The title compound {systematic name: bis[1,4(η(5))-cyclo-penta-dien-yl]hexa-kis(μ-diethyl phosphito)-1:2κ(6)P:O;3:4κ(6)O:P-μ-ox-alato-2:3κ(4)O(1),O(2):O(1'),O(2')-dioxido-2κO,3κO-1,4-dicobalt(III)-2,3-divanadium(IV)}, [Co(2)V(2)(C(5)H(5))(2)(C(2)O(4))(C(4)H(10)O(3)P)(6)O(2)], is an oxalate-bridged dinuclear complex of oxovanadium(IV). The geometric center of the dimer lies on an inversion cente...

Glass reinforced thermosetting composite materials are now widely usUUed in building and construction applications. However, the adoption of Boron and Kevlar based composite materials in this industry has been very slow, and the main reasons are lack of previous experiences to assess the durability of such composite products and understanding of their properties by designers. In order to fill t...

In the title compound, [Cu(C(5)HF(6)O(2))(2)(C(3)H(4)N(2)Se)(2)], the Cu(II) atom (site symmetry ) is coordinated by two O,O'-bidentate 1,1,1,5,5,5-hexa-fluoro-2,4-penta-nedione (hp) ligands and two 4-methyl-1,2,3-selenadiazole mol-ecules, resulting in a slightly distorted trans-CuN(2)O(4) octa-hedral geometry in which the cis angles deviate by less than 3° from 90°. The selenadiazole plane is ...

The prevalence, intensities of infestation, range of infestation and population composition of two phthirapteran species, Ardeicola expallidus Blagoveshtchensky (Phthiraptera: Philopteridae) and Ciconiphilus decimfasciatus Boisduval and Lacordaire (Menoponidae) on seventy cattle egrets were recorded during August 2004 to March 2005, in India. The frequency distribution patterns of both the spec...

Engagement of MHC class I-specific inhibitory receptors regulates natural killer (NK) cell development and function. Using both new and previously characterized anti-Ly49 monoclonal antibodies, we comprehensively determined expression and co-expression frequencies of four Ly49 receptors by NK cells from MHC-congenic, MHC class I-deficient, and Ly49A-transgenic mice to study mechanisms that shap...

We redefine the subfamily Arctoseiinae of the family Ascidae, and describe a new genus, Maxiniagen. n., based on a new species, Maxinia arctomontanasp. n., whose adults display a combination of attri-butes uniquely different from other genera of the subfamily. The geographical range of Maxinia arctomontana is limited by arctic and mountain landscapes of Siberia. This description provides furthe...

The structure of the title compound, poly[di-μ-penta-noato-zinc(II)], [Zn{CH(3)(CH(2))(3)COO}(2)](n), consists of a three-dimensional polymeric layered network with sheets parallel to the (100) plane, in which tetra-hedrally coordinated zinc(II) ions are connected by penta-noate bridges in a syn-anti arrangement. The hydro-carbon chains are in the fully extended all-trans conformation and are a...

The title compound, [Hf(C5H5)2(C8H16)], proves a structural motif of hafna-cyclo-pentane besides the coordination of two cyclo-penta-dienyl ligands in an η(5)-fashion. The hafna-cyclo-pentane ring has a twist conformation and is substituted by two ethyl groups in the β,β'-positions, which are trans orientated to each other. One cyclo-penta-dienyl ring and one ethyl group are each disordered ove...

The title compound, [Sn(2)(C(4)H(9))(2)(C(12)H(20))(2)], has two 1-stannacyclo-penta-diene skeletons related by inversion symmetry located at the mid-point of the Sn-Sn bond [2.7682 (2) Å]. Thus, the asymmetric unit comprises one half-mol-ecule. The planarity of the stannacyclo-penta-diene ring is illustrated by the dihedral angle of 0.3 (1)°, defined by the C(4) and C-Sn-C planes. To avoid ste...