Interpenetrating 10,3 -b Nets

Figure 25. (a) Three interpenetrating (10,3)-b nets with T-shaped 3-connecting nodes in the structure of [Ag(bipy)]N03. Circles represent Ag atoms. Long connections are via bridging bipy units and short connections are direct Ag... Ag interactions, (b) An idealized version of the mode of interpenetration of three (10,3)-b nets, of the type seen in [Ag(bipy)]N03. 

Interpenetration has also been observed for other achiral types of (10,3) nets—the structures of Zn3(tpt)2X6, X = Cl, 1, contain two interpenetrating (10,3)-b nets, while [Cu(4,4 -bipy)i.5]N03-1.251120 contains six such nets interpenetrating. CoLi.5(N03)2-H20, L = l,4-bis(3-pyridyl)-2,3-diazabuta-l,3-diene, contains four (10,3)-d nets. Similar to (10,3)-a, the (8,3)-a net is chiral, and [Cu2(tae)(4,4 -bipy)2](N03)2, tae = dibasic tetraacetyl-ethane, contains four such nets of the same hand interpenetrating. ... 

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