Two nickel(II) bis[(pyridin‐2‐yl)methyl]amine complexes with homophthalic and benzene‐1, 2, 4, 5‐tetracarboxylic acids. Issue 6 (6th May 2014)

• Record Type: Journal Article
• Authors: Atria, Ana María; Garland, Maria Teresa; Baggio, Ricardo
• Is Part Of: Acta crystallographica. Volume 70:Issue 6(2014:Jun.)
• Page Start: 541
• Page End: 546
• Publication Date: 2014-05-06
• Subjects: Crystallography -- Periodicals; Crystals -- Periodicals; 548.3
• DOI: 10.1107/S2053229614008134
• Languages: English
• ISSNs: 2053-2296

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Two new Ni<sup>II</sup> complexes involving the ancillary ligand bis[(pyridin‐2‐yl)methyl]amine (bpma) and two different carboxylate ligands, <italic>i.e.</italic> homophthalate [hph; systematic name: 2‐(2‐carboxylatophenyl)acetate] and benzene‐1, 2, 4, 5‐tetracarboxylate (btc), namely <italic>catena</italic>‐poly[[aqua{bis[(pyridin‐2‐yl)methyl]amine‐κ<sup>3</sup><italic>N</italic>, <italic>N</italic>′, <italic>N</italic>′′}nickel(II)]‐μ‐2‐(2‐carboxylatophenyl)aceteto‐κ<sup>2</sup><italic>O</italic>:<italic>O</italic>′], [Ni(C<sub>9</sub>H<sub>6</sub>O<sub>4</sub>)(C<sub>12</sub>H<sub>13</sub>N<sub>3</sub>)(H<sub>2</sub>O)]<sub><italic>n</italic></sub>, and (μ‐benzene‐1, 2, 4, 5‐tetracarboxylato‐κ<sup>4</sup><italic>O</italic><sup>1</sup>, <italic>O</italic><sup>2</sup>:<italic>O</italic><sup>4</sup>, <italic>O</italic><sup>5</sup>)bis(aqua{bis[(pyridin‐2‐yl)methyl]amine‐κ<sup>3</sup><italic>N</italic>, <italic>N</italic>′, <italic>N</italic>′′}nickel(II)) bis(triaqua{bis[(pyridin‐2‐yl)methyl]amine‐κ<sup>3</sup><italic>N</italic>, <italic>N</italic>′, <italic>N</italic>′′}nickel(II)) benzene‐1, 2, 4, 5‐tetracarboxylate hexahydrate, [Ni<sub>2</sub>(C<sub>10</sub>H<sub>2</sub>O<sub>8</sub>)(C<sub>12</sub>H<sub>13</sub>N<sub>3</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·[Ni(C<sub>12</sub>H<sub>13</sub>N<sub>3</sub>)(H<sub>2</sub>O)<sub>3</sub>]<sub>2</sub>(C<sub>10</sub>H<sub>2</sub>O<sub>8</sub>)·6H<sub>2</sub>O, (II), are presented. Compound (I) is a one‐dimensional polymer with hph acting as a bridging ligand and with the chains linked by weak C—H...O interactions. The structure of compound (II) is much more complex, with two independent Ni<sup>II</sup> centres having different environments, one of them as part of centrosymmetric [Ni(bpma)(H<sub>2</sub>O)]<sub>2</sub>(btc) dinuclear complexes and the other in mononuclear [Ni(bpma)(H<sub>2</sub>O)<sub>3</sub>]<sup>2+</sup> cations which (in a 2:1 ratio) provide charge balance for btc<sup>4−</sup> anions. A profuse hydrogen‐bonding scheme, where both coordinated and crystal water molecules play a crucial role, provides the supramolecular linkage of the different groups.</p> </abstract>