title: Transition Metal Complexes of p-Sulfonatocalix[5]arene.
abstract: The X-ray crystal structure of the p-sulfonatocalix[5]arene(5)(-) anion (1b) in the form of the dimeric hydrate Na(10)[p-sulfonatocalix[5]arene](2).33.5H(2)O (2) is reported. The reactions of 1b with a number of transition metal salts to form transition metal bridged bis(calixarene) inclusion complexes have also been investigated. The X-ray crystal structure of the "Co(H(2)O)(4)(2+)" bridged species Na(8)[Co(H(2)O)(4)(p-sulfonatocalix[5]arene)(2)].2CH(3)C(O)N(CH(3))(2).37H(2)O (3) which incorporates a "supercavity" large enough to encompass 2 N,N-dimethylacetamide (dma) guest molecules as well as ca. 15 water molecules and Na(+) ions is reported. Crystal data are as follows: for 2, monoclinic space group P2(1)/c, Z = 4, a = 22.0644(4), b = 19.1180(3), c = 27.7834(4) Å, beta = 91.780(1), V = 11714.1(5) Å(3); complex 3, orthorhombic space group Pnma, Z = 4, a = 22.2271(5), b = 30.1693(6), c = 18.8503(4) Å, V = 12640.6(5) Å(3).
authors.affiliation: Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115.
authors.forename: Carl P.
authors.initials: CP
authors.lastname: Johnson
authors.forename: Jerry L.
authors.initials: JL
authors.lastname: Atwood
authors.forename: Jonathan W.
authors.initials: JW
authors.lastname: Steed
authors.forename: Cary B.
authors.initials: CB
authors.lastname: Bauer
authors.forename: Robin D.
authors.initials: RD
authors.lastname: Rogers