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Herein we report the first non-iron polymer obtained from an ansa half-sandwich complex. This polymeric organometallic material was obtained from a new disilanediyl-bridged ruthenium complex upon thermally induced ring-opening polymerization (ROP). Additionally, a corresponding distannanediyl-bridged osmium species is reported, the first example of an ansa half-sandwich complex of this element.
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Braunschweig et al. (2014) studied this question.
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