Varying Structure‐Directing Anions in Uranyl Ion Complexes with Ni(2, 2′ : 6′, 2′′‐terpyridine‐4′‐carboxylate)2. Issue 13 (12th April 2022)

• Record Type: Journal Article
• Authors: Thuéry, Pierre; Harrowfield, Jack
• Is Part Of: European journal of inorganic chemistry. Volume 2022:Issue 13(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-04-12
• Subjects: Carboxylic acids -- Metal-organic networks -- Structure elucidation -- Terpyridine ligands -- Uranium; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.202200011
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: 2, 2′ : 6′, 2"‐Terpyridine‐4′‐carboxylic acid (tpycH) reacts with uranyl cations under solvo‐hydrothermal conditions to give [UO2 (tpyc)2 ] ⋅ 2H2 O (1 ), a monoperiodic polymer different from that previously reported. In the additional presence of Ni II cations, the Ni(tpyc)2 "expanded ligand" is formed and the structure of its complexes with the uranyl cation depends on the additional anions present. [(UO2 )2 F4 (H2 O)2 Ni(tpyc)2 ] ⋅ 2H2 O (2 ) and [UO2 (mds)(H2 O)Ni(tpyc)2 ] (3 ), where mds 2− is methanedisulfonate, are monoperiodic polymers in which the fluoride anions are bridging and the mds 2− anions chelating. [(UO2 )4 (NO3 )2 (H2 O)4 Ni5 (tpyc)10 ](CF3 SO3 )4 (NO3 )2 ⋅ 7H2 O (4 ) crystallizes as a wide and nearly planar monoperiodic ribbon. [(UO2 )2 (NO3 )2 (chdc)Ni(tpyc)2 ] ⋅ chdcH2 ⋅ 2CH3 CN (5 ), where chdc 2− is trans ‐1, 4‐cyclohexanedicarboxylate, is a monoperiodic chain including both bridging Ni(tpyc)2 and chdc 2− ligands, the chains being further assembled into layers through hydrogen bonding to bridging chdcH2 molecules. Finally, [UO2 Ni2 (tpyc)4 ](I3 )2 (6 ) crystallizes as a diperiodic network with sql topology. These results point to the possibility of modulating the structure of cationic uranyl ion complexes with Ni(tpyc)2 through addition of a wide range of bonding or non‐bonding anions. Abstract : Mono‐ or diperiodic coordination polymers with different geometries can be generated by reaction of uranyl and nickel(II) ions with 2, 2′ : 6′, 2"‐terpyridine‐4′‐carboxylate through variation of the accompanying anions.