Poly[dibromidobis[μ-1-(pyridin-4-ylmeth-yl)-1H-1,2,4-triazole-κN:N']cadmium].

The title coordination polymer, [CdBr(2)(C(8)H(8)N(4))(2)](n), arose from a layer-separated diffusion synthesis at room temperature. The title compound is isotypic with the I and Cl analogues. The Cd atom, located on an inversion center, is coordinated by two bromide ions and four N atoms (two from triazole rings and two from pyridyl rings) in a distorted trans-CdBr(2)N(4) octa-hedral arrangement.

Poly[dichloridobis[μ-1-(4-pyridyl-meth-yl)-1,2,4-triazole]cadmium(II)].

In the title coordination polymer, [CdCl(2)(C(8)H(8)N(4))(2)](n), the Cd(II) atom, lying on an inversion center, is coordinated by two Cl atoms and two triazole N atoms and two pyridyl N atoms from four 1-(4-pyridyl-meth-yl)-1,2,4-triazole (pmta) ligands in a distorted trans-CdCl(2)N(4) octa-hedral arrangement. The bridg-ing pmta ligands, with a dihedral angle between the triazole and pyridyl rings of 71.86 (8)°, link the Cd atoms into a 4(4) sheet parallel to (02).

A two-dimensional manganese(II) complex: poly[bis-(μ(2)-4,4'-bipyrid-yl)tetra-kis-(μ(2)-3,5-dinitro-benzoato)dimanganese(II)].

The Mn atom in the title compound, [Mn(2)(C(7)H(3)N(2)O(6))(4)(C(10)H(8)N(2))(2)](n), is six-coordinated by two N atoms and four O atoms, forming a distorted octa-hedral geometry. The Mn-O bond lengths are in the range 2.1281 (13)-2.

Poly[dichloridobis[μ-1-(4-pyridylmeth-yl)-1H-1,2,4-triazole]copper(II)].

The title coordination polymer, [CuCl(2)(C(8)H(8)N(4))(2)](n), arose from a layer-separated diffusion synthesis at room temperature. The Cu atom (site symmetry ) is coordinated by two chloride ions and four N atoms (two from triazole rings and two from pyridyl rings) in a distorted trans-CuCl(2)N(4) octa-hedral arrangement. The bridging 1-(4-pyridylmeth-yl)-1H-1,2,4-triazole ligands [dihedral angle between the triazole and pyridine rings = 68.

[Synthesis and photophysical properties of two kinds of substituted phthalocyaninatozinc].

Two kinds of substituted phthalocyaninatozinc, tetra-beta-phthalimidobutoxy phthalocyaninatozinc (1) and tetra-beta-phthalimidomethyl phthalocyaninatozinc (2), were synthesized by mix melting method, which bear the same phthalimide substituents but the linking of the substituents to the phthalocyanine ring is different. The substituent linking to the phthalocyanine ring is one methylene in ZnPc (2), while the substituents linking to the phthalocyanine ring is four methylenes and one ather in ZnPc (1), in which ather is near by phthalocyanine ring. The absorption and fluorescence spectra and the abilities of singlet oxygen generation of these two phthalocyanines were compared with respect to the effect of different linked fashions.

[Fluorescence spectra and photo-generating rate of singlet oxygen of phthalocyaninatopalladium].

The absorption spectral properties, fluorescence spectral properties and the abilities of photo-generating singlet oxygen of four phthalocyanines, namely tetra-alpha-(2,2,4-trimethyl-3-pentoxy) phthalocyaninatopalladium (zinc) and tetra-alpha-(2,4-diterbutylphenoxy) phthalocyaninatopalladium (zinc), were determined. Experimental results show that the ability of photo-generating singlet oxygen of phthalocyaninatopalladium is similar to that of phthalocyaninatozincx, though palladium(II) is an open shell electron structure and zinc( II ) is a closed shell structure. This may be concerned with a weak flourescence intensity and a strong inter-crossing transition of phthalocyaninatopalladium.

[Synthesis and UV/Vis spectra of a dialkyloxy substituted phthalocyanine].

A dialkyloxy substituted metal-free phthalocyanine was synthesized by using 3-(2',2',4'-trimethyl-3'-pentoxy)-1,3-diiminoisoindoles and 1,3,3-trichloroisoindolenine as starting materials, and characterized by element analysis, 1H NMR, IR and UV/Vis spectra. The dependences of wavelength of UV/Vis spectra and its split of Q band absorption on the number of substituents and, dielectric constant of solvents are discussed based on the comparison with tetraalkyloxy substituted metal-free phthalocyanine.

Development of a new sampling medium for bioaerosols.

Objective: To develop a new sampling medium for detecting of bioaerosols.

Methods: The sampling media were tested by using Escherichia coli, Staphylococcus aureus and Serratia marcescens under static and active conditions, preliminary applications were performed using AGI-10 and high volume sampler.

Results: The average recovery rates were raised to 24.