-
[show abstract]
[hide abstract]
ABSTRACT: In the title compound, C(14)H(13)N(2) (+)·Br(-), the 1-(4-cyano-benz-yl)-4-methyl-pyridinium cation has a Λ-shaped conformation, and the dihedral angle between the benzene and pyridinium rings is 75.8 (2)°. In the crystal, two cations form a dimer through π-π inter-actions between pyridine rings [the centroid-centroid distance is 3.685 (1) Å].
Acta Crystallographica Section E Structure Reports Online 01/2009; 65(Pt 7):o1453. · 0.35 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: In the two-dimensional title coordination polymer, [Ni(C(8)H(3)BrO(4))(C(14)H(14)N(4))(H(2)O)](n), the Ni(II) atom adopts a distorted octa-hedral geometry, being ligated by three O atoms from two different 5-bromo-benzene-1,3-dicarboxyl-ate ligands, two N atoms from two 1,2-bis-(imidazol-1-ylmeth-yl)benzene ligands and one coordinated water mol-ecule. The Ni atoms are bridged by the 5-bromo-benzene-1,3-dicarboxyl-ate ligands, forming chains, which are further linked by 1,2-bis-(imidazol-1-ylmeth-yl)benzene, generating a layer structure parallel to (001).
Acta Crystallographica Section E Structure Reports Online 01/2009; 65(Pt 6):m623. · 0.35 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: Four new metal-organic frameworks [Cu2(2,2′-bipy)2(ox)(H2O)2]·(H2bptc) (1), [Cu(bptc)0.5(phen)(H2O)]·H2O (2), Co2(bptc)(bmb)1.5 (3) and [Cd2(bptc) (bmb)]·3H2O (4) (H4bptc = 3,3′,4,4′-biphenyltetracarboxylic acid, ox = oxalate, phen = 1,10-phenanthroline, 2,2′-bipy = 2,2′-bipyridine and bmb = 4,4′-bis((1H-imidazol-1-yl)methyl)biphenyl), were obtained by reactions of the corresponding metal salts with H4bptc and N-containing auxiliary ligands and their structures were determined by single-crystal X-ray diffraction. The results reveal that 1 has a 0-D structure consisting of discrete ionic entities, while 2 features a 1-D ladder structure. Additionally, there exist π-π stacking and intermolecular hydrogen-bonding interactions in 1 and 2, respectively, forming 3-D supramolecular structures. In 3-4, undulating 2-D metal-bptc layer structures are formed with two different coordination modes of bptc carboxylate groups, respectively, which are further extended by bmb into 3-D structures. Magnetic properties of 1 and 3 have been studied. The photoluminescence property of 4 has also been investigated. Moreover, nonlinear optical measurements showed that 4 displayed a second-harmonic-generation (SHG) response of 0.7 times of that for urea.
Zeitschrift für anorganische Chemie 12/2008; 635(1):156 - 164.
-
[show abstract]
[hide abstract]
ABSTRACT: AbstractA novel 3D coordination polymer Eu2(PDC)3(H2O)3 (1) has been synthesized by hydrothermal reaction of europium chloride with 3,5-pyridinedicarboxylate acid (H2PDC) under acidic condition (pH 2–3). Complex 1 is a 3D coordination polymer via 1D infinite chains built by the pyridinium moieties of the PDC2− anions. The thermal analyses and luminescent properties of 1 have also been investigated.
Graphical Abstract
A novel 3D coordination polymer Eu2(PDC)3(H2O)3 has been synthesized by hydrothermal reaction of europium chloride with 3,5-pyridinedicarboxylate acid under acidic conditions
(pH 2–3). The formation of the title complex demonstrates that pH plays an important role during the synthesis.
Journal of Inorganic and Organometallic Polymers and Materials 11/2008; 18(4):457-462. · 1.45 Impact Factor
-
Inorganica Chimica Acta. 362(13):4780-4784.
