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Indexed by:期刊论文

Date of Publication:2009-09-17

Journal:JOURNAL OF MOLECULAR STRUCTURE

Included Journals:SCIE、EI、Scopus

Volume:933

Issue:1-3

Page Number:86-91

ISSN No.:0022-2860

Key Words:Cadmium fragment; Anderson-type polyoxoanion; Hybrid structure; Photoluminescent property

Abstract:Two new hybrid compounds with cadmium cations/coordination complexes as linkers, (C(6)H(5)NO(2))(4)[(H(2)O)(14)Cd(3)(CrMo(6)H(6)O(24))(2)] 1 (C(6)H(5)NO(2) = pyridine-4-carboxylic acid) and H[(H(2)O)(2)(C(6)H(5)NO(2))(C(6)H(4)NO(2))Cd](2)[CrMo(6)H(6)O(24)]center dot 9H(2)O 2 (C(6)H(5)NO(2), C(6)H(4)NO(2) = pyridine-3-carboxylic acid), have been synthesized and characterized by elemental analyses. IR, TG, and single-crystal X-ray diffraction. Compound 1 crystallizes in the polar space group Pc and is made up of [CrMo(6)H(6)O(24)](3-) polyoxoanions covalently linked by cadmium cations to yield an unprecedented one-dimensional chain, which represents the first example of one-dimensional assemblies based on Anderson-type POMs and cadmium cations. Adjacent inorganic chains are further in close contact by pyridine-4-carboxylic acid glues to form three-dimensional supramolecular polar networks via strong hydrogen-bonding interactions. Compound 2 exhibits a three-dimensional supramolecular channel framework constructed from cationic cadmium-pyridine-3-carboxylic acid coordination polymer sheets pillared by Anderson-type polyoxoanions, with dissociated water molecules situated in the channels. Furthermore, both of the compounds exhibit photoluminescent properties at ambient temperature. (C) 2009 Elsevier B.V. All rights reserved.