Self-assembly of diorganotin(iv) moieties and 2-pyrazinecarboxylic acid: syntheses, characterizations and crystal structures of monomeric, polymeric or trinuclear macrocyclic compounds

Abstract

A series of diorganotin(IV) compounds of the type [R(2)Sn(pca)Cl](3)(R = CH(3); (n)Bu; C(6)H(5); C(6)H(5)CH(2); Hpca = 2-pyrazinecarboxylic acid), R(2)Sn(pca)(2)(mH(2)O)xnH(2)O (m= 1: R = CH(3), n= 2, R =(n)Bu, n= 0; m= 0, n= 0: R =(n)Bu, C(6)H(5), C(6)H(5)CH(2)) and (Et(3)NH)(+)[R(2)Sn(pca)(2)Cl](-)xmH(2)O (m= 0: R = CH(3), (n)Bu, C(6)H(5)CH(2); m= 1: R = C(6)H(5)) have been obtained by reactions of 2-pyrazinecarboxylic acid with diorganotin(iv) dichloride in the presence of sodium ethoxide or triethylamine. All compounds were characterized by elemental, IR and NMR spectra analyses. Except for compounds, and, the others were also characterized by X-ray crystallography diffraction analyses, which revealed that compounds and were trinuclear macrocyclic structures with six-coordinate tin(IV) atoms, compounds and were monomeric structures with seven-coordinate tin(IV) atoms, compounds and were polymeric chain structures with seven-coordinate tin(IV) atoms and compounds and were stannate with seven-coordinate tin(IV) atoms.

Syntheses and crystal structures of triorganotin (IV) derivatives with 2,2′‐bipyridine‐4,4′‐dicarboxylic acid

“…Wang reported a monomer with 2,2 -biquinoline-4,4 -dicarboxylate and triphenyltin chloride [9]. In our previous work, we have also reported several novel molecular structures on it, such as two 15-membered trinuclear macrocyclic complexes with 2-pyrazinecarboxylic acid [10], and a series of triorganotin pyridinedicarboxylates with 2,5-, 3,5-, and 2,6-pyridinedicarboxylic acid [11]. To continue our research, we selected another interesting ligand, 2,2 -bipyridine-4,4 -dicarboxylic acid, on the basis of the following considerations: (a) the 2,2 -bipyridine and carboxylate functional groups of H 2 dcbp all have coordinate abilities, either singly or in unison, so several potential multiple molecular models in organotin complexes may be possess; (b) it can act not only as a hydrogen bond acceptor but also as a hydrogen bond donor, so the preparation of hybrid networks combining the strength of coordination bonding with the flexibility of hydrogen bonding is also feasible; and (c) it possesses high symmetry that may be helpful for the crystal growth of the product formed.…”

Chiral self-assembly of methyltin(IV)-naproxenates: Combining dative Sn–O bonds, secondary Sn⋯O interactions and C–H⋯O hydrogen bonding to make an inter-helical meander-shaped network and a cross-linked Z-shaped ribbon

“…In 1988, Lockhart established that the di-n-butyltin(IV) 3-thiopropionate exists in either oligomeric or monomeric form in solution and crystallizes as a cyclic hexamer [2]. Interestingly, in spite of these early findings only few organotin(IV)-macrocycles have been created [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], whereas a rich structural chemistry of stannoxane and distannoxane units containing supramolecules has been emerged [19][20][21][22][23][24][25][26][27][28][29]. Our entry in the field of organotin supramolecular chemistry began in 4 [30] and dimeric [Me 2 Sn(PhN 2 O 2 ) 2 ] 2 [31].…”

Triorganotin(IV) complexes containing multifunctional meso‐dimercaptosuccinic acid ligand: Syntheses, characterizations, and crystal structures

“…It is well known that organotin carboxylates have versatile molecular structures both in solid and in solution, such as monomers, dimers, tetramers, oligomeric ladders, hexameric drums, etc [15]. It has also been demonstrated that other structural types are formed owing to the presence of additional heteroatom sites (S, N, or O) along with a carboxylate moiety [10][11][12]16]. In our previous work, we have reported several new molecular structures of triorganotin complexes by the reaction of meso-dimercaptosuccinic acid (H 4 dmsa) and sodium ethoxide with triorganotin(IV) chloride in 1:4:4 stoichiometry [17].…”

“…Organotin complexes have attracted more and more attention in recent years, partly owing to their determinately or potentially pharmaceutical value, which have been reported several times before [1][2][3][4][5][6][7][8][9], as well as the versatile molecular structure and supramolecular architecture exhibited by these complexes [10][11][12][13][14]. It is well known that organotin carboxylates have versatile molecular structures both in solid and in solution, such as monomers, dimers, tetramers, oligomeric ladders, hexameric drums, etc [15].…”