Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 40, 2013
Previous Article Next Article

Eight novel metal diphosphonates based on 2-(4-pyridinyl)-1-hydroxyl-1,1-ethylidenediphosphonate: syntheses, structures, and magnetic properties

Author affiliations

Abstract

A systematic exploration of a series of hydrothermal reactions of 2-(4-pyridinyl)-1-hydroxyl-1,1-ethylidenediphosphonic acid (4-pyHhedpH3) with manganese, cobalt and copper salts resulted in eight new compounds, namely, Mn(4-pyHhedpH)·H2O (1), Co(4-pyHhedpH)·H2O (2), Co(4-pyHhedpH2)(C2O4)0.5(H2O)·H2O (3), Co3(4-pyHhedpH)2(C2O4)(H2O)2 (4), Cu(4-pyHhedpH2)2 (5), Cu(4-pyHhedpH) (6), CuICuII3(4-pyhedpH0.5)2 (7) and Cu3(4-pyHhedpH)2(C2O4) (8). Compounds 1 and 2 are isostructural and have ladder-like structures in which the {M2(μ-O)2} (M = Mn, Co) dimer units are connected by O–P–O bridges, whereas, compound 3 has a one-dimensional chain structure, where the Co atoms are alternatively linked by C2O42− and O–P–O bridges. Compound 4 contains one chain similar to that of compound 3, while, the chains are further connected by O–P–O bridges to generate a brick-like layer. Compound 5 has a mononuclear structure in which the central Cu ion is chelated by four O atoms from two 4-pyHhedpH ligands, giving a quadrilateral planar coordination shape. Compound 6 has chain-like structures, where {Cu2(μ-O)2} dimers are connected by edge-shared {CuO5} square pyramids to form infinite chains. In compound 7, the {Cu3(O)4} trimers are bridged by O–P–O groups to form infinite chains which are further connected by the pyridinyl groups and {O–CuI–O} units to afford layers. Compound 8 has a two-dimensional structure similar to that of compound 4. The temperature-dependent magnetic susceptibility measurements show dominant antiferromagnetic interactions in compounds 1–4 and 6–8 mediated through O–P–O and/or μ-O bridges between the metal centers. The magnetization measurements reveal that compound 2 shows field-induced magnetic transition at low temperature.

Graphical abstract: Eight novel metal diphosphonates based on 2-(4-pyridinyl)-1-hydroxyl-1,1-ethylidenediphosphonate: syntheses, structures, and magnetic properties

Back to tab navigation

Supplementary files

Article information


Submitted
01 May 2013
Accepted
24 Jul 2013
First published
07 Aug 2013

RSC Adv., 2013,3, 18430-18440
Article type
Paper

Eight novel metal diphosphonates based on 2-(4-pyridinyl)-1-hydroxyl-1,1-ethylidenediphosphonate: syntheses, structures, and magnetic properties

Y. Ma, W. Yin, W. Cai, P. Zhu, X. Tang, R. Yuan and S. Roy, RSC Adv., 2013, 3, 18430
DOI: 10.1039/C3RA43137A

Social activity

Search articles by author

Spotlight

Advertisements