Colorless crystal, [Ce(NO3)5H2O]· (C3N2H5) 2, has been obtained from the reaction of Ce(NO3) 3 with imdazole in the aqueous solution and its crystal structure has been determined by single crystal X-ray diffracti...Colorless crystal, [Ce(NO3)5H2O]· (C3N2H5) 2, has been obtained from the reaction of Ce(NO3) 3 with imdazole in the aqueous solution and its crystal structure has been determined by single crystal X-ray diffraction techniques. The crystal belongs to triclinic, space group P1. The cell parameters are: a = 0. 7489(l ) um, b = 0. 7914(2) nm, c = 1. 8139(3) nm, a = 89. 39(2)°, β = 89. 37(l） °,γ = 63. 18(2)°, Dc = 2. 1g. cm-3, Z = 2, R = 0. 0319. In the compound, all of five nitrates are bidentate and one molecule of water is monodentate, the coordination number of Ce (Ⅲ) is 11. The processes of thermal decomposition of the compound was proposed by its TG curve.展开更多
Seven novel N-(5-tetrazolyl) -N-(aryloxyacetyl)ureas have been synthesized by the additive reaction of 5-amino-1H-1,2,3,4-tetrazole with aryloxyacetyl isocyanate. Their structures were confirmed by IR, 1H NMR and el...Seven novel N-(5-tetrazolyl) -N-(aryloxyacetyl)ureas have been synthesized by the additive reaction of 5-amino-1H-1,2,3,4-tetrazole with aryloxyacetyl isocyanate. Their structures were confirmed by IR, 1H NMR and elemental analysis. The biological activity tests show the target compounds have a good activity as plant growth regulator, and N-(5-tetrazolyl)-N-(3-chlorophenyloxyacetyl)-urea and N-(5-tetrazolyl)-N-(1-naphthyloxyacetyl)-urea have a activity close to cytokinin.展开更多
文摘Colorless crystal, [Ce(NO3)5H2O]· (C3N2H5) 2, has been obtained from the reaction of Ce(NO3) 3 with imdazole in the aqueous solution and its crystal structure has been determined by single crystal X-ray diffraction techniques. The crystal belongs to triclinic, space group P1. The cell parameters are: a = 0. 7489(l ) um, b = 0. 7914(2) nm, c = 1. 8139(3) nm, a = 89. 39(2)°, β = 89. 37(l） °,γ = 63. 18(2)°, Dc = 2. 1g. cm-3, Z = 2, R = 0. 0319. In the compound, all of five nitrates are bidentate and one molecule of water is monodentate, the coordination number of Ce (Ⅲ) is 11. The processes of thermal decomposition of the compound was proposed by its TG curve.
文摘Seven novel N-(5-tetrazolyl) -N-(aryloxyacetyl)ureas have been synthesized by the additive reaction of 5-amino-1H-1,2,3,4-tetrazole with aryloxyacetyl isocyanate. Their structures were confirmed by IR, 1H NMR and elemental analysis. The biological activity tests show the target compounds have a good activity as plant growth regulator, and N-(5-tetrazolyl)-N-(3-chlorophenyloxyacetyl)-urea and N-(5-tetrazolyl)-N-(1-naphthyloxyacetyl)-urea have a activity close to cytokinin.
