联二噻吩稠合的近红外BODIPY染料的合成与光谱性质

以叠氮乙酸乙酯和联二噻吩甲醛为原料,合成了联二噻吩并吡咯单体,之后在酸催化下与4-N,N-二甲基氨基苯甲醛缩合并与三氟化硼配位,得到一个新型的BODIPY染料SY。采用~1HNMR、质谱以及元素分析对其结构进行了表征。化合物SY在二氯甲烷中的最大吸收和发射波长分别为654和689nm;采用荧光光谱滴定方法研究了它对pH值的响应,酸性条件下N,N-二甲基苯氨基团发生质子化,抑制了光诱导电子转移对BODIPY母体的荧光淬灭,其溶液的荧光显著增强,染料SY可以作为近红外的pH值荧光探针。     

1,3-二(乙氧基甲基)-5-N,N-二甲氨基-6-甲基尿嘧啶的合成

报道了1,3-二(乙氧基甲基)-5-N,N-二甲氨基-6-甲基尿嘧啶方便、高产率的合成方法. 以6-甲基尿嘧啶(1)为起始物, 经硝化、嘧啶N¹,N ³-烷基化、还原及氨基甲基化, 首次高产率合成了1,3-二(乙氧基甲基)-5- N,N -二甲氨基-6-甲基尿嘧啶(5), 并对其化学结构进行了表征.     

含多羟基的手性Salen Mn(Ⅲ)配合物的合成与催化性质

合成并表征了2个含有多羟基官能团的新型手性Salen((R,R)-N,N′-[2,2′-双(次氨基次甲基)]双[4-(亚甲基-N,N′-二乙醇氨基)-6-(1,1-二叔丁基)苯酚]-1,2-环己二胺) (5)和(R,R)-N,N′-[2,2′-双 (次氨基次甲基)]双[4-(亚甲基-N,N′-二乙醇氨基)-6-(1,1-二叔丁基)苯酚]-1,2-二苯基乙二胺) (6))的Mn(Ⅲ)配合物7     

2-取代吡啶半菁染料的无溶剂微波合成及光谱性质的理论研究

在微波促进无溶剂条件下, 由N-甲基-2-甲基吡啶碘盐与取代芳香醛在哌啶作用下合成了一系列2-取代的吡啶半菁染料, 产物结构由元素分析, ¹H NMR, MS, IR, UV得到确认. 该方法操作简便, 收率高. 在此基础上, 对N-甲 基-2-(p-N,N-二甲氨基-苯乙烯基)吡啶半菁染料的光谱性质进行了理论计算.     

Meso位单取代卟啉及其配合物的合成、表征和光谱性质

设计合成了一系列新型的meso位N,N-二甲氨基苯基或N-苯基咔唑基单取代卟啉（5a~c）及其锌配合物（6a~c）,用高分辨质谱、¹H NMR、紫外-可见光谱及X射线单晶衍射方法等对结构进行了表征;研究了卟啉化合物及其配合物的热稳定性及荧光性质。结果表明,这些卟啉化合物及其锌配合物在400~410 nm之间具有强的吸收且具有很好的热稳定性,荧光量子产率在0.05~0.09;另外还分析了meso位不同取代基对光谱性质的影响。     

多苯并咪唑锌配合物抑制蛋白酪氨酸磷酸酶(PTPs)的活性

本文报道了5种多苯并咪唑锌配合物,即[Zn(TDB)₂]Cl₂(1)、[Zn(NTB)Cl]Cl (2)、[Zn(EDTB)]Cl₂(3)、[Zn₂(EGTB)Cl₂]Cl₂(4)和[Zn₂(DTPB)Cl₃]Cl (5),其中TDB=1,2-二(2-苯并咪唑)-1,2-二羟基乙烷、NTB=N,N,N-三(2-甲基苯并咪唑)胺、EDTB=N,N,N'',N''-四(2-苯并咪唑亚甲基)-1,2-乙二胺、EGTB=N,N,N'',N''-四(2-苯并咪唑甲基)-1,4-二乙胺基乙二醚以及DTPB=N,N,N'',N",N"-五(2-苯并咪唑甲基)-二乙三胺,对5种蛋白酪氨酸磷酸酶(PTP1B、TCPTP、PTP-MEG2、SHP-1和SHP-2)的抑制作用,结果显示这些配合物强烈抑制PTP1B的活性,其IC₅₀值在0.15~0.28μmol·L^-1范围内,但对PTP-MEG2和SHP-1抑制较弱,几乎不抑制SHP-2,而配合物1、3、5对与PTP1B高度同源的TCPTP的抑制明显强于2和4,因而2和4对PTP1B表现较强的选择性,对PTP1B抑制活性是TCPTP的7~12倍、PTP-MEG2的10~15倍、SHP-1的20~40倍,大约是SHP-2的1000倍,表明配合物的结构影响其对PTP1B的选择性。酶促动力学实验显示2和4对高度同源的PTP1B和TCPTP抑制类型不同,对PTP1B的抑制为竞争型,而对TCPTP的抑制为非竞争型,推测其选择性可能与其抑制方式有关。荧光滴定表明2和4与PTP1B和TCPTP发生了1:1结合作用。结合常数分别为1.12×10⁶、5.47×10⁵、1.19×10⁶和4.95×10⁵ L·mol^-1,表明它们与PTP1B的结合能力强于TCPTP,与它们对这两种酶的抑制能力一致。     

Meso位单取代卟啉及其配合物的合成、表征和光谱性质

设计合成了一系列新型的meso位N,N-二甲氨基苯基或N-苯基咔唑基单取代卟啉(5a~c)及其锌配合物(6a~c),用高分辨质谱、¹H NMR、紫外-可见光谱及X射线单晶衍射方法等对结构进行了表征;研究了卟啉化合物及其配合物的热稳定性及荧光性质。结果表明,这些卟啉化合物及其锌配合物在400~410 nm之间具有强的吸收且具有很好的热稳定性,荧光量子产率在0.05~0.09;另外还分析了meso位不同取代基对光谱性质的影响。     

三个二羧酸配体配位聚合物的合成、结构表征和荧光性质

以羧酸配体2,2''-（1,4-亚苯基双（亚甲基））双（硫二基）二苯甲酸（H₂L¹）和2,2''-（2,3,5,6-四甲基-1,4-亚苯基）双（亚甲基）双（硫二基）二苯甲酸（H₂L²）分别与金属盐反应,通过溶剂热方法合成了3个配位聚合物：{[Ni（L¹）（H₂O）₄]·2H₂O}_n （1）、[Zn（L¹）（DMA）₂]_n （2）和[Co（L²）（DMF）₂]_n （3）,其中DMA=N,N-二甲基乙酰胺,DMF=N,N-二甲基甲酰胺。对配合物1~3进行了单晶X射线衍射、元素分析、红外光谱、热重分析、粉末X射线衍射和固体紫外可见光谱测试和表征。单晶X射线衍射表明：3个配合物均为一维锯齿形链状结构,并通过氢键作用形成三维骨架,且配体均表现为反式构象。此外,对配合物2固态荧光性质进行了研究。     

基于(+)-二对甲基苯甲酰-D-酒石酸和铜(Ⅱ)构筑的配位聚合物的结构、热稳定性、荧光和染料吸附性质

合成了一种配位聚合物{[Cu（HDTTA）₂（DMF）（H₂O）]·DMF·H₂O}_n（1）（D-H₂DTTA=（+）-二对甲基苯甲酰-D-酒石酸,DMF=N,N-二甲基甲酰胺）。通过红外光谱、元素分析、X射线单晶衍射和粉末衍射表征了配合物1的结构。配合物1沿a轴为一维链状结构,在ab平面通过弱相互作用形成二维层状结构。热稳定性研究表明配合物1的主结构可在197℃以下稳定存在。在300 nm激发波长条件下,配体的荧光由于和Cu²⁺离子配位而猝灭。配合物1对水溶液中亚甲基蓝染料表现出良好的特异性吸附效果,作用49 min后吸附率可达81%。     

三个二羧酸配体配位聚合物的合成、结构表征和荧光性质

以羧酸配体 2,2''-(1,4-亚苯基双(亚苯基))双(硫二基)二苯甲酸(H₂L¹)和 2,2''-(2,3,5,6-四甲基-1,4-亚苯基)双(亚甲基）双(硫二基)二苯甲酸(H₂L²)分别与金属盐反应,通过溶剂热方法合成了 3个配位聚合物：{[Ni(L¹)(H₂O)₄]·2H₂O}_n (1)、[Zn(L¹)(DMA)₂]_n(2)和[Co(L²)(DMF)₂]_n (3),其中DMA=N,N-二甲基乙酰胺,DMF=N,N-二甲基甲酰胺。对配合物1~3进行了单晶X射线衍射、元素分析、红外光谱、热重分析、粉末X射线衍射和固体紫外可见光谱测试和表征。单晶X射线衍射表明：3个配合物均为一维锯齿形链状结构,并通过氢键作用形成三维骨架,且配体均表现为反式构象。此外,对配合物2固态荧光性质进行了研究。     

以N,N′-二异丁基-2,3-二胺基喹喔啉为配体的钴和锌配合物的合成、晶体结构以及性质研究(英文)

以2,3-二氯喹喔啉和异丁胺为原料,合成了N,N′-二异丁基-2,3二胺基喹喔啉(L),并合成了两个标题配合物([Co(DIDAQX)Cl2])(1,DIDAQX=N,N′-Diisobutyl-2,3-(1H,4H)-diaminoquinoxaline)和([Zn(DIDAQX)Cl2])(2)。并对其进行了红外、元素分析、单晶衍射、热重、荧光、电化学性质等性质研究。且对1做了密度泛函理论(DFT)计算。单晶结构分析表明1和2同构,都属于正交晶系,Pbca空间群,1的晶胞参数:a=1.408 2(3)nm,b=1.462 8(3)nm,c=1.797 0(4)nm;V=3.701 7(14)nm3,Z=8。2的晶胞参数:a=1.408 2(3)nm,b=1.464 8(3)nm,c=1.796 9(4)nm;V=3.706 5(14)nm3,Z=8。在配合物结构中每个金属原子以四配位的形式分别与2个Cl原子和来自配体的2个N原子配位,形成了一个扭曲的四面体结构。     

Synthesis and Properties of a New Two—Photon—absorbed Material DMAEAS

IntroductionSubstitutedstilbeneshavesignificantpotentialapplica tionssuchasfluorescencemicroscopy ,two photonphotody namictherapy ,opticalpowerlimiting ,three dimensionalstorage,andthree dimensionalmicrofabrication .1 4 Thesedyeshavestrongtendencyofintra molecularchargetransferundertheexcitedstate.Asaresult,theyusuallyexhibitlargetwo photonabsorption (TPA) ,inthemeanwhileemitstrongup convertedfluorescence .Ontheotherhand ,theirsolutionsgenerallydisplaylineartransmissionof >90 %atwavelengthof…     

以N, N’-二异丁基-2, 3-二胺基喹喔啉为配体的钴和锌配合物的合成、晶体结构以及性质研究

本文以2,3-二氯喹喔啉和异丁胺为原料,合成了N,N’-二异丁基-2,3二胺基喹喔啉（L）,并合成了两个标题配合物（[Co（DIDAQX）Cl₂]）（1,DIDAQX=N,N’-Diisobutyl-2,3-（1H,4H）-diaminoquinoxaline）和（[Zn（DIDAQX）Cl₂]）（2）。并对其进行了红外、元素分析、单晶衍射、热重、荧光、电化学性质等性质研究。且对1做了密度泛函理论（DFT）计算。单晶结构分析表明1和2同构,都属于正交晶系,Pbca空间群,1的晶胞参数：a=1.4082（3）nm,b=1.4628（3）nm,c=1.7970（4）nm;V=3.7017（14）nm³,Z=8。2的晶胞参数：a=1.4082（3）nm,b=1.4648（3）nm,c=1.7969（4）nm;V=3.7065（14）nm³,Z=8。在配合物结构中每个金属原子以四配位的形式分别与2个Cl原子和来自配体的2个N原子配位,形成了一个扭曲的四面体结构。     

Steric and electronic effects of N -coordinated NC − and NCS− on NiS2PN: synthesis,spectral and single crystal X-ray structural studies on N,N ′-di- n -butyldithiocarbamate complexes of nickel(II) with phosphorus and nitrogen donor ligands

Planar nickel(II) complexes involving N,N′-dibutyldithiocarbamate, such as [Ni(bu₂dtc)(PPh₃)(NC)] (1) and [Ni(bu₂dtc)(PPh₃)(NCS)] (2) (where bu₂dtc = N,N′-dibutyldithiocarbamate anion) have been prepared, characterized by electronic, IR and NMR spectra and their structures determined by single crystal X-ray crystallography. Cyclic voltammetric characterizations of the complexes are also reported. IR spectra of the two complexes indicate the isobidentate coordination (ν_c-s ? 1095 cm^?1 without splitting) of the dithiocarbamate moiety. The important stretching mode characteristic of the thioureide bond (ν_C–N) occurs at higher wave numbers compared to that of the parent dithiocarbamate complex [Ni(bu₂dtc)₂]. The electronic spectra of 1 and 2 show signature bands at 426 nm and 478 nm, respectively. NMR spectra show large ³¹P chemical shifts in both compounds and the most important N¹³CS₂ chemical shift appears at 204.86 ppm and 203.23 ppm for 1 and 2, respectively. The CV studies clearly show the presence of reduced electron density on the nickel ions in mixed-ligand complexes 1 and 2 compared to the parent dithiocarbamate. Single crystal X-ray structure studies show that 2 crystallizes as a new triclinic polymorph, whose molecular structure closely resembles that of the previously reported monoclinic form. Both complexes contain a planar NiS₂PN chromophore in keeping with the observed diamagnetism. In both complexes the Ni-S distances are significantly different. The thioureide C–N distances of the complexes are shorter than those observed in the parent [Ni(bu₂dtc)₂]. The two compounds allow comparison of the influence of NCS^? in place of NC^?.     

基于二苯甲酰酒石酸构筑的钴（Ⅱ）、镍（Ⅱ）配合物的合成、结构、荧光及磁性质

在室温条件下合成了2个配合物[Ni（DBTA）（DMF）（H₂O）₄]（1）和[Co（DBTA）（DMF）（H₂O）₄]（2）（D-H₂DBTA=D-（+）-二苯甲酰酒石酸,DMF=N,N-二甲基甲酰胺）,并通过元素分析、FT-IR光谱、X射线单晶及粉末衍射表征了2个配合物的结构。X射线单晶衍射结果表明,2个配合物同构,属于单斜晶系,P2₁空间群。配合物由配位键形成零维结构,再通过分子间氢键形成三维网状结构。荧光分析表明当激发波长为280 nm时,配合物1和2具有较强的荧光。尽管2个配合物同构,但表现出不同的磁性质：配合物1主要表现出Ni²⁺离子间弱的反铁磁相互作用,而配合物2则表现为Co²⁺离子的磁各向异性以及Co²⁺离子间强的反铁磁相互作用。     

Heptanuclear high-spin complex compounds based on S-donors

The precursors [Fe(III)(^SYL)Cl] (^SYLH₂) = N,N′-bis(1-hydroxy-Y-2-benzyliden)-1,6-diamino-3-thiohexane, (Y = H, 3EtO, 5Me) are high-spin (S = 5/2) complexes. The precursors are combined with [Fe(II)(CN)₆]⁴⁻ and [Co(III)(CN)₆]³⁻ to yield star-shaped heptanuclear clusters, [Fe(II)(CN–Fe(III)^SYL)₆]Cl₂ and [Co(III)(CN–Fe(III)^SYL)₆]Cl₃. The star-shaped compounds are high-spin (HS) systems at room temperature. On cooling to 20 K some of the iron(III) centers perform some HS–HS transition.     

A Zn(II) luminescent complex with a Schiff base ligand: solution,computational and solid state studies

Abstract

A new mononuclear complex of zinc(II), [Zn(HL)₂]?2DMF (H₂L = (E)-N′-((E)-(hydroxyimino)butan-2-ylidene)salicyloylhydrazide, DMF = N,N-dimethylformamide), was prepared and characterized. Single-crystal X-ray crystallography revealed a six-coordinate zinc(II) surrounded by nitrogen of the oxime function and oxygen and distal nitrogens of the acylhydrazone group. This entity also exists in solution as demonstrated by ¹H-NMR and potentiometric titrations. The computational analysis showed that the molecular orbitals involved in the main electronic transitions of the complex species in solution are centered on the ligand with negligible contribution of the metal ion. The photophysical properties of the complex were evaluated in solution and in the solid state. Luminescence studies showed that the solid has a strong emission at 550 nm with a large Stokes shift with respect to absorption. The solid state fluorescence emission is ascribed to ligand-centered and/or ligand-to-ligand charge transfer transitions, following the DFT results in solution. A comparison with a previously reported mononuclear [Zn(HL)₂] allowed the investigation of the influence of DMF molecules in the structural packing and the luminescence properties.     

Palladium(II) complexes with R2edda-derived ligands. Part V. Reaction of O,O′-diethyl-(S,S)-ethylenediamine-N,N′-di-2-(3-methyl)butanoate with K2[PdCl4]

The reaction of K₂[PdCl₄] with [(S,S)-H₂(Et)₂eddv]Cl₂ diester (O,O′-diethyl-(S,S)-ethylenediamine-N,N′-di-2-(3-methyl)butanoate) (1) resulted in [PdCl₂{(S,S)-(Et)eddv-κ² N,N′,κO}] (2) complex with one hydrolyzed ester group. The compound was characterized by spectroscopic methods and it was found that the reaction is diastereoselective (¹H and ¹³C NMR; one diastereoisomer of four possible). In addition, the structure of 2 was confirmed by X-ray diffraction analysis, indicating that the product is the (R,R)–N,N′-configured isomer. DFT calculations support the formation of one diastereoisomer of 2.     

30-Membered decanuclear manganese metallacrown

A new macrocyclic decanuclear manganese(III) 30-metallacrowns-10, [Mn₁₀(ipbmshz)₈(dmpmshz)₂(DMF)₁₀]. 4DMF (1) has been prepared by supramolecular self-assembly and characterized by X-ray crystal diffraction, where ipbmshz³⁻ is N-(4-isopropylbenzoyl)-3-methylsalicylhydrazide, dmpmshz³⁻ is N-(2,2-dimethylpropanoyl)-3-methylsalicylhydrazide. The single-crystal structure shows that a novel ring formed by the succession of ten structural moieties of the type [Mn(III)–N–N] through hydrazide N–N groups bridging the ring Mn ions. The ligand enforces the Mn³⁺ ions to form the stereochemistry of a propeller configuration with alternate…ΔΛΔΛ…-type chiral forms depending on the steric repulsions between the tail groups. The decanuclear systems measure ∼2.3 nm in diameter and ∼1.2 nm in thickness. The temperature-dependent magnetic properties have been studied and showed the presence of weakly antiferromagnetic couplings between Mn (III) ions.