Adduct formation between diphenyltin dichloride and 2-phenyl-1,3-dithiane trans-1-trans-3-dioxide: preparation, spectroscopy, crystal and molecular structure of Ph2SnCl2.CH2(CH2)2SOCH(Ph)SO

Abstract

Um novo aduto pentacoordenado de Sn (IV) foi preparado a partir de dicloreto de difenilestanho (IV) e do dissulfóxido 2-fenil-1,3-ditiano trans-1,trans-3-dióxido. O estudo espectroscópico e por difração de raios-X mostrou ser o novo composto um exemplo raro de aduto pentacoordenado 1:1 entre uma espécie organometálica de Sn (IV) e um ligante neutro. Apesar de ser difuncional, o ligante apresenta-se monodentado, em virtude de sua geometria peculiar. Ademais, o aduto não mostra evidência de interação intermolecular forte, formando moléculas discretas.A new pentacoordinate Sn (IV) adduct was prepared from diphenyltin (IV) dichloride and the disulphoxide 2-phenyl-1,3-dithiane trans-1, trans-3-dioxide. Spectroscopic and X-ray diffraction studies showed the new compound to be a rare example of a pentacoordinate 1:1 adduct between an organometallic Sn (IV) species and a neutral ligand. In spite of being difunctional, the ligand is monodentate as a result of its peculiar geometry. Moreover, the adduct does not show any evidence of strong intermolecular interactions, forming discrete molecules.

Different coordination modes for disulfoxides towards diorganotin(IV) dichlorides. X-ray crystal structures of 1,2-cis-bis-(phenylsulfinyl)ethene (rac-,cis-cbpse) and adducts [{Ph2SnCl2(meso-bpse)}n] and [{n-Bu2SnCl2(pdtd)}2]

“…The reaction between Ph 2 SnCl 2 and the disulfoxide pdtd in 1:1 molar ratio affords a monomeric 16 adduct containing a five-coordinate tin(IV) centre, while a similar reaction with n-Bu 2 SnCl 2 affords dimeric species in which the tin(IV) atoms are six-coordinate. Surprisingly, the characterization of the adduct [{Ph 2 SnCl 2 (rac-,cis-cbpse)} x ] as being a dimeric or a polymeric species was not possible using microanalysis and spectroscopic methods such as IR, NMR and 119 Sn Mössbauer.…”

“…Usually, most 1:1 adducts of diorganotin(IV) dihalides with disulfoxides form polymeric alternating chains[19][20][21] containing six-coordinate tin(IV), but 1:1 five-coordinate adducts are rare. In view of this, it is interesting to compare our results with literature data for the five-coordinate adduct [Ph 2 SnCl 2 (pdtd)] 16. The trigonal bipyramidal structure of the monomer [Ph 2 SnCl 2 (pdtd)] shows two nearly identical equatorial bond distances Sn-C [2.11(5); 2.122(5) Å] and different axial Sn-Cl [2.455(1) Å] and equatorial Sn-Cl [2.346(2) Å] bond lengths, as…”

Solid state study of sulfoxide adducts of (2-amidoethyl-C,O)trihalostannanes: Supramolecular networks constructed from hydrogen-bonds involving the amido units

“…Even the 2.483(3) Å bond length is noticeably longer than the others listed in Table 2, thereby indicating that the 2:2 complex is indeed a weakly held one. It is also noted how short the reported free S-O bond length is in the Ph 2 SnCl 2 complex [28], see Table 2.…”

“…The bis-sulfoxide ligand, 2-phenyl-1,3-dithiane-1,3-dioxide, is potentially a bridging ligand, but in 7 it only acts as a monodentate ligand with only one oxygen atom bonded to tin while the free oxygen atom functions as acceptor for an intermolecular NeH$$O hydrogen bond. The bis-sulfoxide ligand, 2-phenyl-1,3-dithiane-1,3-dioxide, has been found to act as a monodenate ligand, just as in 7 but without strong hydrogen bonding, in the 1:1 complex with Ph 2 SnCl 2 [28]. This complex possesses a pentacoordinate tin centre in a distorted trigonal bipyramidal array.…”

A nova química do estanho

“…No caso de substância desse tipo que constituem adutos entre um composto tetracoordenado de estanho e um ligante neutro, os exemplos são raros na literatura. Um desses exemplos, é o do aduto obtido pela reação de Ph 2 SnCl 2 , e o dissulfóxido 2-fenil-1,3-ditianotrans-1, trans-3-dióxido, [Ph 2 SnCl 2 .CH 2 (CH 2 ) 2 SOCH(Ph)SO] , cuja estrutura é mostrada na figura 3 28 . A figura 3 mostra que o dissulfóxido só se complexa por uma das funções SO, fomando um aduto de estanho pentacoordenado, de geometria bipiramidal trigonal (BPT).…”