title: The first 3-dimensional assemblies of organotin-functionalized polyanions.
abstract: Reaction of the (CH(3))(2)Sn(2+) electrophile toward trilacunary [A-alpha-XW(9)O(34)](n-) Keggin polytungstates (X = P(V), As(V), Si(IV)) with guanidinium as templating-cation resulted in the isostructural compounds Na[C(NH(2))(3)](2)[{(CH(3))(2)Sn(H(2)O)}(3)(A-alpha-PW(9)O(34))] x 9 H(2)O (1), Na[C(NH(2))(3)](2)[{(CH(3))(2)Sn(H(2)O)}(3)(A-alpha-AsW(9)O(34))] x 8 H(2)O (2) and Na(2)[C(NH(2))(3)](2)[{(CH(3))(2)Sn(H(2)O)}(3)(A-alpha-SiW(9)O(34))] x 10 H(2)O (3). Compounds 1-3 constitute the first 3-dimensional assemblies of organotin-functionalized polyanions, as well as the first example of a dimethyltin-containing tungstosilicate in the case of 3, and they show a similar chiral architecture based on tetrahedrally-arranged {(CH(3))(2)Sn}(3)(A-alpha-XW(9)O(34)) monomeric building-blocks connected via intermolecular Sn-O=W bridges regardless of the size and/or charge of the heteroatom.
authors.affiliation: School of Engineering and Science, Jacobs University, P. O. Box 750 561, 28725, Bremen, Germany.
authors.forename: Luis Fernando
authors.initials: LF
authors.lastname: Piedra-Garza
authors.forename: Santiago
authors.initials: S
authors.lastname: Reinoso
authors.forename: Michael H
authors.initials: MH
authors.lastname: Dickman
authors.forename: Michael M
authors.initials: MM
authors.lastname: Sanguineti
authors.forename: Ulrich
authors.initials: U
authors.lastname: Kortz
mesh_terms: D019791:Guanidine / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D009947:Organotin Compounds / Q000737:chemistry*; D000071228:Polyelectrolytes; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D014414:Tungsten / Q000737:chemistry*
chemical_list: D019791:Guanidine; D009942:Organometallic Compounds; D009947:Organotin Compounds; D000071228:Polyelectrolytes; D011108:Polymers; D014414:Tungsten