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Hydrothermal Approach for Reticular Synthesis of Coordination Assemblies with Dicarboxylatotetramethyldistannoxanes as the Secondary Building Units
Author(s) -
Shankar Ravi,
Dubey Archishmati
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000657
Subject(s) - chemistry , supramolecular chemistry , hydrothermal synthesis , hydrothermal circulation , chloride , crystallography , crystallinity , solvent , coordination complex , topology (electrical circuits) , stereochemistry , crystal structure , polymer chemistry , organic chemistry , chemical engineering , metal , mathematics , combinatorics , engineering
Hydrothermal reaction of trimethyltin chloride with 1,2,4,5‐benzenetetracarboxylic acid (H 4 L 1 ), 2,3‐pyridinedicarboxylic acid (H 2 L 2 ) or 1,4,5,8‐naphthalenetetracarboxylic acid 4,5‐anhydride (H 2 L 3 ) under optimized pH (5–6) and temperature (130 °C) results in the isolation of new dicarboxylatotetramethyldistannoxane‐based two‐/three‐dimensional coordination assemblies, [{Me 2 Sn(L 1 ) 0.25 } 2 O] ( 1, 2 as supramolecular isomers), [{Me 2 Sn(L 2 ) 0.5 } 2 O] ( 3 ) and [{Me 2 Sn(L 3 ) 0.5 } 2 O] ( 4 ). The reaction in each case proceeds with selective cleavage of Sn–C bond. Analogous reaction of trimethyltin chloride with H 4 L 1 at 100 °C affords [Me 3 Sn(L 1 ) 0.25 ] ( 5 ). The supramolecular coordination isomers 1 and 2 with cds and lvt network topologies, respectively are the first representatives among the distannoxane family; the latter confers large solvent accessible voids of 37 % per unit cell. The formation of ladder distannoxane, [{Me 2 Sn(O 2 C)} 2 O] 2 as a common structural motif in 1 , 3 and 4 is a manifestation of a predefined geometry of the inorganic secondary building unit (SBU) and follows the benchmark of reticular chemistry approach. The coordination assembly, 5 adopts an eight‐connected uninodal net that belongs to bcu topology. These are thermally stable up to 250–400 °C and retain their crystallinity even after exposure to hydrothermal treatment for 24 h.