Di-n-butylbis(2′,4′-difluoro-4-hydroxybiphenyl-3-carboxylato-O,O′)tin(IV)

Abstract

Key indicatorsSingle-crystal X-ray study T = 170 K Mean '(C±C) = 0.007 A Ê Disorder in main residue R factor = 0.050 wR factor = 0.148 Data-to-parameter ratio = 16.3For details of how these key indicators were automatically derived from the article, see

Bis[2,3-bis(4-chlorophenyl)propenoato-κ2O,O′]dimethyltin(IV)

“…The Sn atom lies only 0.0394 (10) A Ê from the plane formed by the two carboxylate groups and the two methyl groups lie above and below this plane. The mean SnÐC distance of 2.094 (6) A Ê and the CÐSnÐC angle of 145.77 (11) agree with the corresponding distances and angles reported earlier (Gibson et al, 1997;Parvez et al, 1997;Hans et al, 2002). The propenoate ligands are asymmetrically coordinated to the Sn atoms, with short SnÐO covalent bonds [2.116 (2) and 2.127 (2) A Ê ] and long dative bonds [2.544 (2) and 2.491 (2) A Ê ].…”

“…The propenoate ligands are asymmetrically coordinated to the Sn atoms, with short SnÐO covalent bonds [2.116 (2) and 2.127 (2) A Ê ] and long dative bonds [2.544 (2) and 2.491 (2) A Ê ]. These bond distances are very similar to the corresponding distances reported in some similar organotin compounds (Hans et al, 2002;Stocco et al, 1996;Gielen et al, 1998;Gibson et al, 1997;Parvez et al, 1997Parvez et al, , 2000Ramirez et al, 2002). The orientation of the benzene rings in the two ligands differs signi®cantly.…”

Octa-n-butylbis(μ2-4-chloro-3,5-dinitrobenzoato-κ2O:O′)bis(4-chloro-3,5-dinitrobenzoato-κO)di-μ3-oxo-tetratin(IV)

“…1). The endocyclic Sn-O distance in the central core [Sn1-O7 of 2.286 (2) Å ] and the endocyclic distance [Sn1-O1 = 2.188 (2) Å ] are quite similar to those observed in the tetrabutylbis(N-phthaloylglycinato)-distannoxane dimer (Parvez et al, 2000) and the tetrabutylbis(N-phthaloylphenylalaninato)distannoxane dimer (Hans et al, 2002). Both independent Sn atoms in (I) are in a fivecoordinate O 3 C 2 Sn distorted trigonal-bipyramidal geometry.…”

Tetrabutylbis[3-(4-methoxyphenyl)-2-phenyl-2-propenoato]distannoxane dimer

“…The structure of (I) is composed of a centrosymmetric dimer. The endocyclic SnÐO distances in the central core, Sn1/O7/Sn1 i /O7 i [symmetry code: (i) 1 À x, 1 À y, 2 À z], of 2.041 (2) and 2.182 (2) A Ê and the exocyclic distance Sn1ÐO1 of 2.249 (3) A Ê are similar to those observed in the tetrabutylbis(N,N-diethylthiocarbamoylthio)distannoxane dimer (Ng & Kumar Das, 1995a), bis[1,1,3,3-tetrabutyl-1,3-bis-(picolinato N-oxide)]distannoxane hydrate (Ng, 1998), the isomeric triphenyltin-2-(3-,4-)pyridinecarboxylate N-oxides (Ng & Kumar Das, 1995b), the tetrabutylbis(N-phthaloylglycinato)distannoxane dimer (Parvez et al, 2000) and the tetrabutylbis(N-phthaloylphenylalaninato)distannoxane dimer (Hans et al, 2002). However, the Sn1Á Á ÁO4 i interaction of 3.012 (3) A Ê in (I) is signi®cantly longer than the corresponding interaction observed in both the tetrabutylbis(N-phthaloylphenylalaninato)distannoxane dimer (Hans et al, 2002) [2.725 (3) A Ê ] and the tetrabutylbis(N-phthaloylglycinato)distannoxane dimer [2.746 (3) A Ê ; Parvez et al, 2000].…”