In:
Zeitschrift für anorganische und allgemeine Chemie, Wiley, Vol. 644, No. 5 ( 2018-03-15), p. 301-307
Abstract:
Investigating the coordination chemistry of H 2 CDA (4‐oxo‐1,4‐dihydro‐2,6‐pyridinedicarboxylic acid) with rare earth salts Ln (NO 3 ) 3 under hydrothermal conditions, structure transformation phenomenon was observed. The ligand, H 2 CDA charged to its position isomer, enol type structure, H 3 CAM (4‐hydroxypyridine‐2,6‐dicarboxylic acid). Six new lanthanide(III) coordination polymers with the formulas [ Ln (CAM)(H 2 O) 3 ] n [ Ln = La ( 1 ), Pr, ( 2 )] and {[ Ln (CAM)(H 2 O) 3 ] · H 2 O} n [ Ln = Nd, ( 3 ), Sm, ( 4 ), Eu, ( 5 ), Y, ( 6 )] were synthesized and characterized. The X‐ray structure analyses show two kinds of coordination structures. The com plexes 1 and 2 and 3 – 6 are isostructural. Complexes 1 and 2 crystallize in the monoclinic C 2 / c space group, whereas 3 – 6 crystallize in the monoclinic system with space group P 2 1 / n . In the two kinds of structures, H 3 CAM displays two different coordination modes. The Sm III and Eu III complexes exhibit the corresponding characteristic luminescence in the visible region at an excitation of 376 nm.
Type of Medium:
Online Resource
ISSN:
0044-2313
,
1521-3749
DOI:
10.1002/zaac.201700385
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
201094-X
detail.hit.zdb_id:
1481139-X
Permalink