title: Poly[tetrasodium(I)-tetra-mu2-bis(butane-1,4-diyldioxy)borato-mu2-1,4-butanediol].
abstract: In the title compound, [Na4(C8H16BO4)4(C4H10O2)]n, there are two coordination types for the four independent Na+ cations: two Na+ cations bond to six diolate O atoms [Na-O = 2.305 (2)-2.609 (2) A], while the other two are five-coordinate via one 1,4-butanediol [2.289 (2) and 2.349 (3) A] and four diolate O atoms [2.295 (2)-2.408 (2) A]. Corresponding to this, there are three- and four-coordinate diolate O atoms, the latter bridging Na atoms. The 1,4-butanediol molecules lie on inversion centres. The boron stereochemistry shows minor local perturbations from its usual tetrahedral state [B-O = 1.457 (4)-1.503 (4) A]. The resulting polymer packs as sheets parallel to the (10-1) plane crosslinked by the butanediol molecules. The structure was solved using data from a multiple crystal.
authors.affiliation: Industrial Research Limited, PO Box 31-310, Lower Hutt, New Zealand. g.gainsford@irl.cri.nz
authors.forename: Graeme J
authors.initials: GJ
authors.lastname: Gainsford
authors.forename: Tim
authors.initials: T
authors.lastname: Kemmitt