Issue 70, 2004

Synthetic crystallography: synthon mimicry and tecton elaboration in metallate anion salts

Abstract

The use of molecular tectons (building blocks) able to form cyano-based hydrogen bonded synthons (NH⋯NC) to synthesise a diverse range of crystal structures is described. Square planar dianionic metal complexes with 4 terminal cyano groups are shown to form salts with the dications [4,4′-H2bipy]2+ and [4,4′-H2bipip]2+ in which hydrogen bond networks of varying dimensionality are formed. The structures of new salts of these cations with [M(CN)4]2−, [M(SCN)4]2−, and [M(mnt)2]2− (M = Pt, and in one case Pd) are reported and compared with those of analogous [MCl4]2− and [M(dtox)2]2− salts. The consequences of the stereochemical preference of the cyano group for linear CN⋯H hydrogen bonding and the prospects for the elaboration of cyano-functionalised tectons to afford chemical and structural diversity in the structures synthesised are discussed.

Graphical abstract: Synthetic crystallography: synthon mimicry and tecton elaboration in metallate anion salts

Article information

Article type
Paper
Submitted
21 mai 2004
Accepted
14 jul 2004
First published
20 set 2004

CrystEngComm, 2004,6, 419-428

Synthetic crystallography: synthon mimicry and tecton elaboration in metallate anion salts

P. C. Crawford, A. L. Gillon, J. Green, A. G. Orpen, T. J. Podesta and S. V. Pritchard, CrystEngComm, 2004, 6, 419 DOI: 10.1039/B407722A

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