A Three-Dimensional Coordination Polymer with an Expanded NbO Structure

Abstract

The connection of square‐planar [Ni(CN)4]2− ions with Ph3Sn+ ions results in 1, a noninterpenetrated three‐dimensional coordination polymer with an expanded NbO structure. The (Ph3Sn)2Ni(CN)4 framework (shown schematically without phenyl groups and solvent molecules) displays a large central cavity that is occupied by Ph3SnOH, acetonitrile, and water molecules.

Two Unprecedented 3‐Connected Three‐Dimensional Networks of Copper(I) Triazolates: In Situ Formation of Ligands by Cycloaddition of Nitriles and Ammonia

“…It was suggested that, among numerous topological nets, the most important and plausible targets for designed synthesis are those with “simple, high‐symmetry” structures 4. However, only a very limited number of types of simple three‐dimensional (3D) 3‐connected2 and 4‐connected nets based solely on square‐planar nodes, such as the cubic NbO (6 4 8 2 ),3a,b tetragonal CdSO 4 (6 5 8),3c “dense net” (7 5 9),3d and 4.4.8 4 .8 4 .8 8 .8 8 3e nets have been reported so far, in contrast to the widely established 2D 3‐connected honeycomb or brickwall (6 3 ) and 4‐connected square grids (4 4 ) 1. Meanwhile, some 3‐connected nets can be described as augmented 4‐connected nets by substituting four adjacent 3‐connected nodes for 4‐connected nodes,4, 5 for example, 4.8 2 for 4 4 , 4.12 2 for NbO (6 4 8 2 ), and 4.14 2 for diamond (6 6 ) 2c…”

“…The 4.12 2 net can also be simplified to an NbO net (Figure 2 c) if each {Cu 2 (ptz) 2 } subunit (Figure 2 a) is considered as 4‐connected node,4 an example distinct from the rarely observed, true 4‐connected NbO nets 3a. b Similar to other NbO nets, the network of 2 also contains channels, which are mainly occupied by the disordered propyl groups.…”

Cluster Linker Approach: Preparation of a Luminescent Porous Framework with NbO Topology by Linking Silver Ions with Gold(I) Clusters

“…The 3D crystal structure of 2 is shown in Figure 2 c. The structure contains two interpenetrated frameworks based on the 6 4 8 2 topology (Figure 2 d). [21][22][23] Although interpenetration occurs in this structure, it features 1D channels along the c direction. The diameter of each hexagonal channel is about 1.1 nm.…”

18 Supramolecular coordination chemistry

“…75 The chiral three-dimensional coordination polymer based on Zn 2 and the achiral ligand [L 68 ] À contains two intersecting 6-fold helices, and has modest second-order non-linear optical activity which is allowed by the non-centrosymmetric structure. 85 Catenates, rotaxanes and knots [Li 3 (L 72 ) 2 ] 3 is a trinuclear double helicate; linking the open ends by a ring-closing metathesis reaction results in a doubly interlocked [2]catenane (Fig. 77 Other networks with threefold symmetry have been prepared from copper(I) halides and 1,3,5-triazine.…”