Repozytorium
Wyszukaj
Kolekcje
Inne
Synthesis and characterisation of coordination polymers of CuII and ZnII with 1,3-bis(1,2,3,4-tetrazol-2-yl)propane - rotational freedom of the donor group favours structural diversification.
Autorzy
Rok wydania
2004
Czasopismo
European Journal of Inorganic Chemistry
Strony
3688-3695
DOI
10.1002/ejic.200400171
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The novel bidentate ligand 1,3-bis(1,2,3,4-tetrazol-2-yl)propane (pbtz), which possesses a flexible spacer, was synthesised in order to investigate the influence of the flexibility of ligand molecules on the architecture of coordination polymers. For that purpose the reactions between pbtz and M(ClO4)2·6H2O salts (M = CuII and ZnII) were performed. The complexes [{Cu(pbtz)3}(ClO4)2]∞ and [{Zn(pbtz)3}(ClO4)2·2EtOH]∞ were characterised by IR and UV/Vis spectroscopy and their crystal structures were determined by single-crystal X-ray diffraction measurements. In both compounds the pbtz ligand molecules act as N4,N4′ connectors bridging the central atoms, and the 2-substituted tetrazole rings coordinate in a monodentate fashion to the central atoms forming M(tetrazole)6 cores. [{Cu(pbtz)3}(ClO4)2]∞ was isolated as a 1D coordination polymer. The copper(II) ions are triply bridged by ligand molecules, leading to the formation of infinite 1D chains. A highly unusual manner of bridging, with the tethering of two neighbouring central atoms by the same kind of ligand molecules, although possessing different conformations, is observed. In [{Zn(pbtz)3}(ClO4)2·2EtOH]∞ the six-coordinate zinc(II) ions, which are bridged by single ligand molecules, serve as topological nodes, leading to the formation of a 3D α-polonium-type network. The crystal structure of the ZnII complex contains only one such net solvated by ethanol molecules. A conformational analysis of the ligand molecules in both compounds demonstrates that the flexibility of the pbtz and the ability of the tetrazole rings in particular to adopt various, relative orientations is responsible for the diversity of the architectures of the obtained complexes.
Adres publiczny
https://doi.org/10.1002/ejic.200400171
Strona internetowa wydawcy
Podobne publikacje
Synthesis and structural characterisation of copper(II) 15-metallacrown-5 complexes with PbII, HgII, AgI, NaI and YIII central metal ions.
Seda Sabry H., Janczak Jan, Lisowski Jerzy
Direct synthesis of linear trinuclear M2II MnII complexes with acetate and N—N donor ligands.
Nahorna Oksana V., Makhankova Valeriya G., Kokozay Vladimir N., Omelchenko Irina V., Dyakonenko Viktoriya V., Shishkin Oleg V., Jezierska Julia
Impact of α-hydroxymethylserine (HmS) residue on the binding ability of histydyl residue in the HmS-His dipeptide towards CuII, NiII and ZnII .
Młynarz Piotr, Kowalik-Jankowska Teresa, Stasiak M., Leplawy Mirosław T., Kozłowski Henryk