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Title: Crystal engineering of molecular to nonmolecular metal malonates in presence of piperazine: Role of metal ions in tuning architectures
Authors: Mote, Kaustubh R
Thomas, Jency
Ramanan, Arunachalam
Keywords: Crystallization;Transition metal ions;Malonate;Piperazine;Nickel;Cobalt;Copper;Zinc
Issue Date: Aug-2018
Publisher: NISCAIR-CSIR, India
Abstract: Growth of transition metal malonate (mal) based solids from aqueous solution is investigated in the presence of piperazine (pip). Reaction under ambient conditions favored the growth of [{M(mal)2(H2O)2}{H2pip}] (M: Ni, 1; M: Co, 2), [{Cu(mal)2(H2O)2}{H2pip}].2H2O (3), and, [Zn(mal)(pip)(H2O)] (4). While 1-3 are molecular solids, 4 is a 2-D coordination polymer. In the case of cobalt, higher acidic condition favored the formation of a molecular organic-inorganic salt, [(H2pip){CoCl4}] (5). The same reaction under a different crystallization condition, i.e., lesser polar solvent and slightly higher temperature (solvothermal) led to a 2-D coordination polymer [{Co(mal)(H2O)(Hpip)}]Cl (6). A retrosynthesis approach has been employed to interpret the crystallization reaction and compare the supramolecular reactivity of aggregating metal tectons in engineering the molecules to form either a molecular solid or coordination polymer.
Page(s): 1081-1090
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.57A(08-09) [August-September 2018]

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IJCA 57A(8-9) 1081-1090.pdfMain Article1.25 MBAdobe PDFView/Open
IJCA 57A(8-9) 1081-1090_Suppl Data.pdfSupplementary Data853.92 kBAdobe PDFView/Open
IJCA 57A(8-9) 1081-1090_Suppl Data_cif.pdfSuppl Crystellographic Data 1339.13 kBAdobe PDFView/Open

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