2006
DOI: 10.1021/cg058017m
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Solid-State Complexes of Calix[4]arene Dihydroxyphosphonic Acid with Bipyridyl Ligands

Abstract: The robustness of calix [4]arene dihydroxyphosphonic acid and its ubiquitous dimeric motif offers perspectives for predefined solid-state complexation with small molecules. In the current article, we describe the complex of calix[4]arene dihydroxyphosphonic acid with three different forms of bipyridyl ligand: 2,2′-bipyridine, 4,4′-bipyridine, and 1,2-bipyridylethane. A number of resemblances and differences in the interactions between the components in the complexes are pointed out. All the complexes are based… Show more

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Cited by 14 publications
(9 citation statements)
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“…Adducts of organic acids, for example, phosphonylated calixarene, with free, unprotonated 2,2′bipyridine are known in the literature. 65 Twisted conformation of base molecules changed their role in the adduct. 2,2′-Bipyridine is a connector between 2-fold axis-related hydroxyl groups (O2) from neighboring unit cells.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Adducts of organic acids, for example, phosphonylated calixarene, with free, unprotonated 2,2′bipyridine are known in the literature. 65 Twisted conformation of base molecules changed their role in the adduct. 2,2′-Bipyridine is a connector between 2-fold axis-related hydroxyl groups (O2) from neighboring unit cells.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…This is probably because 2,2′-bipyridine is a weak base with p K a equal to 4.46 vs 5.22 for pyridine. Adducts of organic acids, for example, phosphonylated calixarene, with free, unprotonated 2,2′-bipyridine are known in the literature …”
Section: Results and Discussionmentioning
confidence: 99%
“…In this context, we became interested in the reaction of phosphate monoesters with different bases to study the H-bonding interaction of the resulting ion pair between an anionic phosphate monoester and different counter cations. Although molecular phosphate monoesters mostly form polymeric structures in the solid state, we have recently reported the syntheses of several bulky aryl-substituted neutral and anionic phosphate monoesters ( 1 – 8 in Scheme ), which exhibit H-bonded dimeric molecular structures analogous to those in carboxylic acids . Through partial blockage of the H-bonding potential of the ArOP­(O)­(OH) 2 unit by using either a hydrogen-bonding acceptor solvent (such as acetone or acetonitrile) or a hydrogen-bonding donor as counter cation (such as triethylammonium), we were able to realize dimeric supramolecular structures (Scheme ).…”
Section: Introductionmentioning
confidence: 99%
“…Among the N , N ′-donors, flexible 1,2-bis(4-pyridyl)ethane ( BPE ) and 1,3-bis(4-pyridyl)propane ( BPP ) represent excellent alternatives for rigid 4,4′-bipyridine in terms of structural research. There are few known crystal complexes of calix-type hosts with these bispyridine compounds …”
Section: Introductionmentioning
confidence: 99%