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Indexed by:期刊论文

Date of Publication:2008-10-21

Journal:DALTON TRANSACTIONS

Included Journals:SCIE、EI、PubMed、Scopus

Issue:39

Page Number:5342-5349

ISSN No.:1477-9226

Abstract:The hydrothermal reaction of La(III), Cu(II) and 5-nitroisophthalic acid (H(2)NIPH) at different temperatures produced four novel coordination polymers, [LaCu(NIPH)(ONIPH)(H(2)O)(4)]center dot H(2)O (1), [La(2)Cu(NIPH)(4)(H(2)O)(6)] (2), [La(2)Cu(NIPH)(4)(H(2)O)(2)] (3) and [LaCu(NIPH)(2)(HNIPH)(H(2)O)(2)]center dot 2H(2)O (4), (HONIPH = 2-hydroxy-5-nitroisophthalate), these 2D and 3D frameworks are the first La(III)-Cu(II) heterometallic frameworks based on infinite rod-shaped molecular building blocks. In 1, a 2D layer is composed of infinite La-O-C-O-Cu rods consisting of alternating [La(2)O(14)(CO(2))(2)] and [Cu(2)O(8)] units by corner sharing. The 3D frameworks of 2-4 are constructed from different rod-shaped molecular building blocks, which are linked by NIPH ligands to form a pcu-type rod packing arrangement. Interestingly, HONIPH came from the in situ hydroxylation of H(2)NIPH in the hydrothermal reaction.