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Crystal engineering with short-chained amphiphiles: decasodium octa-n-butanesulfonate di-μ-chlorido-bis[dichloridopalladate(II)] tetrahydrate, a layered inorganic–organic hybrid material
In the course of crystal-engineering experiments, crystals of the hydrated title salt, Na(10)[Pd(2)Cl(6)](C(4)H(9)SO(3))(8)·4H(2)O, were obtained from a water/2-propanol solution of sodium n-butanesulfonate and sodium tetrachloridopalladate(II). In the crystal, sodium n-butanesulfonate anions an...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6505587/ https://www.ncbi.nlm.nih.gov/pubmed/31110785 http://dx.doi.org/10.1107/S2056989019004201 |
Sumario: | In the course of crystal-engineering experiments, crystals of the hydrated title salt, Na(10)[Pd(2)Cl(6)](C(4)H(9)SO(3))(8)·4H(2)O, were obtained from a water/2-propanol solution of sodium n-butanesulfonate and sodium tetrachloridopalladate(II). In the crystal, sodium n-butanesulfonate anions and water molecules are arranged in an amphiphilic inverse bilayered cationic array represented by the formula {[Na(10)(C(4)H(9)SO(3))(8)(H(2)O)(4)](2+)}(n). Within this lamellar array: (i) a hydrophilic layer region parallel to the bc plane is established by the Na(+) cations, the H(2)O molecules (as aqua ligands in κNa,κNa′-bridging coordination mode) and the O(3)S– groups of the sulfonate ions, and (ii) hydrophobic regions are present containing all the n-butyl groups in an almost parallel orientation, with the chain direction approximately perpendicular to the aforementioned hydrophilic layer. Unexpectedly, the flat centrosymmetric [Pd(2)Cl(6)](2−) anion in the structure is placed between the butyl groups, within the hydrophobic regions, but due to its appropriate length primarily bonded to the hydrophilic ‘inorganic’ layer regions above and below the hydrophobic area via Pd—Cl(t)⋯Na- and Pd—Cl(t)⋯H—O(H)—Na-type (Cl(t) is terminal chloride) interactions. In addition to these hydrogen-bonding interactions, both aqua ligands are engaged in charge-supported S—O⋯H—O hydrogen bonds of a motif characterized by the D (4) (3)(9) graph-set descriptor within the hydrophilic region. The crystal structure of the title compound is the first reported for a metal n-butanesulfonate. |
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