Synthesis and structural characterization of bis(μ2-aqua)tetrakis(aqua)dilithium(I) bis(4-nitrobenzoate)

被引：0

作者：

Srinivasan, Bikshandarkoil R. ^{[1
]}

Shetgaonkar, Santosh Y. ^{[1
]}

Dhavskar, Kiran T. ^{[1
]}

Sundar, Jeyaperumal Kalyana ^{[2
]}

Natarajan, Subramanian ^{[2
]}

机构：

[1] Goa Univ, Dept Chem, Panaji 403206, Goa, India

[2] Madurai Kamaraj Univ, Sch Phys, Madurai 625021, Tamil Nadu, India

来源：

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY | 2012年 / 51卷 / 04期

关键词：

Coordination chemistry; Lithium; Sodium; Nitrobenzoates; Supramolecular chains; CRYSTAL-STRUCTURES; STACKING INTERACTIONS; MOLECULAR-STRUCTURE; COORDINATION MODES; PARA-NITROBENZOATE; SOLID-STATE; METAL-IONS; COMPLEXES; ACID; 4-NITROBENZOATE;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reaction of alkali metal carbonates M2CO3 (M = Li or Na) with 4-nitrobenzoic acid (4-nbaH) results in the formation of [(H2O)(4)Li-2(mu-H2O)(2)](4-nba)(2) (4-nba = 4-nitrobenzoate) (1) and [Na(4-nba)(H2O)(3)] (2). Compounds (1) and (2) have been characterized by analytical, spectral and thermal data. The structure of (1) consists of bis(mu(2)-aqua)tetrakis(aqua)dilithium(I) dication situated on an inversion centre and a free 4-nba anion. In compound (2), one of the two independent 4-nba functions as a mu(2)-bridging bidentate ligand, bridging the two unique Na(I) ions via the oxygen atoms of the nitro functionality. Hydrogen bonding of coordinated water ligands in a dinuclear lithium cation with coordinated water molecules in an adjacent unit leads to the formation of a supramolecular chain of [(H2O)(4)Li-2(mu-H2O)(2)](2+) cations. The cationic chain is further H-bonded to 4-nba anions resulting in alternating layers of [(H2O)(4)Li-2(mu-H2O)(2)](2+) cations and 4-nba anions. Compounds (1) and (2) exhibit enhanced fluorescence emission. A study of the known s-block metal compounds containing 4-nba and coordinated water ligands reveals that the coordination number of the central metal varies from four in Li to nine in Ba.

引用

页码：564 / 570

页数：7

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