QD-2: a novel open-framework aluminoborate with intersecting three-dimensional helical channels.

A novel open-framework aluminoborate, [CH3NH2(CH2)3NH ]-[AlB5O10] (QD-2), has been synthesized under hydrothermal conditions and characterized by IR, elemental analysis, thermogravimetric analysis, and powder and single-crystal X-ray diffractions. The compound crystallizes in the orthorhombic system, space group P2(1)2(1)2(1) (No. 19), a = 9.

Synthesis and characterization of QD-3: the first organically templated aluminoborate with 11-, 12-, and 14-ring intersecting channels.

QD-3, a novel aluminoborate (TETA) 2[Al 2B 10 O 20].0.25H 2O (TETA = triethylenetetramine), has been solvothermally synthesized and characterized by IR, thermogravimetric analysis, power X-ray diffraction, elemental analysis, and single-crystal X-ray diffraction.

Poly[aqua(mu3-benzene-1,2-dicarboxylato)bis(mu3-hydroxido)bis(mu2-isonicotinato)dierbium(III) monohydrate] and the thulium analogue.

The two isomorphous lanthanide coordination polymers, {[Ln(2)(C(6)H(4)NO(2))(2)(C(8)H(4)O(4))(OH)(2)(H(2)O)].H(2)O}(n) (Ln = Er and Tm), contain two crystallographically independent Ln ions which are both eight-coordinated by O atoms, but with quite different coordination environments. In both crystal structures, adjacent Ln atoms are bridged by mu(3)-OH groups and carboxylate groups of isonicotinate and benzene-1,2-dicarboxylate ligands, forming infinite chains in which the Er.

Antioxidant capacity and lipophilic content of seaweeds collected from the Qingdao coastline.

Lipophilic extracts from 16 species of seaweeds collected along the Qingdao coastline were screened and evaluated for their antioxidant activities (AA) using the beta-carotene-linoleate assay system. The diethyl ether soluble extracts of all selected seaweeds exhibited various degrees of antioxidative efficacy in each screen. The highest antioxidant capacities among the tested samples were observed for Rhodomela confervoides and Symphyocladia latiuscula and were comparable with that of the well-known antioxidant butylated hydroxytoluene and greater than that of propyl gallate.