Six-co-ordinate tris(bidentate ligand) tin(IV) complexes

Denekamp, Caroline I. F.; Evans, Denis J.; Parr, Jonathan; Woollins, J. Derek

doi:10.1039/dt9930001489

Cited by 5 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4-cyano, 4-methyl, 4-nitro, 4-chloro, etc.) exist as fac/mer mixtures in solution according to 1 H and 119 Sn NMR data. , This claim, however, appears to be unfounded . Instead, only a single set of resonances was obtained in all the cases studied.…”

Section: Resultsmentioning

confidence: 99%

Rational Design and Assembly of M₂M‘₃L₆Supramolecular Clusters withC₃_hSymmetry by Exploiting Incommensurate Symmetry Numbers

et al. 2001

View full text Add to dashboard Cite

A rational approach to heterometallic cluster formation is described that uses incommensurate symmetry requirements at two different metals to control the stoichiometry of the assembly. Critical to this strategy is the proper design and synthesis of hybrid ligands with coordination sites selective toward each metal. The phosphino-catechol ligand 4-(diphenylphosphino)benzene-1,2-diol (H(2)L) possesses both hard catecholate and soft phosphine donor sites and serves such a role, using soft (C(2)-symmetric) and hard (C(3)-symmetric) metal centers. The ML(3) catecholate complexes (M = Fe(III), Ga(III), Ti(IV), Sn(IV)) have been prepared and characterized as C(3)-symmetry precursors for the stepwise assembly (aufbau) of heterometallic clusters. While the single-crystal X-ray structure of the Cs(2)[TiL(3)] salt shows a C(1) mer-configuration in the solid -state, room-temperature solution NMR data of this and related complexes are consistent with either exclusive formation of the C(3)-fac-isomer with all PPh(2) donor sites syn to each other or facile fac/mer isomerization. Coordination of these [ML(3)](2)(-) (M = Ti(IV), Sn(IV)) metallaligands via their soft P donor sites to C(2)-symmetric PdBr(2) units gives exclusively pentametallic [M(2)Pd(3)Br(6)L(6)](4)(-) (M = Ti, Sn) clusters. These clusters have been fully characterized by spectral and X-ray structural data as C(3h) mesocates with Cs(+) or protonated 1,4-diazabicyclo[2.2.2]octane (DABCO.H(+)) cations incorporated into deep molecular clefts. Exclusive formation of this type of supramolecular species is sensitive to the nature of the counterions. Alkali cations such as K(+), Rb(+), and Cs(+) give high-yield formation of the respective clusters while NEt(3)H(+) and NMe(4)(+) yield none of the desired products. Extension of the aufbau assembly to produce related [M(2)Pd(3)Cl(6)L(6)](4)(-), [M(2)Pd(3)I(6)L(6)](4)(-), and [M(2)Cr(3)(CO)(12)L(6)](4)(-) (M = Ti, Sn) clusters has also been realized. In addition to this aufbau approach, self-assembly of several of these [M(2)Pd(3)Br(6)L(6)](4)(-) clusters from all eleven components (two M(IV), three PdBr(2), six H(2)L) was also accomplished under appropriate reaction conditions.

show abstract

Section: Resultsmentioning

confidence: 99%

Rational Design and Assembly of M₂M‘₃L₆Supramolecular Clusters withC₃_hSymmetry by Exploiting Incommensurate Symmetry Numbers

et al. 2001

View full text Add to dashboard Cite

show abstract

Germanium, Tin, and Lead

Parr

2003

Comprehensive Coordination Chemistry II

View full text Add to dashboard Cite

Study on the electronic effect on coordinating donors in heptacoordinate trichlorogermanes

2007

View full text Add to dashboard Cite

Six-co-ordinate tris(bidentate ligand) tin(IV) complexes

Cited by 5 publications

References 11 publications

Rational Design and Assembly of M₂M‘₃L₆Supramolecular Clusters withC₃_hSymmetry by Exploiting Incommensurate Symmetry Numbers

Rational Design and Assembly of M₂M‘₃L₆Supramolecular Clusters withC₃_hSymmetry by Exploiting Incommensurate Symmetry Numbers

Germanium, Tin, and Lead

Study on the electronic effect on coordinating donors in heptacoordinate trichlorogermanes

Contact Info

Product

Resources

About

Six-co-ordinate tris(bidentate ligand) tin(IV) complexes

Cited by 5 publications

References 11 publications

Rational Design and Assembly of M2M‘3L6Supramolecular Clusters withC3hSymmetry by Exploiting Incommensurate Symmetry Numbers

Rational Design and Assembly of M2M‘3L6Supramolecular Clusters withC3hSymmetry by Exploiting Incommensurate Symmetry Numbers

Germanium, Tin, and Lead

Study on the electronic effect on coordinating donors in heptacoordinate trichlorogermanes

Contact Info

Product

Resources

About

Rational Design and Assembly of M₂M‘₃L₆Supramolecular Clusters withC₃_hSymmetry by Exploiting Incommensurate Symmetry Numbers

Rational Design and Assembly of M₂M‘₃L₆Supramolecular Clusters withC₃_hSymmetry by Exploiting Incommensurate Symmetry Numbers