新显色剂1-(2.4-二硝基苯)-3-(2-噻唑)-三氮烯的合成及与汞的显色反应研究

报道了新显色剂１－（２．４－二硝基苯）－３－（２－噻唑）－三氮烯的合成及其与Ｈｇ（Ⅱ）的显色反应。实验表明，在非离子表面活性剂ＴｒｉｔｏｎＸ－１００存在下，于ｐＨ１１．７５的三酸缓冲介质中，试剂与Ｈｇ（Ⅱ）能生成蓝绿色配合物，最大吸收波长位于６９０ｎｍ处，试剂的最大吸收波长位于４１０ｎｍ处，对比度高达２８０ｎｍ，其配合比为１∶２，表观摩尔吸光系数为１．１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ｈｇ（Ⅱ）含量在０～１８μｇ／２５ｍＬ范围内符合比耳定律。测定了废水中汞的含量，结果令人满意。     

新试剂1-(6-硝基-2-苯并噻唑)-3-(4-硝基苯)-三氮烯与锌的显色反应研究及应用

研究了新显色剂１－（６－硝基－２－苯并噻唑）－３－（４－硝基苯）－三氮烯（ＮＢＴＮＰＴ）与锌的显色反应，在非离子表面活性剂ＴｒｉｔｏｎＸ－１００存在下，ｐＨ１０．１～１０．８的Ｎａ２Ｂ４Ｏ７－ＮａＯＨ缓冲溶液中，Ｚｎ２＋与试剂能形成１∶２的橙黄色配合物，最大吸收波长为４４６ｎｍ，同时在５２８ｎｍ处配合物表现有最大负吸收，其表观摩尔吸光系数分别为ε＝７．０３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１和ε＝１．０６×１０５Ｌ·ｍｏｌ－１·ｃｍ－１．用拟定的方法测定了人发和婴儿奶粉中的微量锌，结果令人满意．     

新显色剂5-(5-氯-2-羟基苯偶氮)若丹宁与Au(Ⅲ)显色反应的应用研究

研究了新显色剂５－（５－氯－２－羟基苯偶氮）若丹宁与Ａｕ（Ⅲ）的显色反应．在１ｍｏｌ·Ｌ－１左右的盐酸介质中，Ａｕ（Ⅲ）与试剂形成１∶１的橙红色配合物，最大吸收峰位于５４０ｎｍ，表观摩尔吸光系数为５．７５×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．大量碱金属、碱土金属和有色金属离子不干扰测定，贵金属元素除钯外，也有较大的允许量，该反应选择性较好，灵敏度较高，无须加掩蔽剂，方法可用于含金废水中金的测定，结果满意     

新试剂N-间甲苯基-N′-(氨基对苯磺酸钠)硫脲(MMPT)的合成及其在分析化学中的应用

本文合成新试剂Ｎ－间甲苯基－Ｎ′－（氨基对苯磺酸钠）硫脲（ＭＭＰＴ），经红外、紫外、核磁、元素分析等测试，确定其结构。研究测定了试剂与４０多种离子的反应及其配合物的表观摩尔吸光系数，它可作为Ｃｕ２＋（ｍ＝０．０１５μｇ，ｃ＝０．５μｇ／ｍＬ）、Ａｇ＋（ｍ＝０．１μｇ，ｃ＝３．３μｇ／ｍＬ）的新鉴定试剂和光度法测定Ｐｄ２＋（ε３０９．７＝６．３２×１０４Ｌ·ｍｏｌ－１·ｃｍ－１）、Ｐｔ（Ⅳ）（ε７５４．４＝８．５８×１０４Ｌ·ｍｏｌ－１·ｃｍ－１）等的显色剂，方法灵敏度高、选择性好，用于阳极泥、人发、矿石及催化剂中上述元素的鉴定或测定，均获满意结果。     

二安替比林-(2-甲氧基)-苯基甲烷光度法测定铬

合成了新试剂二安替比林－（2－甲氧基）－苯基甲烷（DAoMM）；研究了在Mn（Ⅱ）存在下，DAoMM与Cr（Ⅵ）生成橙黄色化合物。该化合物最大吸收位于480nm；表观摩尔吸收系数为ε=1．58×105L·mol－1·cm－1和ε2=9．85×104L·mol－1·cm－1化合物至少稳定20h。服从比尔定律范围0～1．6×102μg／LCr（Ⅵ）和2×102～8×102μg／LCr（Ⅵ）。用于含铬废水和电镀废液中铬的测定，结果满意。     

5-[2-(4-氯苯酚)偶氮]-若丹宁与铂(Ⅱ)的显色反应研究及应用

研究了新显色剂５－［２－（４－氯苯酚）偶氮］－若丹宁与铂（Ⅱ）的显色反应．在Ｈ２ＳＯ４－Ｈ３ＰＯ４介质中和ＣＴＭＡＢ存在下，试剂与Ｐｔ（Ⅱ）形成有色配合物，λｍａｘ位于４２６ｎｍ，摩尔吸光系数为３．２４×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ｐｔ（Ⅱ）量在４．００～１０μｇ／２５ｍＬ符合比耳定律，方法用于铂催化剂中铂的测定，获得较好的结果．     

2-(3,5-二氯-2-吡啶偶氮)-5-二甲氨基苯胺与铂(Ⅳ)显色反应的研究

研究了２－（３，５－二氯－２－吡啶偶氮）－５－二甲氨基苯胺（３，５－ｄｉＣｌ－ＰＡＤＭＡ）与铂（Ⅳ）的显色反应及铂配合物的质子化行为。结果表明，在０．０４～０．４８ｍｏｌ／Ｌ的Ｈ２ＳＯ４溶液中，于加热的条件下，试剂可与铂（Ⅳ）形成稳定的１∶２绿蓝色ＰｔＬ２Ｈ２＋２配合物，其最大吸收波长位于６３４ｎｍ，表观摩尔吸光系数为９．７３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，桑德尔灵敏度为０．００２μｇ·ｃｍ－２。铂配合物的三级质子化常数分别为：ｌｇＫａ１＝３．９１，ｌｇＫａ２＝－２．２１，ｌｇＫａ３＝－３．３７。较大量的常见金属离子及除钯、钌外的其它贵金属离子不干扰测定。利用Ｐｔ，Ｐｄ与试剂反应所需的温度差异，可以用差减法消除微量Ｐｄ的干扰．铂（Ⅳ）浓度在每１０ｍＬ０～７．５μｇ范围内符合比尔定律。所拟方法用于二次合金管理样－８８及催化剂中微量铂的测定，结果满意。     

新试剂2-[2-(6-甲基苯并噻唑)偶氮]-5-二乙氨基苯甲酸与铁(Ⅱ)显色反应的研究与应用

本文研究了新试剂２－［２－（６－甲基苯并噻唑）偶氮］－５－二乙氨基苯甲酸（６－Ｍｅ－ＢＴＡＥＢ）与Ｆｅ（Ⅱ）的显色反应。结果表明，在十二烷基硫酸钠存在下新试剂与Ｆｅ（Ⅱ）在弱酸性介质中形成稳定的蓝紫色络合物，其组成为Ｆｅ（Ⅱ）∶６－Ｍｅ－ＢＴＡＥＢ＝１∶２，最大吸收波长为６３５ｎｍ，表观摩尔吸光系数为１．１０×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ｆｅ（Ⅱ）浓度在每２５ｍＬ０～１０μｇ范围内服从比尔定律。在ＮａＦ和硫脲存在下方法具有好的选择性。并可用于直接测定铝合金中微量的铁，结果满意。     

新试剂1-(6-硝基-2-苯并噻唑)-3-(4-硝基苯)-三氮烯与汞(Ⅱ)显色反应的研究及应用

新试剂１－（６－硝基－２－苯并噻唑）－３－（４－硝基苯）－三氮烯与汞（Ⅱ）显色反应的研究及应用金传明龚楚儒胡宗球杨明华（湖北师范学院化学系黄石４３５００２）关键词１－（６－硝基－２－苯并噻唑）－３－（４－硝基苯）－三氮烯显色反应汞中图分类号Ｏ６５７．...     

2-(4-氯-2-膦酸基苯偶氮)-7-(2,6-二溴-4-氯苯偶氮)-1,8-二羟基3,6-萘二磺酸与铋的显色反应及应用

１ 引 言 ＤＢＣ－偶氮氯膦全称为：２－（４－氯－２－膦酸基苯偶氮）－７－（２，６－二溴－４－氯苯偶氮）－１，８－二羟基３，６－萘Ｈ磺酸，简写为ＤＢＣ－ＣＰＡ。它已用于稀土、钡、锶、钙和钐的测定。作者在研究了该试剂与铁显色反应的基础上，又研究了与铋的显色反应，发现在１．２ｍｏＬ／Ｌ　ＨＣｌＯ４的介质中，于少量乙醇存在下，试剂与铋生成２：１的络合物，络合物稳定性好，灵敏度高，其表观摩尔吸光系数 １．０８× １０５ Ｌ·ｍｏｌ－１·ｃｍ－１，常见离子：银、镁、镉、钴、镍、铜、锰、铝、锌、铁、铬、硅等允许共…     

手性二噁唑啉吡啶铁和镍配合物的制备与表征

Tridentate bis(oxazolinylpyridine)(1) reacted with nickel chloride or ferrous chloride in anhydrous ethanol to form bis(oxazolinylpyridine) Nickel(Ⅱ) and Iron(Ⅱ) complexes. The stable solid complexes were characterized with IR， UV， MS， XPS and elemental analysis. No stable complexes were formed with bidentate bis(oxazoline)(2) ins- tead of bis(oxazolinylpyridine).     

Asymmetric Synthesis of (R)-and (S)-Moprolol

A simple and effective procedure for the enantioselective synthesis of (R)-and (S)-moprolol was described.The key step was the asymmetric synthesis of enantiopure (R)-and (S)-guaifenesin,which were synthesized from enantioenriched (R)-3-chloro-1,2-propanediol and (S)-epichlorohydrin via kinetics of hydrolysis resolution of racemic epichlorohydrin by chiral Salen-CoIIII complex.The e.e.values of both the optical compounds were above 98%,and the chemical structures of the target compounds were confirmed by 1H NMR,13C NMR,IR,and MS.     

(Phosphine)gold(I) Complexes of Benzenedithioles. Crystal structures of 1,2-benzenedithiolato-bis[triphenyl-phosphinegold(I)] and bis(triethylphosphine)gold(I) bis(1,2-benzenedithiolato)gold(III)

The reaction of 1,2- and 1,3-benzenedithiol C₆H₄(SH)₂ with chloro(phosphine)gold(I) complexes R₃PAuCl (R = Et, Ph) in the presence of triethylamine in tetrahydrofuran gives stable gold(I) complexes 1,2-C₆H₄(SAuPR₃)₂ [R = Et ( 1 ) and Ph ( 2 )] or 1,3-C₆H₄(SAuPPh₃)₂ ( 3 ), respectively, in high yield. The compounds have been characterized by analytical and NMR spectroscopic data. From the reaction of 1,2-C₆H(SH)₂ with Et₃P? AuCl a by-product [(Et₃P)₂Au]⁺ [Au(1,2? C₆H₄S₂)₂]^? ( 4 ) has also been isolated in low yield. The crystal structures of compounds 2 and 4 have been determined by single crystal X-ray diffraction. The gold(I) atoms in complex 2 are two-coordinate with bond angles S? Au? P of 175.2(1) and 159.5(1)°, Au? S bond distances of 2.304(1) and 2.321(1) å, and a short Au…?Au contact of 3.145(1) Å. The gold(I) atom in the cation of complex 4 is also linearly two-coordinate with a P? Au? P angle of 170.1(1) Å and Au? P distances of 2.296(3) and 2.298(3) Å. The geometry of the anion in 4 shows a square-planar coordination of gold(III) by two chelating 1,2-benzenedithiolate ligands with Au? S distances between 2.299(3) and 2.312(3) Å (for two crystallographically independent, centrosymmetrical anions in the unit cell).     

Rhodium(III), palladium(II) and platinum(II) complexes of Bis(o-aminobenzenesulfonyl)ethylenediamine

New complexes of the formulae K₃[RhL ₃]·2 H₂O, [PdL]·H₂O and [M(LH₂)Cl₂] [whereM = Pd, Pt andLH₂ = bis(o-aminobenzenesulfonyl)ethylenediamine] have been prepared and characterized by conductivity measurements, thermogravimetric analysis, X-ray powder patterns and IR, Ligand Field and¹H-NMR spectroscopy.

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Rhodium(III), Palladium(II)- und Platin(II)-Komplexe mit Bis(o-aminobenzolosulfonyl)ethylendiamin (Kurze Mitteilung)

Zusammenfassung Neue Komplexe der allgemeinen Formeln K₃[RhL ₃]·2H₂O, [PdL]·H₂O und [M(LH₂)Cl₂] mitM = Pd, Pt undLH₂ = Bis(o-aminobenzolosulfonyl)ethylendiamin wurden dargestellt und mit Konduktionsmessungen, thermogravimetrischen Analysen, Röntgenstrukturanalysen, IR, Ligandfeld- und¹H-NMR-Spektroskopie charakterisiert.

     

Molecular structure of (3,5-diallylisocyanuratomethyl)bis(chloromethyl)phosphine oxide. Synthesis of (3,5-diallylisocyanuratomethyl)phosphine sulfides

X-Ray study of the (3,5-diallylisocyanuratomethyl)bis(chloromethyl)phosphine oxide showed that the phosphorylmethyl group is bonded to the nitrogen atom of the cycle. Reaction of the tris(chloromethyl)phosphine sulfide with sodium diallylisocyanurate gave (3,5-diallylisocyanuratomethyl)bis(chloromethyl)phosphine sulfide, and treatment of the tris(3,5-diallylisocyanuratomethyl)phosphine oxide with phosphorus pentasulfide gave a tris(3,5-diallylisocyanuratomethyl)bis(chloromethyl)phosphine sulfide.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1446–1448, August, 1993.     

界面缩聚法合成双(烯基环戊二烯基)钛(锆)聚醚的研究

本文通过界面缩聚法利用双(烯基环戊二烯基)钛(锆)二氯化物与二酚反应,制成了16个新的高分子化合物,对它们进行了IR、TGA和分子量的测定。文中还对反应条件与分子量的关系进行了讨论。     

以氯醌酸二价阴离子为桥联配体的Fe(Ⅲ)-Fe(Ⅲ)和Mn(Ⅱ)-Mn(Ⅱ)双核配合物的合成与磁性

基于铁和锰的双核配合物在生物氧化还原过程中的重要作用及在化学的氧化还原过程中可能做为催化剂的应用前景,本文合成了两个新的以氯醌酸二价阴离子为桥联配体的Fe(Ⅲ)双核和Mn(Ⅱ)双核配合物:[Fe_2(phen)_4(μ-CA)](ClO_4)_4·2H_2O(1)和[Mn_2(phen)_4(μ-CA)](ClO_4)_2·3H_2O(2)(phen=1,10菲咯啉;CA=氯醌酸二价阴离子)。经元素分析、IR、电子光谱及磁性等测定,对两配合物进行了表征。     

Synthesis of (diorgano)chloro(4-chlorobutoxy)silanes

Some novel (diorgano)chloro(4-chlorobutoxy)silanes were obtained by the reaction of dichlorodiorganosilanes with tetra hydrofuran in the presence of chloroplatinic acid.Translated fromIzvestiva Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 943–945, April, 1996.     

草酸根桥联的不对称双核铜(Ⅱ)和铜(Ⅱ)-锌(Ⅱ)配合物的合成与磁性

本文合成了一组新的不对称的双核配合物,[Cu_2(C_2O_4)_2terp]和〔Cu Zn(C_2O_4)_2terp〕(图1),terp表示联三吡啶。配合物〔Cu_2(C_2O_4)2terp〕的变温磁化率已测,其数值已用最小二乘法与Bleaney-Bowers方程拟合,求得交换积分J=-47.20cm~(-1)。文中还用Kahn理论解释了这种较弱的反铁磁自旋交换作用。     

Synthesis and Crystal Structure of 4-Chloro-N- （2-（2-nitrophenyl）acetoxy）-N-（m-tolyl）benzamide

The new title compound 4-chloro-N-(2-(2-nitrophenyl)acetoxy)-N-(m-tolyl)benzamide(C22H17ClN2O5, Mr = 424.82) has been synthesized via the reaction of 4-chloro-N-hydroxy-N-(m-tolyl)benzamide with 2-(2-nitrophenyl)acetyl chloride. The structure of the product was confirmed by 1H NMR, 13 C NMR, IR, HRMS(ESI) and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group P21/c with a = 13.0269(10), b = 6.7251(6), c = 23.9313(16) , β = 99.931(6)o, V = 2065.1(3) 3, Z = 4, Dc = 1.366 g/cm3, F(000) = 880, μ = 0.221 mm-1, the final R = 0.0600 and wR = 0.1754 for 1981 observed reflections(I 2σ(I)). X-ray analysis indicates that the chloro-phenyl ring(C(10)~C(15)) and the methyl-substituted benzene ring(C(16)~C(21)) are not coplanar with the nitro-substituted benzene ring(C(1)~C(6)), with the dihedral angle to be 70.78° and 63.72°, respectively. Hydrogen bonds C(2)–H(2)···O(2) and C(7)–H(7B)···O(5) are observed.