Two highly connected POM-based hybrids varying from 2D to 3D: The use of the isomeric ligands

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.04.025· OSTI ID:21370482

Chunjing, Zhang; Haijun, Pang; Mixia, Hu; Jia, Li ^[1]

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1. Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun 130024, Province Jilin (China)

Through employing two isomeric ligands, isonicotinic acid (HINA) and nicotinic acid (HNA), with different electron delocalization nature, two high-dimensional hybrids based on highly connected alpha-metatungstate clusters, [Na{sub 2}(H{sub 2}O){sub 8}Ag{sub 2}(HINA){sub 3}(INA)][Na(H{sub 2}O){sub 2}Ag{sub 2}(HINA){sub 4}(H{sub 2}W{sub 12}O{sub 40})].2H{sub 2}O (1) and [Na{sub 2}(H{sub 2}O){sub 4}Ag{sub 6}(HNA){sub 2}(NA){sub 2}(H{sub 2}W{sub 12}O{sub 40})].8H{sub 2}O (2), have been conventionally synthesized and structurally characterized. 1 exhibits an unusual 1D-in-2D pseudo-polyrotaxane entangled structure, namely, the 2D sheets [Na(H{sub 2}O){sub 2}Ag{sub 2}(HINA){sub 4}(H{sub 2}W{sub 12}O{sub 40})]{sub n}{sup 3n-} are penetrated by enantiomorphous meso-helical chains [Na{sub 2}(H{sub 2}O){sub 8}Ag{sub 2}(HINA){sub 3}(INA)]{sub n}{sup 3n+}. In the 2D sheets, each [H{sub 2}W{sub 12}O{sub 40}]{sup 6-} cluster is surrounded by six Ag and two Na atoms. 2 exhibits a 3D (4, 6)-net structure with (3{sup 2}6{sup 2}7{sup 2})(3{sup 2}4{sup 4}5{sup 4}6{sup 4}7)(3{sup 2}4{sup 4}6{sup 8}7) topology, in which each [H{sub 2}W{sub 12}O{sub 40}]{sup 6-} cluster is connected with ten Ag atoms. These facts indicate that the isomeric ligands play a key role in the formation of final structures. From 1 to 2, the connection number of the [H{sub 2}W{sub 12}O{sub 40}]{sup 6-} cluster changes from 8 to 10 and the dimensionality increases from 2 to 3. Moreover, 1 and 2 display photoluminescent properties in the blue range at room temperature. - Graphical abstract: Two high-dimensional and highly connected alpha-metatungstate-compounds modified by Ag{sup I}-HINA/HNA TMCs were successful obtained and the effect of isomeric organic ligands on the structures was systematically elucidated.

• OSTI ID: 21370482
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 7; Other Information: DOI: 10.1016/j.jssc.2009.04.025; PII: S0022-4596(09)00185-6; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ENANTIOMORPHS
LIGANDS
NICOTINIC ACID
PHOTOLUMINESCENCE
SHEETS
SILVER COMPLEXES
SODIUM COMPLEXES
TEMPERATURE RANGE 0273-0400 K
TOPOLOGY
TUNGSTATES
WATER
ALKALI METAL COMPLEXES
AZINES
CARBOXYLIC ACIDS
COMPLEXES
EMISSION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
ISOMERS
LUMINESCENCE
MATHEMATICS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOTON EMISSION
PYRIDINES
REFRACTORY METAL COMPOUNDS
TEMPERATURE RANGE
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
VITAMIN B GROUP
VITAMINS