Crystal structure of a compact three-dimensional metal–organic framework based on Cs+ and (4,5-di­cyano-1,2-phenyl­ene)bis­(phospho­nic acid)

Acta Crystallographica Section E: Crystallographic Communications

, J. P.C.¹  Mendes, R.F.²  Venkatramaiah, N.³  Tomé³  Almeida Paz, F.A.⁵ 

[1] Centro de QuíDepartment of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal;Department of Chemistry, QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal;cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;mica Estrutural, Instituto Superior Té

关键词: CRYSTAL STRUCTURE;    CAESIUM;    METAL-ORGANIC FRAMEWORK;    PHOSPHONIC ACID LIGAND;   

DOI  :  10.1107/S2056989016016765

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

A new metal–organic framework compound, poly[[μ7-dihydrogen (4,5-di­cyano-1,2-phenyl­ene)diphospho­nato]­(oxonium)caesium], [Cs(C8H4N2O6P2)(H3O)]n (I), based on Cs+ and the organic linker 4,5-di­cyano-1,2-phenyl­ene)bis­(phospho­nic acid, (H4cpp), containing two distinct coordinating functional groups, has been prepared by a simple diffusion method and its crystal structure is reported. The coordination polymeric structure is based on a CsO8N2 complex unit comprising a monodentate hydro­nium cation, seven O-atom donors from two phospho­nium groups of the (H2cpp)2− ligand, and two N-atom donors from bridging cyano groups. The high level of connectivity from both the metal cation and the organic linker allow the formation of a compact and dense three-dimensional network without any crystallization solvent. Topologically (I) is a seven-connected uninodal network with an overall Schäfli symbol of {417.64}. Metal cations form an undulating inorganic layer, which is linked by strong and highly directional O—H⋯O hydrogen-bonding inter­actions. These metallic layers are, in turn, connected by the organic ligands along the [010] direction to form the overall three-dimensional framework structure.

【 授权许可】

CC BY