 May 23.

Technetium dichloride: a new binary halide containing metal-metal multiple bonds.

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Department of Chemistry, University of Nevada-Las Vegas, Las Vegas, Nevada 89154, USA.


Technetium dichloride has been discovered. It was synthesized from the elements and characterized by several physical techniques, including single crystal X-ray diffraction. In the solid state, technetium dichloride exhibits a new structure type consisting of infinite chains of face sharing [Tc(2)Cl(8)] rectangular prisms that are packed in a commensurate supercell. The metal-metal separation in the prisms is 2.127(2) Å, a distance consistent with the presence of a Tc≡Tc triple bond that is also supported by electronic structure calculations.

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