Heterometallic Sr<sup>II</sup>‐M<sup>II</sup> (M=Co, Ni, Zn and Cu) Coordination Polymers: Synthesis, Temperature‐Dependent Structural Transformation, and Luminescent and Magnetic Properties

Chen, Yanmei; Gao, Qian; Chen, Wenqian; Gao, Dandan; Li, Yahong; Liu, Wei; Li, Wu

doi:10.1002/asia.201403025

Cited by 21 publications

(9 citation statements)

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“…The metal cation has a distorted tetrahedral coordination geometry provided by two O and two N atoms. The Co-O distances [Co1-O1 = 1.8844 (19), Co1-O2 = 1.8882 (19), Co1-N1 = 1.980 (2), Co1-N2 = 1.984 (2) Å ] agree well with the values observed in related structures (Adam et al, 1997;Chen et al, 2014Chen et al, , 2015. Table 1 Hydrogen-bond geometry (Å , ).…”

Section: Structure Descriptionsupporting

confidence: 76%

Bis{3,5-di-tert-butyl-N-[(4-dimethylamino)phenyl]salicylaldiminato}cobalt(II)

Rani¹,

Mitu

Chakkaravarthi

et al. 2017

IUCr Data

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In the title complex [systematic name: bis(2,4-di-tert-butyl-6-{N-[4-(dimethylamino)phenyl]carboximidoyl}phenolato)cobalt(II)], [Co(C 23 H 31 N 2 O) 2 ], the cobalt(II) atom is coordinated by pairs of O and N atoms in a distorted tetrahedral coordination geometry. The dihedral angles formed by the aromatic rings of the same ligand are 51. 99 (11) and 36.58 (9) . The molecular conformation features weak intramolecular C-HÁ Á ÁO hydrogen bonds. In the crystal, inversion-related pairs of complex molecules are linked into dimers by weak C-HÁ Á Á interactions. The methyl C atoms of tert-butyl groups have rotational disorder, with site occupancies of 0.647 (7) and 0.617 (6) for the major components and 0.353 (7) and 0.383 (6) for the minor components. One of the methyl C atoms of the dimethylamino groups is also disordered over two orientations, with an occupancy ratio of 0.75 (4):0.25 (4). Structure descriptionMetal complexes of N-and O-chelating ligands have attracted considerable attention because of their interesting physicochemical properties and pronounced biological activities. The N and O atoms play a key role in the coordination of metals at the active sites of numerous metallobimolecules (Nair et al., 2006). Schiff base-cobalt(II) metal complexes are constantly used in numerous applications varying from catalysis to pharmaceuticals (Holla et al., 2003). We herein report the synthesis and the structure of the title compound (Fig. 1) Keywords: crystal structure; distorted tetrahedral geometry; cobalt(II) complex. CCDC reference: 1542611Structural data: full structural data are available from iucrdata.iucr.org data reportsThe dihedral angle between the aromatic rings C1-C6 and C24-C29 is 85.85 (15) while the C16-C21 ring makes a dihedral angle of 55.59 (17) with the C39-C44 ring. The molecular conformation is stabilized by weak C-HÁ Á ÁO hydrogen bonds (Table 1). The crystal structure exhibits dimeric units formed by weak C-HÁ Á Á interactions (Table 1) occurring between inversion-related complex molecules.. Synthesis and crystallizationMethanolic solutions of the Schiff base (1 mmol, 10 ml) and Co(AcO) 2 ÁH 2 O (0.5 mmol; 10 ml) were mixed thoroughly and boiled under reflux for 4-6 h, and then cooled to room temperature. The resulting precipitate was filtered, washed in ice-cold ethanol and dried in vacuo. X-ray quality single crystals were grown by layering a CHCl 3 (3 ml) solution of the compound with CH 3 CN (5 ml). RefinementCrystal data, data collection and structure refinement details are summarized in Table 2. The methyl C atoms of the tertbutyl groups exhibit rotational disorder, with site occupancies of 0.647 (7) (C12-C14) and 0.617 (6) (C36-C38) for the major components. One methyl C atom of the dimethylamino groups is disordered over two orientations with site occupancies of 0.75 (4) and 0.25 (4) for the major (C46A) and minor (C46) components, respectively. The anisotropic displacement parameters of the disordered C atoms were restrained by SIMU instructions within 0.001 standard deviations. D...

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Section: Structure Descriptionsupporting

confidence: 76%

Bis{3,5-di-tert-butyl-N-[(4-dimethylamino)phenyl]salicylaldiminato}cobalt(II)

Rani¹,

Mitu

Chakkaravarthi

et al. 2017

IUCr Data

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“…For similar heterometallic complexes, see: Chen et al (2014Chen et al ( , 2015; Gil de Muro et al (1999); Li et al (1989); Mege-Revil & Price (2013); Zasurskaya et al (2000Zasurskaya et al ( , 2001Zasurskaya et al ( , 2006; Zhang (1993); Zhang et al (1992…”

Section: Related Literaturementioning

confidence: 99%

“…It coordinates to alkaline earth metals by using the oxygen atoms to form 'complex-ligands′, and the 'complex-ligands′ then bind with other metal ions to generate heterometallic coordination polymers. In our previous work, two heterometallic complexes containing Co II and Sr II ions were reported (Chen et al, 2015;Chen et al, 2014). As a continuation of our previous work, in this paper a new Co-Sr-pydc complex is reported.…”

Section: S1 Introductionmentioning

confidence: 95%

Crystal structure of poly[[hexaqua-1κ⁴O,2κ²O-bis(μ₃-pyridine-2,4-dicarboxylato-1κO²:2κ²N,O^2′;1′κO⁴)cobalt(II)strontium(II)] dihydrate]

Yu¹,

Jiang²,

Chen³

2015

Acta Cryst E

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In the title polymeric complex, {[CoSr(C7H3NO4)2(H2O)6]·2H2O}n, the CoII ion, which is situated on a crystallographic centre of inversion, is six-coordinated by two O atoms and two N atoms from two pyridine-2,4-dicarboxylate (pydc2−) ligands and two terminal water molecules in a slightly distorted octahedral geometry, to form a trans-[Co(pydc)2(H2O)2]2− unit. The SrII ion, situated on a C 2 axis, is coordinated by four O atoms from four pydc2− ligands and four water molecules. The coordination geometry of the SrII atom can be best described as a distorted dodecahedron. Each SrII ion bridges four [Co(pydc)2(H2O)2]2− units by four COO− groups of four pydc2− ligands to form a three-dimensional network structure. Two additional solvent water molecules are observed in the crystal structure and are connected to the three-dimensional coordination polymer by O—H⋯O hydrogen bonds. Further intra- and intermolecular O—H⋯O hydrogen bonds consolidate the overall structure.

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“…The carboxylate function can be bound either to a single metal center in a monodentate, iso-bidentate, or anisobidentate mode or to two or multiple metal ions through diverse bridging modes. 5,7,8,29,30 The coordination mode of the carboxylate group is an important feature, since it influences the angle comprising the coordinating functions in the ligand. The geometric features given for the di-and trinuclear fragments in Scheme 1 illustrate that 2,x-and 3,ypyridinedicarboxylate ligands (x = 3−6, y = 4 and 5) are interesting tectons for the generation of a large variety of zerodimensional (0D), 1D, 2D, or 3D coordination assemblies.…”

Section: Introductionmentioning

confidence: 99%

Pyridinedicarboxylic Acids as Versatile Building Blocks for Coordination-Driven Self-Assembly: Solvent-Induced Macrocycle and Coordination Polymer Formation upon Combination of 2,5-Pyridinedicarboxylate with Diorganotin Moieties

Vasquez‐Ríos

Rojas-León

Montes-Tolentino

et al. 2018

Crystal Growth & Design

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Ligands derived from 2,x- and 3,y-pyridinedicarboxylic acid (x = 3–6; y = 4–5) are widely used building blocks for the formation of metal-coordination polymers (MCPs), as they show a large variety of bridging modes and angles. Metal complexation occurs either only with the carboxylate groups or through N,O-chelate ring formation. In this contribution, the supramolecular chemistry and solvatomorphism of diorganotin complexes with 2,5-pyridinedicarboxylate (25pdc) formed in the presence of a series of coordinating and noncoordinating solvents were explored in detail. Five novel diorganotin 25pdc’s of composition [Me2Sn(25pdc)(py)]3·3.04C5H5N·1.86H2O (1), {[Me2Sn(25pdc)]·[Me2Sn(25pdc)(H2O)]} n 2nC7H8O (2), {[nBu2Sn(25pdc)]4} n ·4nC6H5NO2 (3), [nBu2Sn(25pdc)(gly)] n (4), and {[nBu2Sn·(25pdc)]3} n ·nCHCl3 (5) were achieved and analyzed in the context of previously reported tri- and diorganotin complexes with the same ligand. The comparative study revealed that upon coordination to diorganotin species the ligand exhibits N,O-chelate ring formation with the carboxylate group in the 2-position and bridging to other tin atoms primarily by the 5-carboxylate group, giving macrocyclic, one-, two-, or three-dimensional MCPs. On the contrary, triorganotin moieties are mostly bound only by the ligand carboxylate groups without N→Sn binding. The assemblies of diorganotin 25pdc’s mostly contain trinuclear or tetranuclear macrocycles with a large predominance of the generally uncommon [3 + 3] metal–organic aggregates. For the trinuclear macrocycles, different configurations having 12-, 18-, 21-, or 27-membered rings were encountered. The metal atoms in diorganotin 25pdc’s prefer pentagonal-bipyramidal environments, which are achieved through coordination by solvent molecules (H2O, DMSO, py) or intermolecular O→Sn bond formation. In solution, di-n-butyltin 25pdc exhibits supramolecular isomerism, giving a tetrameric aggregate in the noncoordinating solvent chloroform and a trimeric species in the presence of coordinating solvents, such as DMSO, pyridine, or methanol, due to solvent→Sn bond formation.

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Heterometallic Sr^II‐M^II (M=Co, Ni, Zn and Cu) Coordination Polymers: Synthesis, Temperature‐Dependent Structural Transformation, and Luminescent and Magnetic Properties

Cited by 21 publications

References 50 publications

Bis{3,5-di-tert-butyl-N-[(4-dimethylamino)phenyl]salicylaldiminato}cobalt(II)

Bis{3,5-di-tert-butyl-N-[(4-dimethylamino)phenyl]salicylaldiminato}cobalt(II)

Crystal structure of poly[[hexaqua-1κ⁴O,2κ²O-bis(μ₃-pyridine-2,4-dicarboxylato-1κO²:2κ²N,O^2′;1′κO⁴)cobalt(II)strontium(II)] dihydrate]

Pyridinedicarboxylic Acids as Versatile Building Blocks for Coordination-Driven Self-Assembly: Solvent-Induced Macrocycle and Coordination Polymer Formation upon Combination of 2,5-Pyridinedicarboxylate with Diorganotin Moieties

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Heterometallic SrII‐MII (M=Co, Ni, Zn and Cu) Coordination Polymers: Synthesis, Temperature‐Dependent Structural Transformation, and Luminescent and Magnetic Properties

Cited by 21 publications

References 50 publications

Bis{3,5-di-tert-butyl-N-[(4-dimethylamino)phenyl]salicylaldiminato}cobalt(II)

Bis{3,5-di-tert-butyl-N-[(4-dimethylamino)phenyl]salicylaldiminato}cobalt(II)

Crystal structure of poly[[hexaqua-1κ4O,2κ2O-bis(μ3-pyridine-2,4-dicarboxylato-1κO2:2κ2N,O2′;1′κO4)cobalt(II)strontium(II)] dihydrate]

Pyridinedicarboxylic Acids as Versatile Building Blocks for Coordination-Driven Self-Assembly: Solvent-Induced Macrocycle and Coordination Polymer Formation upon Combination of 2,5-Pyridinedicarboxylate with Diorganotin Moieties

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Heterometallic Sr^II‐M^II (M=Co, Ni, Zn and Cu) Coordination Polymers: Synthesis, Temperature‐Dependent Structural Transformation, and Luminescent and Magnetic Properties

Crystal structure of poly[[hexaqua-1κ⁴O,2κ²O-bis(μ₃-pyridine-2,4-dicarboxylato-1κO²:2κ²N,O^2′;1′κO⁴)cobalt(II)strontium(II)] dihydrate]