Media type: E-Article Title: Synthesis, characterization of an unusual crystalline material with tartrate Contributor: Gu, Yongbing; Yang, Minghua imprint: Wiley, 2008 Published in: Crystal Research and Technology Language: English DOI: 10.1002/crat.200800232 ISSN: 0232-1300; 1521-4079 Keywords: Condensed Matter Physics ; General Materials Science ; General Chemistry Origination: Footnote: Description: <jats:title>Abstract</jats:title><jats:p>An exploration of the cobalt‐tartrate system under hydrothermal conditions, has led to the isolation of crystalline framework {Co<jats:sub>2</jats:sub>(H<jats:sub>2</jats:sub>tar)<jats:sub>2</jats:sub>]·2H<jats:sub>2</jats:sub>O}<jats:sub>n</jats:sub> (<jats:bold>1</jats:bold>) (H<jats:sub>2</jats:sub>tar = tartrate dianion). Single‐crystal X‐ray analyses reveal that it crystallizes in the orthorhombic space group P2<jats:sub>1</jats:sub>2<jats:sub>1</jats:sub>2. <jats:italic>a</jats:italic> = 11.0924(11) Å,<jats:italic> b</jats:italic> = 7.8517(8) Å,<jats:italic> c</jats:italic> = 9.0171(9) Å, β = 90°. A dinuclear Co<jats:sup>II</jats:sup> unit is formed <jats:italic>via</jats:italic> two different coordinated tartrate molecules. Further these units are united together through two bridging carboxylate groups of hexa‐coordinated H<jats:sub>2</jats:sub>tar ligands to form a 2D grid layer, which exhibits a typical (6,3) topological network. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</jats:p>