{'-[()-1-(5-Chloro-2-oxidophen-yl)ethyl-idene]-4-meth-oxy-benzohydrazidato-κ ,','}(1-imidazole-κ )nickel(II).

In the title complex, [Ni(CHClNO)(CHN)], the Ni ion is coordinated by two O atoms and one N atom derived from the dianionic '-[(1)-1-(5-chloro-2-hy-droxy-phen-yl)ethyl-idene]-4-meth-oxy-benzohydrazide ligand and one N atom from the imidazole mol-ecule. The NO donor set defines an approximate square-planar geometry. The dihedral angles between the imidazole ring and the fused six-membered and meth-oxy-benzene rings are 17.

N'-[(E)-1-(5-Bromo-2-hy-droxy-phen-yl)ethyl-idene]-2-chloro-benzohydrazide.

The title compound, C(15)H(12)BrClN(2)O(2), was synthesized by the condensation of 1-(5-bromo-2-hy-droxy-phen-yl)ethanone with 2-chloro-benzohydrazide in anhydrous ethanol. The Schiff base mol-ecule displays a trans configuration with respect to the C=N double bond. The dihedral angle between the two benzene rings is 13.

Bis{μ-4-chloro-N'-[(E)-1-(5-chloro-2-oxidophen-yl)ethyl-idene]benzohydrazidato}bis-[pyridine-copper(II)].

The crystal structure of the title complex, [Cu(2)(C(15)H(10)Cl(2)N(2)O(2))(2)(C(5)H(5)N)(2)], features centrosymmetric dimers. The Cu(II) ion is penta-coordinated in a quadratic pyramidal mode. The quadratic plane is formed by the O,O',N-tridentate ligand and a pyridine mol-ecule.

N'-[(E)-1-(3,5-Dichloro-2-hy-droxy-phen-yl)ethyl-idene]-4-meth-oxy-benzo-hydrazide monohydrate.

The title compound, C(16)H(14)Cl(2)N(2)O(3)·H(2)O, displays a trans conformation with respect to the C=N double bond. The dihedral angle between the two benzene rings is 4.98 (12)°.

N'-[(1E)-1-(3,5-Dichloro-2-hy-droxy-phen-yl)propyl-idene]-4-meth-oxy-benzohydrazide monohydrate.

The title compound, C(17)H(16)Cl(2)N(2)O(3)·H(2)O, displays a trans conformation with respect to the C=N double bond. The dihedral angle between the two benzene rings is 30.77 (5)° and there is one intra-molecular N-H⋯O hydrogen bond.

Methyl 2-(p-toluene-sulfonamido)benzoate.

The title compound, C(15)H(15)NO(4)S, was prepared by simple condensation of methyl 2-amino-benzoate and 4-methyl-benzene-sulfonyl chloride. The dihedral angle between the benzene rings is 84.36 (6)°.

N'-[(1E)-1-(5-Chloro-2-hydroxy-phen-yl)propyl-idene]-4-methoxy-benzohydrazide.

The title compound, C(17)H(17)ClN(2)O(3), has a trans conformation about the C=N double bond and an intra-molecular O-H⋯N occurs. The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen bonds.

(E,E)-2,5-Bis(5-chloro-2-methoxyphenyl)-3,4-diazahexa-2,4-diene.

The title compound, C(18)H(18)Cl(2)N(2)O(2), was synthesized by the reaction of 1-(5-chloro-2-methoxy-phen-yl)ethanone with hydrazine hydrate. The mol-ecule lies on a crystallographic twofold axis passing through the mid-point of the N-N bond with one half-mol-ecule in the asymmetric unit. The dihedral angle between the two aromatic rings is 44.

N-[(R)-(2-Chloro-phen-yl)(cyclo-pent-yl)meth-yl]-N-[(R)-(2-hydr-oxy-5-methyl-phen-yl)(phen-yl)meth-yl]acetamide.

In the title compound, C(28)H(30)ClNO(2), the cyclo-pentane ring adopts an envelope conformation. In the crystal structure, mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds, forming chains running along the a axis.

(E,E)-4,4'-Dichloro-2,2'-[azinobis(phenyl-methyl-idyne)]diphenol.

The title compound, C(26)H(18)Cl(2)N(2)O(2), was synthesized by the reaction of (5-chloro-2-hydroxy-phen-yl)(phen-yl)methanone with hydrazine hydrate. The mol-ecule possesses a crystallographically imposed centre of symmetry at the mid-point of the N-N bond. The conformation of the mol-ecule is stabilized by an intra-molecular O-H⋯N hydrogen bond.

2,4-Dichloro-6-((1R)-1-{[(R)-(2-chloro-phen-yl)(cyclo-pent-yl)meth-yl]amino}eth-yl)phenol.

In the title compound, C(20)H(22)Cl(3)NO, the five-membered ring adopts an envelope conformation, and the two benzene rings are oriented at a dihedral angle of 40.44 (9)°. Intra-molecular O-H⋯N and N-H⋯Cl hydrogen bonding is present.

[The relationship between soil respiration and the temperature at different soil depths in subalpine coniferous forest of western Sichuan Province].

By using closed chamber IRGA technique, a continuous measurement of soil respiration rate was conducted in the subalpine natural coniferous forest mainly composed of Abies faxoniana in the eastern edge of Qinghai-Tibet Plateau, with the temperature at different soil depths (0, 5, 10, 15 and 20 cm) measured simultaneously. Base on the measurements, the quantitative relationships between soil respiration rate and the temperature at different soil depths were explored, and the results showed that the soil respiration rate in the forest had remarkable diurnal and seasonal changes, being the highest at 12:00-14:00 and in August, and the lowest at 8:00-10:00 and in November, which were accorded with the dynamics of soil temperature. Soil respiration rate had a significant exponential correlation with the temperature at different soil depths, and the highest correlation occurred at the soil depth of 15 cm (R2 =0.

N'-[(1E)-(3,5-Dichloro-2-hydroxy-phen-yl)(phen-yl)methyl-ene]-4-methoxy-benzohydrazide.

The title compound, C(21)H(15)Cl(2)N(2)O(3), displays a trans configuration with respect to the C=N double bond. The mol-ecular conformation is stabilized by an intra-molecular O-H⋯N hydrogen bond.

2-Hydr-oxy-N'-[(1Z)-1-(2-hydr-oxy-5-methyl-phen-yl)-2-methyl-propyl-idene]benzohydrazide.

The title compound, C(18)H(20)N(2)O(3), adopts a cis conformation with respect to the C=N double bond. The crystal structure is stabilized by intra-molecular N-H⋯O and inter-molecular O-H⋯O hydrogen bonds.