Li2ADC·2H2O and Li2ADC: Two new Coordination Polymers with the Acetylenedicarboxylate Dianion (ADC2-)

Autor:	Irena Stein, Elena Riesen, Uwe Ruschewitz, Verena K. Gramm
Rok vydání:	2016
Předmět:	Aqueous solution Acetylenedicarboxylic acid 010405 organic chemistry Coordination polymer Acetylenedicarboxylate Crystal structure Triclinic crystal system 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry Orthorhombic crystal system Powder diffraction
Zdroj:	Zeitschrift für anorganische und allgemeine Chemie. 642:1350-1354
ISSN:	0044-2313
DOI:	10.1002/zaac.201600363
Popis:	Single crystals of dilithium-acetylenedicarboxylate-dihydrate, Li2ADC·2H2O (1), were isolated from a solid product formed by isothermal evaporation of an aqueous solution of LiOH und acetylenedicarboxylic acid (H2ADC). 1 crystallizes in the triclinic space group P1 with Z = 2. LiO4 tetrahedra are interconnected by ADC2– anions and water molecules to form a 3D polymeric structure. Coupled TGA and DTA measurements show that 1 loses its two water molecules above 100 °C. Heating a polycrystalline sample of 1 at 140 °C for 2 h in an argon atmosphere leads to a significant change of the powder diffraction pattern indicating the formation of the new anhydrous coordination polymer dilithium-acetylenedicarboxylate, Li2ADC (2). Its crystal structure was solved and refined from X-ray powder diffraction data. 2 crystallizes in the orthorhombic space group Fddd (Z = 8). LiO4 tetrahedra are interconnected by ADC2– anions to form a 3D polymeric structure.
Databáze:	OpenAIRE
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