标题化合物(SYP-249)是沈阳化工研究院正在进行前期开发的除草剂,由5-(2-氯-4-三氟甲基苯氧基)-2-硝基苯甲酸经两步反应制得,提纯后总收率50%。其结构经红外、核磁共振谱和元素分析确证。标题化合物在温室条件下150 g a.i./hm2可防除多...标题化合物(SYP-249)是沈阳化工研究院正在进行前期开发的除草剂,由5-(2-氯-4-三氟甲基苯氧基)-2-硝基苯甲酸经两步反应制得,提纯后总收率50%。其结构经红外、核磁共振谱和元素分析确证。标题化合物在温室条件下150 g a.i./hm2可防除多种杂草,在600 g a.i./hm2对大豆安全。展开更多
A binuclear terbium complex with 2,4,6-Trimethylbenzoate and 1,10-phenanthroline,[Tb2(TMBA)6(Phen)2],has been synthesized(TMBA=2,4,6-Trimethylbenzoic acid and phen=1,10-phenanthroline)and characterized by IR,elemental...A binuclear terbium complex with 2,4,6-Trimethylbenzoate and 1,10-phenanthroline,[Tb2(TMBA)6(Phen)2],has been synthesized(TMBA=2,4,6-Trimethylbenzoic acid and phen=1,10-phenanthroline)and characterized by IR,elemental analysis and X-ray diffraction methods.The title complex crystallizes in monoclinic system,space group P21 /c with a=1.327 5(2)nm,b=2.817 9(5)nm,c=1.282 5(2)nm,β=116.692(3)°,V=4.286 2(13)nm3,Z=4,Dc=1.423 g·cm-3.There are four bridged carboxylate groups of the 2,4,6-trimethylbenzoic acid bonded to the two terbium ions,each ions is also chelated with the two oxygen atoms of a molecule of the 2,4,6-trimethylbenzoic acid and the two nitrogen atoms of a 1,10-phenanthroline respectively,forming a 8-coordination distorted square antiprism.Average Tb-O and Tb-Ndistance of the two Tb(Ⅲ)ions are equal respectively.This shows the two terbium ions are in the same chemical enviorments.The complex emits intense green fluorescence under ultraviolet light.CCDC:619215.展开更多
文摘标题化合物(SYP-249)是沈阳化工研究院正在进行前期开发的除草剂,由5-(2-氯-4-三氟甲基苯氧基)-2-硝基苯甲酸经两步反应制得,提纯后总收率50%。其结构经红外、核磁共振谱和元素分析确证。标题化合物在温室条件下150 g a.i./hm2可防除多种杂草,在600 g a.i./hm2对大豆安全。
文摘A binuclear terbium complex with 2,4,6-Trimethylbenzoate and 1,10-phenanthroline,[Tb2(TMBA)6(Phen)2],has been synthesized(TMBA=2,4,6-Trimethylbenzoic acid and phen=1,10-phenanthroline)and characterized by IR,elemental analysis and X-ray diffraction methods.The title complex crystallizes in monoclinic system,space group P21 /c with a=1.327 5(2)nm,b=2.817 9(5)nm,c=1.282 5(2)nm,β=116.692(3)°,V=4.286 2(13)nm3,Z=4,Dc=1.423 g·cm-3.There are four bridged carboxylate groups of the 2,4,6-trimethylbenzoic acid bonded to the two terbium ions,each ions is also chelated with the two oxygen atoms of a molecule of the 2,4,6-trimethylbenzoic acid and the two nitrogen atoms of a 1,10-phenanthroline respectively,forming a 8-coordination distorted square antiprism.Average Tb-O and Tb-Ndistance of the two Tb(Ⅲ)ions are equal respectively.This shows the two terbium ions are in the same chemical enviorments.The complex emits intense green fluorescence under ultraviolet light.CCDC:619215.
