Platinum diacetylide

Bauerle and coworkers have adapted the Cu+ template (48) approach to [2]cate-nane synthesis using an intermediate platinum diacetylide linkage to macrocyclize each of the two rings (49, Scheme 10.9) [38], Oxidation of the platinum centers in the macrocyclic rings of SO with I2 induces reductive elimination of the two acetylides to form the 1,3-butadiyne linked macrocycles (51). Unfortunately, the authors could not remove the copper template in this example, likely as a result of steric congestion about the metal ion in the interlocked product. 

Hi. Metal—Metal Bond. Puddephatt and co-workers have reported the synthesized polymers with main-chain Pt-Pt bonds via the reaction of a platinum complex with various diacetylides and diisocyanides (Scheme 2.4).74 The reaction of 26 with diacetylides formed oligomers possessing low solubility. Polymers isolated from the reactions of 26 with diisocyanides did not possess any uncoordinated isocyanide groups. 

Polymeric materials containing Pt—Pt bonds in their backbones have been examined (46). The formation of platinum polymers (23) was achieved via reaction of the platinum complex (21) with diacetylides, diphosphines, or diisocyanides (22) (eq. 7). 

Oligomers and polymers containing backbone Pt-Pt bonds have been reported via reactions of a platinum complex with diacetylides and diisocyanides (scheme 37). Oligomers wiffi low solubility were formed in die reactions with diacetylides. IR studies on ffie polymers formed with reaction of diisocyanides did not exhibit imco-ordinated isocyanide groups. 

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