Syntheses, crystal-solution structures and magnetic properties of a series of decanuclear heterometallic [LnCoCo] (Ln = Eu, Gd, Tb, Dy) clusters.

Four unprecedented decanuclear heterometallic [Ln2CoII4CoIII4] clusters based on a diethanolamine ligand (H2dea), namely [Eu2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (1), [Gd2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·4CH3OH·2H2O (2), [Tb2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (3) and [Dy2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2·2CH3OH·4H2O (4) were synthesized through a facile solution method. Single-crystal X-ray diffraction analyses reveal that complexes 1-4 consist of a [Ln2CoII4CoIII4] core, which is constructed by bridging a quasi-double cuboidal [Ln2CoII2CoIII2] core with two [CoIICoIII] units. Electrospray ionization mass spectrometry (ESI-MS) using methanol solution reveals that complexes 1-4 are stable in the solution, and the clusters undergo three different substitution reactions (Cl- replaced by OH-, OH- replaced by CH3O- and HCOO- replaced by OH-/CH3O-) at the same time in the ionization state.

[Preparation of TBSI with NS-Acetic Anhydride Method and Its Spectral Analysis].

In the study, N-t-butyl-2-benzothiazole sulfenimide (TBSI) was prepared by NS-acetic anhydride method with acetic anhydride as solvent. It was detected with FTIR, XRD, UV-Vis, TG-DTA. Micro-structure and essence disciplinarian of them were disclosed.

[Study on the Preparation of N-Tert-Butylbenzothiazole-2-Sulphenamide and Its Spectral Analysis].

In the study, N-tert-butylbenzothiazole-2-sulphenamide (TBBS) was synthesized with one-step method with hydrogen peroxide as the oxidant. TBBS was detected and characterized with FTIR，UV-Vis，XRD and TG-DSC. Its micro-structure and intrinsic regularity were revealed.

[Preparation of Zinc O,O,O’,O’-Tetrabutyl Bis(Phosphorodithioate) and Its Spectral Analysis].

In the study, zinc O,O,O’,O’-tetrabutyl bis(phosphorodithioate) (ZBPD) was synthesized with two-step method firstly. ZBPD was detected and characterized with UV-vis, FT-IR andTG-DSC. Its micro-structure and intrinsic regularity were revealed.

[Preparation of Rubber Accelerator Tetraisobutylthiuram Monosulfide and Its Spectral Analysis].

In the study, rubber accelerator tetraisobutylthiuram monosulfide (TiBTM) was synthesized by two-step method with hydrogen peroxide as oxidant firstly. TiBTM was detected and characterized by FTIR, XRD, TG-DSC. Its micro-structure and intrinsic regularity were revealed.

Poly[(2,2'-bipyridine-κN,N')(μ(3)-2,4,6-trimethyl-isophthalato-κO,O:O:O,O)cadmium].

In the crystal structure of the polymeric title complex, [Cd(C(11)H(10)O(4))(C(10)H(8)N(2))](n), the Cd(II) cation is chelated by one 2,2-bipyridine ligand and two carboxyl groups from two trimethyl-isophthalate (TMIPA) anions, and is further coordinated by one carboxyl-ate O atom from a third TMIPA anion, forming a distorted penta-gonal-bipyramidal geometry. Each TMIPA anion bridges three Cd(II) cations, forming polymeric complex sheets parallel to (001). Weak C-H⋯O hydrogen bonding occurs between adjacent sheets.

4-[(2-Hy-droxy-naphthalen-1-yl)(morpholin-4-yl)meth-yl]benzonitrile.

The title compound, C(22)H(20)N(2)O(2), was synthesized via a multicomponent reaction using naphthalen-2-ol, morpholine and 4-formyl-benzonitrile. The dihedral angle between the naphthalene ring system and the benzene ring is 81.25 (10)°.

N-(2-Hy-droxy-benz-yl)adamantan-1-aminium 4-methyl-benzene-sulfonate.

In the crystal structure of the title salt, C(17)H(24)NO(+)·C(7)H(7)O(3)S(-), the N-(2-hy-droxy-benz-yl)adamantan-1-aminium cations and 4-methyl-benzene-sulfonate anions are linked by O-H⋯O and N-H⋯O hydrogen bonds. C-H⋯π inter-actions are also observed between the cation and the anion.

Piperazine-1,4-diium diacetate.

In the title salt, C(4)H(12)N(2) (2+)·2C(2)H(3)O(2) (-), the piperazine-1,4-diium cation has 2/m symmetry with the NH(2) unit located on a mirror plane and the acetate anion has m symmetry with all non-H atoms and one H atom located on a mirror plane. The piperazine ring adopts a chair conformation. In the crystal, the cations are linked with the anions via N-H⋯O hydrogen bonding into chains parallel to the c axis.

Distribution and fate of nonylphenol in an aquatic microcosm.

An aquatic microcosm consisting of four compartments, namely surface microlayer (SM), water sediment and biota (zebra fish), was developed to investigate the distribution and fate of nonylphenol (NP) in an aquatic environment. Level III and level IV fugacity-based multimedia models were used to calculate the distribution and fate of NP. Data obtained from model calculations were in good agreement with those of the experiments.

Sorption of small metabolites of nonylphenol polyethoxylates in single and complex systems on aquatic suspended particulate matter.

Sorption of nonylphenol (NP), nonylphenol monoethoxylate (NP1EO) and nonylphenol diethoxylate (NP2EO) as well as their binary and ternary mixtures were studied and compared on three simulated suspended particulate matters (SPMs). Sorption dynamics of NP on the three SPMs could be divided into two phases, the rapid sorption phase and the slow sorption phase. A third phase, 'apparent desorption' occurred before the slow sorption phase for NP1EO and NP2EO as well as for all mixtures.