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The cover picture shows the [2ฯซ2] grid, [Cu 1 4 (2ฯฉ2) 2 ) 4ฯฉ , of four copper(I) ions and two (2ฯฉ2) Schiff-base macrocycles, which self-assembles when copper(I) ions are used to template the reaction of 3,6-diformylpyridazine with 1,3-diaminopropane. In each case the two parallel strands of the [2ฯซ2] grid are linked together in a single (2ฯฉ2) Schiff-base macrocycle, and the two macrocycles approach each other at right angles to give rise to the perpendicular strands of the grid structure. Thus, the copper(I) ions have distorted tetrahedral geometries, with each macrocycle providing a bidentate donor set at right angles to that supplied by the other macrocycle. Details are discussed in the Microreview by S.
๐ SIMILAR VOLUMES
The cover picture shows two conformations of the chiral chelate cation [{ฮบ-P(Mes) 2 CH 2 CH(OH)CH 2 -ฮบ-P(Ph 2 }Rh(ฮท 4 -COD)] ฯฉ which is active as an enantioselective hydrogenation catalyst. The ฮด-and ฮป-twist conformations of the six-membered diphosphane chelate cycle are shown together with a projec