发光PtⅡ-CuⅠ异核配合物[Pt4Cu2(edt)4(PPh3)6](ClO4)2(4H2O)的合成及其表征

Self-assembly between Pt(phen)(edt) (phen=phenanthroline, edt=1,2-ethanedithiolate) and [Cu(PPh₃)₂(MeCN)₂](ClO₄) (PPh₃=triphenylphosphine) gave rise to formation of heterohexanuclear complex [Pt₄Cu₂(edt)₄(PPh₃)₆](ClO₄)₂(4H₂O) (1). The complex was characterized by elemental analyses, ES-MS, UV-Vis, IR, ³¹P NMR spectroscopy and X-ray crystallography. The molecule consists of two [Pt₂Cu(edt)₂(PPh₃)₃] units which has a centrosymmmetric inversion to give a cyclic heterohexanuclear skeleton. The Pt^Ⅱ and Cu^Ⅰ center adopt square-planar and trigonal coordination modes, respectively. The compound shows intense emission at 632 nm in the solid state and at 678 nm in frozen dichloromethane glass at 77 K.     

Syntheses and Characterizations of Luminescent Complexes [(BINAP)Pt(C≡CC_6H_4R-p)_2] (R = H, 1; CH_3, 2) (BINAP = 2,2’-Bis(diphenylphosphino)-1,1’-binaphthyl)

1 INTRODUCTION σ-Alkynyl complexes of platinum have attracted considerable attention over the last few years not only for their structural aspect and reactivity[1~5], but also for their role as building blocks for molecular materials with interesting properties[6~10]. These complexes are usually stabilized by neutral ligands, such as tertiary phosphines PR3, diphosphines, and so on. However, as far as we know, similar platinum acetylide compounds containing the chiral diphos- phine liga…     

Luminescent Tetranuclear Copper（I） Phenylacetylide Complex with Cyclohexyl Isocyanide

1INTRODUCTIONThechemistryofmetalalkynylcomplexeshasattractedmuchattentioninrecentyearsduetothespecificinterestinstructuraltopologyandopticalproperties[1～6].Ithasbeendemonstratedthatoneofthefeasiblestrategiestoattainoligomericmetalalky-nylcomplexesistodepolymerizepolymericspeciesofmetalalkynylsbyusingorganicligandssuchasphosphines[7～11]andisocyanides[12～14].Insomecases,simplemetal-containingcomponentsarealsoavail-abletodepolymerizethepolymericmetalalkynyl,formingalkynyl-bridgedheterometa…     

Coordination Triangular Prism of Bisilver Complex with Triply—bridged of Bis（diphenylphosphino）amine

1 INTRODUCTION Recently coinage metal complexes of poly- dentate phosphines are of great interest owing to the applications in diverse areas such as supramolecular design, photophysics and catalysis[1～4]. It is well- known that the binuclear coinage metal complexes of diphosphine [M2(diphosphine)2(MeCN)2]2+ (M = Cu, Ag, Au)[5～16] are excellent precursors for the design of polynuclear or polymeric materials with desired properties due to the easy substitution of weakly coordinated ac…     

二氰氨根[N(CN)2-]/三氰甲根[C(CN)3-]桥联双核钌RuⅡRuⅢ混合价配合物的设计合成、表征和电子传递行为

trans-[XRu(py)₄(NO)]²⁺(X=Cl，Br)与等物质的量的NaN₃在甲醇中反应后生成中间体trans-[XRu(py)₄(CH₃OH)]⁺，它再与过量的Na[N(CN)₂]或K[C(CN)₃]反应后生成单核配合物trans-XRu(py)₃L(X=Cl，Br，L=N(CN)₂^-，C(CN)₃^-)。单核配合物XRu(py)₄L与[X′Ru(py)₄(CH₃OH)]⁺进行分子组装，生成了一系列双核钌配合物trans-[X(py)₄Ru(μ-L)Ru(py)₄X′]⁺。用等物质的量的NOBF₄或(NH₄)₂[Ce(NO₃)₆]氧化这些Ru^ⅡRu^Ⅱ双核钌配合物，得到了一系列Ru^ⅡRu^Ⅲ混合价配合物trans-[X(py)₄Ru(μ-L)Ru(py)₄X′]²⁺。N(CN)₂-桥联的Ru^ⅡRu^Ⅲ混合价配合物在近红外区存在中等强度的吸收，起源于混合价态间的电荷跃迁(Intervalence Charge Transfer，简称为IVCT)，且其最大吸收波长随着溶剂极性的改变而发生变化，它们属于Class Ⅱ类型的混合价化合物；而C(CN)₃-桥联的Ru^ⅡRu^Ⅲ混合价配合物在近红外的吸收要强得多，且溶剂极性的改变对IVCT最大吸收波长基本无影响，它们属于介于价态定域与离域之间的混合价配合物。