Abstract
Abstract This paper reports two zinc phosphonates based on 4-phosphonoisophthalic acid (4-piH4) and bis(imidazole) co-ligands, namely, [Zn2(4-pi)(1,2-bix)] (1) and [Zn2(4-pi)(1,3-bix)] (2) (1,2-bix = 1,2-bis(imidazol-1-ylmethyl)benzene, 1,3-bix = 1,3-bis(imidazol-1-ylmethyl)benzene). Both show layer structures in which the inorganic tetranuclear cores of Zn4P2O6 are connected by 4-pi4−ligands. The 1,2-bix or 1,3-bix ligand binds to the Zn atoms within the tetranuclear unit or between the neighboring tetranuclear units in a cis-coordination mode, and fill in the interlayer spaces in both cases. The luminescent properties are investigated.
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