Some scientific research about (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal

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Crystal supramolecularity in 2,2?-iminodipyridinium tetrahalometallate(II) salts: Supramolecular motifs that control tetrahedral halometallate solid state structures

N+-H?Br-M and (pi)C-H?Br-M hydrogen bond synthons have been exploited in the crystallization of a series of 2,2?-iminodipyridinium(2+) dication (hereafter 2,2?-imdipyH 2), (C10H11N3)[MX4] salts (M = Co and Hg; X = Cl and Br) and 2,2?-iminodipyridinium(1+) cation (hereafter 2,2?-imdipyH), (C10H10N3) 2[MX4] salts (M = Co, Hg; X = Cl and Br). Intermolecular interactions and crystal supramolecularity adopted in these structures were analyzed and compared with reported similar structures, (C10H 11N3)[CuCl4] and (C10H 10N3)2[CoCl4]. In these salts only one structural form for the halometallate species is observed namely mononuclear tetrahedral. The crystal supramolecularity in the (2,2?-imdipyH 2)[MX4] series corresponds to three distinct structural motifs: Parallel ribbons of infinitely connected cyclic dimers of two dications and two anions found in the isomorphous salts of [CoCl4]2- and [CuCl4]2-; and cyclic dimer hearing-bone packing motif found in the isomorphous dication salts of [CoBr4]2- and [HgBr4]2-. Infinitely helical layers based on alternating ?anion?two stacked cations ?anion? two stacked cations? are found in the isomorphous salts of (2,2?-imdipyH)2[CoCl4] and (2,2?-imdipyH) 2[HgBr4].

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Reference£º
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics