Anion Template Effect and the Polymerization Degree – Diversity through Flexibility

Abstract

Two 2D (M1 and M2) and one 1D (M3) metal-organic frameworks (MOFs) have been prepared from pyridine functionalized tetradentate ligand tetrakis(nicotinoxymethyl)methane TNM with silver tetrafluoroborate, nickel chloride, and copper hexafluorophosphate. M1 manifests a previously unpresented mode of 4,4 threefold parallel interpenetration for 2D MOFs. Large channels (vdW diameter 9.4 Å) through eclipsed 2D layers of M2 were observed. While the open space percentage in the noninterpenetrated M2 was 38.0 %,

Anion-dependent crystallization of zinc complexes with the ligand 4′,5′-diaza-9′-(4,5-disubstituted-1,3-dithiol-2-ylidene) fluorene: Structures and spectroscopic properties

“…The reasons behind the interest are as follows: firstly, the role of the anions in a self-assembly process has emerged as an increasingly active theme in recent literature. [11][12][13][14] Secondly, zinc(II) can readily vary its coordination number from 4 to 8 which makes it an appealing candidate for use in deliberately designed or ''tailored'' coordination complexes. We focused our work on Zn(II) and the L system, with the anions: NO 3 H NMR, UV-vis, and fluorescence were also studied.…”