Structure and Fluorescence Property of a 2D Bilayer Cd(Ⅱ) Coordination Polymer Induced by H-bonding and π-π Interaction

Solvothermal reactions of 4,4'-oxybis(benzoic acid) (H2oba) with 1,3-dipyridyl benzene (1,3-dpb) produced a two-dimensional (2D) cadmium(Ⅱ) coordination polymer {[Cd(oba)(dpb)]·H2O}n (1). The complex was characterized by elemental analysis, IR spectroscopy, and X-ray single-crystal diffraction. It crystallizes in the monoclinic system, space group C2/c with a = 13.6692(9), b = 25.9647(17), c = 8.7912(6) , α = 125.0370(10), γ = 2544.7(3)°, V = 2544.7(3) 3, C30H22N2O6Cd, Mr = 618.91, Dc =1.609 g/cm3, F(000) = 1248, μ = 0.904 mm-1 and Z = 4. The neighboring Cd(Ⅱ) ions are linked by oba2-anions and 1,3-dpb to form an infinitely 2D wavelike sheet, and two such 2D sheets are interlocked with each other by H-bonding to form a 2D → 2D structure. The adjacent two groups of interlocked structures are further linked to form a bilayer 2D supramolecular network by π-π interactions. In addition, the fluorescence property of 1 was also studied.     

C-H…O Hydrogen Bonds and π…π Interaction and the Crystal and Molecular Structures of 3-Nitro-benzylideneaniline-methyl-2’

The title compound (C14H12N2O2,Mr=240.26) crystallizes in the monoclinic system,space group P21/a with a=7.394(1),b=21.334(3),c=7.423(1)A,β=89.82(1)A°,V=1170.8(3)A3,Z=4,Dc=1.363 g/cm3,μ(MoKα)=0.93 cm-1 and F(000)=504.00.The final R and wR are 0.0440 and 0.1370 for 2153 observed reflections (I>2σ(I)),respectively.The dihedral angle between the two phenyl rings is 52.9°and that between the NO2 group and its attached ring is 3.0°.In the crystal,molecules are stacked along [100] throughπ…πinteractions.The C-H…O hydrogen bond (3.403 A,120.4°) laterally connects the stacks along [010] to form networks (001) which are further anti-parallelly connected by C-H…O(3.382 A,142.9°) andπ…πinteractions extending along [001].Also presented here is a brief study on the C-H…O hydrogen bonds in nitro-substituted benzyl-ideneanilines which can be classified into five types,namely,R12(5)R21(4),R22(8),R12(6),andR22(7),with the first three occurring more often.     

Synthesis and Structure of a Novel Macrocyclic Complex [Cd_2(phen)_4(phth)_2]·4H_2O

1 INTRODUCTION In recent years, extensively attention has been fo- cused on the design and synthesis of d10 metal- based complexes[1, 2]. A series of d10 metal-organic frame- works have been described not only because of their intriguing structures but also due to their ptential ap- plications in photoluminescent fields[3～7]. Although phthalate ligand was successfully used to design and synthesize a wide variety of metal complexes, those containing Cd(II) complex are less considered[8～…     

Synthesis and Crystal Structure of (1-Naphthyl){[3- (2,6-dibromo-4-methylphenylimino)methyl]-5-chloro- 2-hydroxy-benzaldehyde}(triphenylphosphine) Nickel(II) Triphenylphosphine

1INTRODUCTION Over the past decades,olefin oligomerization and polymerization based on late transition metal catalysts have been the most exciting developments in the area of organometallic chemistry and polymer science[1～3].In this broad context,neutral nickel(II)complexes have attracted much attention for their less sensitivity to protonic solvents and polar mon-mers.The most typical one is the SHOP-type cata-lyst[4～6],which contains an anionic[P,O]chelate ring and shows high activ…     

Extended Network via π…π Interaction and Hydrogen Bond Linkages of 1D Copper(II) Coordination Polymer: Synthesis, Crystal Structure and Characterization of [Cu(4,4′-bpy)(2-pzc)- (H_2O)]ClO_4·H_2O (2-pzc=2-pyrazine-5-carboxylate; 4,4′-bpy

Introduction　　Functionalcoordinationpolymersareofgreatinterestduetotheirpotentialapplicationsinmanyareas ,suchasmi croporosity ,electricalconductivity ,molecularmagnetism ,linearopticalbehaviororcatalysis .1 6 Considerableefforthasbeenfocusedonthesupramolecularnetworksassembledbycovalent,hydrogenbonds ,π…πinteractionorotherweakin teractionsowingtotheirfascinatingstructuraldiversityandpotentialapplicationindesignofporousmaterialswithnovelinclusionorreactivitypropertiesandsupramoleculardevi…     

Preparation and Crystal Structure of 3-（2-Hydroxyphenyl） -6- （4-nitrophenyl）-7H- 1,2,4-triazolo[3,4-b][1, 3,4]thiadiazine

Introduction3,6- Disubstituted- 7H- 1 ,2 ,4- triazolo[3,4- b][1 ,3,4]thiadiazines are amongst the various hete-rocycles that received considerable attention duringthe last two decades as potential biologically activeagents.This kind of N- bridged heterocycles hasbeen reported to possess the wide spectrum of bio-logical properties,such as antimicrobial[1] ,an-tibacterial,antifungal[2 ] ,antiinflammatory[3 ] ,di-uretic[4] ,anthelmintic,and analgesic properties[5] .They can be also used as plant…     

Crystal Structure of 6,6＇-（3,3＇,5,5＇-Tetra-tert-butylbiphenyl-2,2＇-diyl）bis（oxy）didibenzo-[d,f]-[1,3,2]dioxaphosphepine

The title complex,6,6-(3,3,5,5-tetra-tert-butylbiphenyl-2,2-diyl)bis(oxy)di-di-benzo[d,f]-[1,3,2] dioxaphosphepine(C52H56O6P2·C6H14,Mr = 881.99),was synthesized,and the structure was determined by X-ray single-crystal diffraction.The crystal belongs to the orthor-hombic system,space group Pbca,with a = 11.8400(13),b = 25.381(3),c = 34.243(4) ,V = 10290(2)3,Z = 8,Dc = 1.139 g/cm3,μ = 0.131 mm-1,T = 152(2) K,F(000) = 3768,the final R = 0.0773 and wR = 0.1820 for 9721 observed reflections with I > 2σ(I).The neighboring two molecules form a dimmer by face-to-face π…π interactions.     

[Na(DB18-C-6)(H_2O)_2][Na(DB18-C-6)(SCN)_2]: Two-Dimensional Network Complex Assembled by π-π Stacking Interactions, Hydrogen Bonds and Electrostatic Interactions

ＩｎｔｒｏｄｕｃｔｉｏｎＩｔｈａｓｂｅｅｎｗｉｄｅｌｙａｇｒｅｅｄｔｈａｔｗｅａｋｉｎｔｅｒａｃｔｉｏｎｓｃｏｕｌｄｐｌａｙｖｉｔａｌｒｏｌｅｓｉｎｔｈｅｃｏｎｆｏｒｍａｔｉｏｎａｌｓｔａｂｉｌｉｔｙｏｆａｗｉｄｅｖａｒｉｅｔｙｏｆｃｈｅｍｉｃａｌｓｙｓｔｅｍｓ ,ｗｉｔｈａｐｐｌｉｃａｔｉｏｎｓｒａｎｇ ｉｎｇｆｒｏｍｍａｔｅｒｉａｌｓｓｃｉｅｎｃｅｔｏｍｏｌｅｃｕｌａｒｂｉｏｌｏｇｙ .Ｉｎｐａｒｔｉｃ ｕｌａｒ ,π πｓｔａｃｋｉｎｇａｎｄｈｙｄｒｏｇｅｎｂｏｎｄｉｎｇｉｎｔｅｒａｃｔｉｏｎｓｈ…     

Synthesis and crystal structure of (E)-[(2-cyclohexenyl) vinyl]triaryltin

(E)-[(2-Cyclohexenyl)vinyl]triaryltin (aryl=phenyl, p-tolyl) were synthesized and characterized by elemental analysis, IR, 1H NMR spectroscopy. The crystal structure of (E)-[(2-cyclohexenyl)vinyl]triphenyltin was also determined by the X-ray diffraction. Experiments show that this compound has the conjugated system, which makes it have possible bioactivity and anti-tumor activity.     

Synthesis and Structural Characterization of Gd(Ⅱ) Coordination Polymer [Gd2(μ-phth)3(b-pd)(H2O)5]n

A new Gd(Ⅱ) complex [Gd2(μ-phth)3(b-pd)(H2O)5]n (phth = o-phthalato, b-pd = N,N- bipyridine) has been synthesized by the reaction of GdO2 with o-phthalate, H2O and 2,2′-bipyridine. The crystal structure has been determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P with a = 11.82920(10), b = 13.53550(10), c = 13.7381(2)(A), α = 88.99, β = 66.9120(10), γ = 66.2370(10)°, V = 1826.02(3)(A)3, Dc = 1.915 g/cm3, C34H30N2O17Gd2, Mr = 1053.10, F(000) = 1024, μ = 3.680 mm-1, Z = 2, R = 0.0612 and wR = 0.1320 for 6259 observed reflections (I > 2σ(I)). In the title complex, the Gd(II) ions are bridged by o-phthalate ligands in a bidentate mode, producing a 1D infi- nite chain structure. Each eight-coordinated Gd(Ⅱ) center is coordinated by eight oxygen atoms from phth to give a distorted dodecahedral geometry, and each nine-coordinated Gd(Ⅱ) center is coordi- nated by two N atoms from b-pd and seven oxygen atoms from phth to give a distorted geometry of capped square antiprism. The chains are linked by π-π interactions and hydrogen bonds between oxy- gen atoms of carboxylate groups and H2O molecules and hydrogen atoms of H2O, b-pd and o-phth molecules, forming an unusual three-dimensional coordination polymer.     

Preparation and Crystal Structure of Bis（2－thenoyltrifluoroacetone）Copper（Ⅱ）

ＰｒｅｐａｒａｔｉｏｎａｎｄＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆＢｉｓ（２－ｔｈｅｎｏｙｌｔｒｉｆｌｕｏｒｏａｃｅｔｏｎｅ）Ｃｏｐｐｅｒ（Ⅱ）ＷａｎｇＤｏｎｇ－Ｍｅｉ；ＹａｎｇＲｕｉ－Ｎａ；ＨｕＹｉ－Ｍｉｎ；ＪｉｎＤｏｕ－Ｍａｎ（ＨｅｎａｎＩｎｓｔｉ...     

Synthesis and Crystal Structure of a Dinuclear Cu(Ⅱ) Complex [Cu(C_(13)H_9N_2O)Cl]_2·(CH_3CN)_2 with Ligand 2-Benzimidazol

A new dinuclear copper complex, [Cu(C13H9N2O)Cl]2·(CH3CN)2 (C30H24Cl2Cu2N6O2), has been synthesized and characterized by X-ray structure determination. It crystallizes in the tricli- nic system, space group P1, with a = 7.6677(14), b = 9.2375(17), c = 11.227(2) , α = 81.338(3), β = 88.173(4), γ = 66.199(3)o, V = 718.9(2) 3, Z = 1, Mr = 698.53, F(000) = 354, Dc = 1.613 g/cm3, μ(MoKα) = 1.705 mm-1, the final R = 0.0645 and wR = 0.1364 for 2474 unique reflections with 1809 observed ones (I > 2σ(I)). In the title complex, each copper(II) atom is located at the center of a distorted tetrahedron consisting of four coordinate atoms (one nitrogen atom, two oxygen anions, and one chlorine atom). Two copper(II) atoms are bridged by two oxygen anions (O(1) and O(1a)) of two phenolates to form a Cu(II)–Cu(II) binuclear entity, and the distance between two copper(II) atoms is 3.0144(15) .     

Molecular Structure of 1- (Diisopropyl )amino-2-(p-methyl )phenyl-3-methyl-phosphetane 1-oxided

lINTR0DUCTIONThechemistryofstablephospheniumcati0n[Rl-P-R2j hasbeenextensivelyknowntl-3).Wereportedsynthesesandreactions0fthephospheniumcati0nsfeatur-ingwithanS-P-Nlinkage.(4-8)Recentlywefoundthatphospheniumion[i-Pr2N-P-Clj [AlC'j-canregiOselectivelyinsertintophenylcyclopropaneringattwocycliccarbon-carbonb0ndsadjacenttophenylgr0uptogivel-(diisopropyl)amin0-2-(p-methyl)phenyl-3-methyl-phosphetanel-oxide(1).Inordertodisclosetherelativesterelchemistry,itssinglecrystalwasobtainedfromn-he…     

Synthesis and Crystal Structure of catena-Poly[bis-(benzimidazole)cobalt(II) μ-Phthalato]

1 INTRODUCTION Chemists have recognized that intermolecular inter- actions are the basis of functional properties for most molecular assembles, and detailed understan- ding of non-covalent chemistry is therefore funda- mental to interpreting and predicting the relation- ship between structure and function. Among intermo- lecular interactions, the π-π stacking between aro- matic rings is correlated with the electron transfer process in some biological systems[1], and the nature of π-π s…     

Self-assembly of Amphiphilic Linear Diblock Rod-Coil Molecules by Hydrogen Bond and π-π Stacking Interactions

Aromatic amphiphilic molecules(1) consisting of three biphenyl groups linked together with ether bonds as a rigid rod segment and poly(ethylene oxide) with the number of repeating units of 17 as a coil segment were synthesized, and their self-assembly behavior in the bulk state and aqueous solution was investigated. In bulk, molecules 1 self-assembled into 1-D lamellar structure in the solid state or smectic A phase in the liquid crystalline phase via the cooperative effects of ?-? stacking, micro-phase separation and hydrogen bond interactions. In dilute aqueous solutions, molecules 1 were observed to selfassemble into cylindrical micelles owned uniform diameter and length of hundreds of nanometers.     

Crystal Structure of Di[bis(diphenylphosphino)propane]Copper(Ⅰ) Perchlorate Complex

1INTRODUCT1oNIthasbeenwellknownthatthereactionofcopper(E)saltswithditertiaryphosphinesorarsinesisoftenaconvenientroutetocopper(I)analogues.8-dimethylarsinoquinolinee,3-methylthiopropyldimethylarsineand(o-diphenylarsi-nophenyl)diphenylphosphinesulphideallonlyyieldcopper(I)complexesofthiskindofligandsfromreactioninvolvingcopper(I)salts.Insimilarmanner,copper(I)nitratecomplexesofstoichiometryCu(dppm)(NO,),Cu2(dppe)3(NO,)2,Cu-(dppe),(NO,),andCu(dppe)(NO,)havebeenprepared.ltappearsthatthe…     

C—H…Cl Hydrogen Bond and π-π Interaction Based Two 3D Supramolecular Architectures of Cu(II) and Co(II) Complexes with Chiral 1,2-Bis(benzimidazol-2-yl) ethane Ligand Containing 2D Grids

合成了两个新的配合物CuLCl₂•2EtOH(1) 和CoLCl₂ (2) [L是( S , S )－1,2－二N－甲基苯并咪唑－1,2－二甲氧基－乙烷],并通过单晶X衍射确定它们的结构。配合物1中,L作为三齿[N, N, O]配体,而配合物2 中,L作为二齿[N, N]配体。这两个配合物共同的结构特点都是通过分子内氢键形成2维的格子结构,然后通过分子间的C－H···Cl型氢键和π–π堆积作用形成3维结构。     

Synthesis and Structural Characterization of Co(Ⅱ) Coordination Polymer [Co(-phth)(imi_)2]_n

1 INTRODUCTION The polymeric metal complexes with extended structures are of great interest because of their useful chemical or physical properties[1]. Due to the noticeable fact that the aromatic polycarboxylate can provide versatile coordination mode and the non-coplanar structure of the carboxylate groups and the benzene rings, a lot of efforts in this field have been particularly directed to the preparation of aromatic polycarboxylate (such as phthalate, tere- phthalate and isophthal…     

Synthesis and Structure of a Zinc(II) Complex:[Zn(Pybta)·Cl_2]_n

The title compound, [Zn(Pybta)Cl2]n (Pybta = 1-(2-pyridylmethyl)benzontriazole), has a zigzag chain structure. It crystallizes in the monoclinic system, space group P21/c with a = 9.0103(11), b = 17.0276(18), c = 9.2288(11) , β = 101.309(6)o, Mr = 346.51, V = 1388.4(3) 3, Z = 4, Dc = 1.658 g/cm3, F(000) = 696, μ = 2.143 mm1, the final R = 0.0492 and wR = 0.1236 for 2545 observed reflections with I > 2σ(I). The Zn atom is four-coordinated by two N and two Cl atoms, forming a slightly distorted tetrahedral geometry. Each zigzag chain links its adjacent symmetry- related equivalents via multiple π-π interactions, which are not frequently observed in the previously reported architectures.     

Synthesis and Crystal Structure of a Three-dimensional Manganese(Ⅱ)Complex (tataH)2[Mn(pydc)2]·4H2O(tata= 2,4,6-Triamino-1,3,4,-triazine,pydcH2= Pyridine-2,6-dicarboxylic Acid)

A manganese(Ⅱ) complex (tataH)2[Mn(pydc)2]·4H2O (C20H28MnN14O12, Mr = 711.50, tata = 2,4,6-triamino-1,3,5-triazine, pydcH2 = pyridine-2,6-dicarboxylic acid) has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1, with a = 9.9847(3), b = 10.9813(3), c = 15.2616(5) (A), α =101.5310(10), β = 90.2610(10), γ = 116.4600(10)°, V = 1459.44(8) A3, Z = 2, Dc = 1.619 g/cm3, μ = 0.539 mm-1, F(000) = 734, the final R = 0.0292 and wR = 0.0745. In the crystal the MnⅡ atom is six-coordinated by four carbonyl oxygen atoms and two pyridine nitrogen atoms from two tridentate H-bonded tetramer. The molecules are packed in a three-dimensional framework structure by the combination of O-H…O,N-H…O and N-H…N hydrogen bonds between (tataH) ,[Mn(pydc)2]2- and crystal water.