Crystal structure, phase transition and thermal decomposition of a copper (II) sulfate dihydrate containing a chiral organic ammonium cation

Synthesis, crystal structures and thermal behaviour of organic–inorganic hybrids incorporating a chiral diamine

“…These MeO w distances are provided in Table 2 2.834(2) Å. These values agree with those currently observed in inorganic salts containing the organic groups used in this work [5,7,38]. One again, extended, supramolecular structures are constructed from these molecular units by hydrogen-bonding.…”

“…The Flack parameters for these compounds refined to À0.016 (15) and À0.016 (17), indicating absolute configurations. The enantiomeric structures are inverses of one another and are isostructural with a related copper phase [5].…”

“…Single crystals of [R-C 5 6 ](SO 4 ) 2 (8) were grown from solutions containing 1 mmol of the appropriate metal sulfate hydrate M II SO 4 $nH 2 O, 3 mmol of either R-2-methylpiperazine or S-2-methylpiperazine and 1 mmol of H 2 SO 4 , in 10 mL of distilled water. Initial solution pHs were between 1.5 and 3 for all reactions.…”

The Chain of Chirality Transfer as Determinant of Brain Functional Laterality. Breaking the Chirality Silence: Search for New Generation of Biomarkers; Relevance to Neurodegenerative Diseases, Cognitive Psychology, and Nutrition Science

“…The diversity of stereospecific (chiral) phenomena was observed in molecular structures including chirality recognition/sensing [95,96], chirality transfer [97], chirality/helicity induction [98][99][100][101], chirality amplification [102][103][104], chirality breaking [61,105], chirality conflict [106,107], helicity inversion [108][109][110], and chiral phase transitions XVII [111][112][113][114]116]. Progress in the studies of molecular chirality transformation is helpful in resolving three questions.…”

Layered structure of a supramolecular hybrid sulfate salts: Thermal stability and magnetic behavior

“…Organic-inorganic sulfates salts built from transition metals and amines have been mainly described in the literature as supramolecular crystal structures belonging to well-known families as alums and Tutton's salts [21][22][23]. In this context, we are interested in mixed transition metal sulfates and protonated amines with good thermal stability and which can present reversible phase transitions, for potential applications as dielectric or catalysts [24]. Our recent research activity was introducing aromaticity and/or delocalization of electrons through using aromatic amine as structuring agent in the synthesis of new hybrid sulfates.…”