A new 65.8 topology and a distorted 65.8 CdSO4 topology: two new supramolecular isomers of [M2(bdc)2(L)2]n coordination polymersElectronic supplementary information (ESI) available: schematic illustrations of some common 4-connected 3D networks. See http://www.rsc.org/suppdata/cc/b3/b301221b/

Abstract

We report the crystal structures of two new coordination polymers that have similar composition but, despite having the same circuit symbol and Schläfli notation, different topologies: a novel 3D topology (USF-1) and a CdSO4-like topology.

Three-dimensional Euclidean nets from two-dimensional hyperbolic tilings: kaleidoscopic examples

“…Projection of this subgroup tiling onto the gyroid, via the U-tiling UQC104, gives an e-net, egc104, whose barycentric form is a rhombohedral (R3c) vertex-1-transitive (uninodal) s-net in three-dimensional Euclidean space, sqc906, labelled usf by . This structure has been identified in molecular frameworks (Moulton et al, 2003), yet three-dimensional tiling theory cannot find a 'proper' tiling for this pattern.…”

Nickel(II) Coordination Polymers – 4,4′‐Bipyridine‐Connected Six‐ and Four‐Fold Metal–Succinate Helices and Their Corresponding Chiral and Achiral Networks

“…[ [45][46][47] The network in 2 may be described as distorted 6 5 .8 net [47] due to the lack of colinearity in the con- nections parallel to the ab-plane caused by the fourfold helical nature of the Ni-suc chains. For both 1 and 2, the phase purity of the synthesized product was confirmed by comparing the powder X-ray diffraction patterns with those simulated from the single-crystal data using Mercury 2.4 software.…”

A CdSO4-like 3-D framework constructed from monosodium substituted Keggin arsenotungstates and copper(II)-ethylenediamine complexes

“…Comparing the topology of 1 with those of known minerals, 1 possesses the 6 5 Á8 distorted CdSO 4 topology (Fig. 1e) [32], being obviously different from other 4-connected topologies of minerals: diamond (6 2 Á6 2 Á6 2 Á6 2 Á6 2 Á6 2 ), NbO (6 2 Á6 2 Á6 2 Á6 2 Á8 2 Á8 2 ), PtS (4Á4Á8 2 Á8 2 Á8 2 Á8 2 ) and CrB 4 (4Á6 2 Á6Á6Á6Á6) [34].…”

“…Additionally, the analysis of network topology is an important tool in the design and interrogation of crystal structures. As a result, the simplification of 3-D networks to the node-and-spacer representations that illustrate their connectivity has facilitated the analysis and understanding of complicated topologies by crystal engineering [32]. The circuit symbols and Schläfli (vertex) notations can be used to describe topologies and facilitate comparison of networks of different composition and metrics.…”