✍ Scribed by Nicholas J. Long; Charlotte K. Williams
No coin nor oath required. For personal study only.
Metal alkynyl complexes hold a fascination for synthetic chemists, structural chemists, and materials scientists alike. Harnessing the unique overlap of metal and carbon orbitals is a challenge that can be overcome in many ways and hence, there are many synthetic routes toward MCC bond‐forming reactions that utilize a wide variety of transition‐metal and alkynyl reagents. Some methods can be widely applied, while others are specific to a particular metal or compound. The linear geometry of the alkynyl unit and its π‐unsaturated character have led to metal alkynyls becoming attractive building blocks for molecular wires and polymeric organometallic materials, which can possess interesting properties, such as optical nonlinearity, luminescence, liquid crystallinity, and electrical conductivity. A unique, multifaceted approach, often combining talents from all three of the above chemical disciplines, has served as a driving force behind the intense research into the development of metal alkynyl σ complexes, the progress of which, particularly in the last ten years, is summarized in this review.
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## Abstract A novel series of σ‐alkynyl complexes of orthomercuriated Schiff bases of substituted benzylideneanilines and anthracenylmethyleneanilines were synthesised in good yields by alkynylation of the mercuric chlorides of the appropriate Schiff bases with terminal alkynes RC≡CH (R = Ph, ferro