Anion coordination complex [Cl⊂Pt(bpt)4]Cl (bpt=N,N′-bis(3-pyridylmethyl)-2-thiourea)

Li, Xin; Li, Hui; Yu, Shu‐Yan; Li, YiZhi

doi:10.1007/s11426-009-0099-7

Cited by 8 publications

(2 citation statements)

References 19 publications

(18 reference statements)

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“…Anions play numerous indispensable roles in biology, medicine, catalysis, environmental events, and so forth, and the coordination chemistry of anions has become an important aspect in supramolecular chemistry. , A large number of synthetic anion receptors have been designed by incorporating hydrogen bonding donors such as NH moieties . Urea and thiourea functionalities are promising hydrogen bonding donors because the two NH groups can form chelating hydrogen bonds with oxoanions, and (oligo)urea derivatives represent a class of excellent anion receptors by taking advantage of their cooperative multiple binding sites and shape complementarities. , The binding and separation of sulfate ions from aqueous phases by synthetic receptors is of interest yet challenging to chemists because of the high charge density and hydration energy of this anion . A few tripodal receptors have been shown to be able to encapsulate SO 4 2− ion effectively by multiple hydrogen bonds from their hydrogen-bonding donors. , …”

Section: Introductionmentioning

confidence: 99%

Full- or Half-Encapsulation of Sulfate Anion by a Tris(3-pyridylurea) Receptor: Effect of the Secondary Coordination Sphere

et al. 2009

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Self-assembly of the [Fe(DABP)(3)]SO(4) (DABP = 5,5'-diamino-2,2'-bipyridine) or [Fe(bipy)(3)]SO(4) (bipy = 2,2'-bipyridine) complex with a tripodal tris(3-pyridylurea) ligand (L) results in a layered structure that includes a sulfate anion in the cleft of one L molecule. The two compounds, [Fe(DABP)(3)][SO(4) L] x 10 H(2)O (2) and [Fe(bipy)(3)][SO(4) L] x 9 H(2)O (3), show very similar sheets formed by the anionic units [SO(4) L](2-) and cationic building blocks ([Fe(DABP)(3)](2+) or [Fe(bipy)(3)](2+)). However, there are different water clusters that link the adjacent layers in the two products, that is, water parallelograms and quasi "water cubes" in 2 versus single water molecules, water dimers, and hexamers in 3. The half-encapsulation of sulfate by a single L molecule contrasts with the previously reported full-encapsulation of the sulfate ion by two L molecules in [M(H(2)O)(6)][SO(4) L(2)] (1). This different anion encapsulation is traced to the hydrogen-acceptor properties of the pyridyl groups of L together with the hydrogen-bonding properties of the cation secondary coordination sphere for a solid-state packing optimization. In 1 the direct hydrogen bonding from the secondary coordination sphere of octahedral [M(H(2)O)(6)](2+) to L-pyridyl helps in the formation of an octahedral cation-anion coordination in the NaCl-type structure. In 2 and 3, crystal water instead of the cations has to satisfy the hydrogen-accepting demands of L. Consequently, a non-spherical and only partly water-surrounded half-encapsulated [SO(4) L](2-) anion allows for a closer approach of the [Fe(DABP)(3)](2+) or [Fe(bipy)(3)](2+) cations than the [SO(4) L(2)](2-) anion. Then, the similar cation and anion size in 2 and 3 with the Coulomb attraction confined to a two-dimensional plane leads to the formation of a hexagonal BN (or graphite) lattice. Competition experiments with different anions for compound 2 reveal that SO(4)(2-) can be selectively crystallized against NO(3)(-), OAc(-), or ClO(4)(-).

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Section: Introductionmentioning

confidence: 99%

Full- or Half-Encapsulation of Sulfate Anion by a Tris(3-pyridylurea) Receptor: Effect of the Secondary Coordination Sphere

et al. 2009

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“…Crystal engineering has the ability to control molecular organization in the solid state, leading to materials with novel structures and functions [1][2][3][4][5]. A current concern is to use molecules with geometrically well-defined cores and multiple peripheral sites that interact intermolecularly to engineer molecular crystals [6].…”

Section: Introductionmentioning

confidence: 99%

Tripod molecules build molecular networks and open-dimer capsules by weak interactions

et al. 2010

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Three tripod molecules, tris(2-methoxy-5-nitrobenzyl)phosphine oxide (1), tris(2-butoxy-3-methyl-5-nitrobenzyl)phosphine oxide (2), and tris(3-nitrobenzyl)amine (TNBA), were synthesized and crystallized. The structures of 1, 2, and their comparison (TNBA) were determined by X-ray crystallography. It is noteworthy that compound 1 interacted with adjacent molecules via - stacking and CH··· interactions to yield an open supramolecular network with the porosity P in 8.9%, whereas compound 2 gathered closely to form an open-dimer capsule by sixfold NO··· and triple CH···O interactions, which showed a rare example of a stable in, out-invertomer of phosphine inversion existing in open-dimers. A series of columns were built and arranged side by side by these weak interactions. By contrast, TNBA crystallized to form a 2D network maintained by CH···O and CH··· interactions. It seems minor changes of the chemical structure may cause large differences in the crystal structure and interactions in crystal engineering. tripod molecule, supramolecular network, open-dimer capsule, weak interaction

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Self‐Assembly and C−H⋅⋅⋅Anion Hydrogen Bonding of Palladium(II)‐based Metallacalixarenes Using Pyridyl‐ or Phenyl‐Bridged Di‐Naphthoimidazoles

Deng

et al. 2018

Chemistry An Asian Journal

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Anion coordination complex [Cl⊂Pt(bpt)4]Cl (bpt=N,N′-bis(3-pyridylmethyl)-2-thiourea)

Cited by 8 publications

References 19 publications

Full- or Half-Encapsulation of Sulfate Anion by a Tris(3-pyridylurea) Receptor: Effect of the Secondary Coordination Sphere

Full- or Half-Encapsulation of Sulfate Anion by a Tris(3-pyridylurea) Receptor: Effect of the Secondary Coordination Sphere

Tripod molecules build molecular networks and open-dimer capsules by weak interactions

Self‐Assembly and C−H⋅⋅⋅Anion Hydrogen Bonding of Palladium(II)‐based Metallacalixarenes Using Pyridyl‐ or Phenyl‐Bridged Di‐Naphthoimidazoles

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