A Novel Tetranuclear Organotin(IV) Carboxylate with Chain Structure: Synthesis, Crystal Structure, and Characterizations

Abstract

A new tetranuclear organotin carboxylate {[(n‐Bu2SnO)2L]2}n (complex 1) was synthesized by the reaction of di‐n‐butyltin oxide with (p‐carboxymethoxy‐phenoxy) acetic acid (LH2) and characterized by elemental analyses: IR, UV–visible, 1H, 13C, 119Sn NMR spectroscopy and single crystal X‐ray study. X‐ray crystallography diffraction data revealed that the complex 1 was polymeric fashion with a chain structure containing a ladder‐like tetranuclear organo‐oxotin cluster. In the complex 1, the ligand LH2 is coordinated to the central tin(IV) atoms via the carboxylato‐O atoms. The tetranuclear tin system is formed by the bridges through the carbonyl oxygen atom of the carboxylate moieties and making the tin atom of pentacoordinated in distorted trigonal bipyramidal geometry. Single crystal X‐ray data indicate that the complex 1 crystallized in the cubic system with the space group C2/c.

A ladder‐shaped dibutyltin(IV) carboxylate with 2‐(4‐ethylbenzoyl)benzoic acid: Synthesis, crystal structure, and luminescent property

“…This indicates the formation of the Sn–O and is consistent with the IR data. The 13 C NMR spectra of 1 show a significant downfield shift of all carbon resonance compared with the free ligand, which is on account of an electron density transfer from the ligand to the metal atoms . The single resonance at 171.2 ppm is attributed to the COO groups in the complex.…”

“…Organotin(IV) carboxylate complexes have been widely used in the industrial, agricultural, marine, and pharmaceutical fields . Dialkyltin carboxylate complexes, particularly, merit special attention owing to their excellent catalytic and anticancer activities . It is well known that most of the molecular structures of dialkyltin carboxylate complexes are n‐core (n≥4) ladder‐shaped structure, and the n‐core (n≥4) can be controlled by adjusting the metal‐to‐ligand molar ratio or the type of organic ligands .…”

“…Dialkyltin carboxylate complexes, particularly, merit special attention owing to their excellent catalytic and anticancer activities . It is well known that most of the molecular structures of dialkyltin carboxylate complexes are n‐core (n≥4) ladder‐shaped structure, and the n‐core (n≥4) can be controlled by adjusting the metal‐to‐ligand molar ratio or the type of organic ligands . In addition to the charming ladder‐shaped molecular structure, many dialkyltin carboxylate complexes can organize themselves into interesting multidimensional supramolecular structures by hydrogen bonds or π‐π interactions …”

“…However, much work has not been focused on investigating the multidimensional supramolecular structures and luminescent properties of dialkyltin carboxylate complexes . Thus in this work, the complex {[ n ‐Bu 2 Sn(L)] 2 O} 2 ( 1 ) was synthesized by the reaction of dibutyltin oxide and 2‐(4‐ethylbenzoyl)benzoic acid (HL) as Scheme in order to explore diversiform structures of organotin carboxylate for its tendency to construct multinuclear composition and multidimensional architecture . The structure of 1 has been fully characterized by X‐ray crystallography diffraction in association with spectroscopic and physicochemical methods.…”

“…[3][4][5][6] It is well known that most of the molecular structures of dialkyltin carboxylate complexes are ncore (n≥4) ladder-shaped structure, and the n-core (n≥4) can be controlled by adjusting the metal-to-ligand molar ratio or the type of organic ligands. [5,[7][8][9][10] In addition to the charming ladder-shaped molecular structure, many dialkyltin carboxylate complexes can organize themselves into interesting multidimensional supramolecular structures by hydrogen bonds or π-π interactions. [9,[11][12][13] However, much work has not been focused on investigating the multidimensional supramolecular structures and luminescent properties of dialkyltin carboxylate complexes.…”