Metal—acetylide polymers

Electrical properties, rigid-rod transition metal—acetylide polymers, 12, 376... 

Hiickel band calculations, rigid-rod transition metal-acetylide polymers, 12, 371-372 Human health, tin toxic effects, 12, 637 Hybrid magnets, metallocene-containing bimetallic M(II)—Cr(II) oxalates, 12, 427 bimetallic M(II)-Fe(III) oxalates, 12, 432 bimetallic M(III)-Ru(III) oxalates, 12, 435 materials, 12, 437 properties, 12, 425 trimetallic oxalates, 12, 436 Hydantoins, with lead reagents, 3, 888 Hydration... 

Metal activation, and sonochemistry, 1, 314 Metal alkoxides, synthesis, 12, 51 Metal-to-alkyne ligand charge-transfer transitions, rigid-rod transition metal—acetylide polymers,... 

The synthesis of several high molecular-weight platinum polyyne polymers carrying chiral (R)-l,l -bi-2-naphthol bridge, P17, was described.48 These represent the first examples of metal acetylide polymer with an optically active backbone. They display much larger specific negative optical rotations than both the metal-free alkyne precursors and their corresponding dinuclear model compounds. These results support the fact that the main chain of P17 adopts a one-handed helical conformation and induces the helical chirality of the polymers. 

Approaches to the preparation of high molecular weight group 10 metal-acetylide polymers 365... 

An array of versatile and efficient step-growth polycondensation methodologies has been developed for the synthesis of transition metal-acetylide polymers. In this section, a representative review of the types of routes available and materials accessible is given. 

Although the aforementioned methods are generally applicable for the incorporation of group 10 metals into metal-acetylide polymers, these approaches could not be extended to metals from groups 8 and 9 due to the instability of the starting complexes in amine solvents. Research efforts into the molecular chemistry of hydrido-acetylide complexes of rhodium have resulted in a facile route to group 9 polymers 169 and This method involves... 

Rigid-Rod Transition Metal Acetylide Polymers 1171 Table 5.4 Third-order nonlinear optical coefficients for some Pt-polyynes [84]... 

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