Synthesis and Crystal Structure of a Palladium(Ⅱ)Coordination Polymer [Na2Pd(2,6-pydc)2(H2O)6]n

A novel coordination polymer [Na2Pd(2,6-pydc)2(H2O)6]n (2,6-H2pyde = 2,6-pyri-dinedicarboxylie acid) has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the monoclinie system, space group P21/c,with a = 11.962(2), b = 6.5552(13), c = 12.673(3) A, β = 91.72(3)°, V= 993.3(3) A3,Z = 2, Mr=590.68, Dc = 1.975 g/cm3,μ=1.059 mm-1, F(000) = 592, the final R = 0.0211 and wR = 0.0454. In the crystal the Pd(Ⅱ) ion adopts a distorted four-coordinated square-planar geometry and bonds to two bidentate 2,6-pyridinedicarboxylate molecules through caronyl oxygen and pyridine nitrogen atoms. The title complex exhibits a novel three-dimensional network structure.     

Synthesis and Crystal Structure of a Three-dimensional Manganese(Ⅱ)Complex Constructed via Covalent and Hydrogen Bonds

1INTRODUCTIONCrystalengineeringofone-,two-andthree-dimensionalsupramolecularcomplexesiscurrentlyofgreatinterestowingtothefascinatingstructuraldiversityandpotentialapplicationsinmaterials,suchaselectricconductivity,magnetism,host-guestapplication,molecularrecognitionandcatalysis[1,2].Severaltypesofinteractions,suchascoordinationcovalentbond,hydrogenbond,p-pstackingandelectrostaticinteractionscanbeusedtoconstructextendedsupramolecularframeworks[3~6],butcoordinationbondingandhydrogenbondingin…     

Synthesis and Crystal Structure of a Manganese(Ⅱ) Complex with 2-(4'-Chlorine-benzoyl)-benzoic Acid and 1,10-Phenanthroline

A new metal-organic complex Mn2(cbba)4(phen)2 (Hcbba = 2-(4'-chlorine-benzoyl)-benzoic acid, phen = 1,10-phenanthroline) 1 has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, elemental analyses and IR spectroscopy. The compound crystallizes in orthorhombic, space group Pbcn with a = 12.154(5), b = 18.166(7), c =31.197(13) (A°), V = 6887(5) (A°)3, C80H48C14Mn2N4O12, Mr= 1508.90, Dc = 1.455 g/cm3, μ(MoKa) =0.591 mm-1, F(000) = 3080, Z = 4, the final R = 0.0408 and wR = 0.0873 for 4033 observed reflections (I > 2σ(I)). In the crystal structure, the manganese atom is six-coordinated with four carboxylate oxygen atoms from three different cbba ligands and two nitrogen atoms from phen ligands, showing a distorted octahedral geometry. Furthermore, it exhibits a 3D supramolecular network through π-π interactions.     

Synthesis and Crystal Structure of a Three-dimensional Manganese(II) Complex (tataH)_2[Mn(pydc)_2]·4H_2O (tata = 2,4,6-Triamino-1,3,5-triazine, pydcH_2 = 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) , α = 101.5310(10), β = 90.2610(10), γ = 116.4600(10)°, V = 1459.44(8) 3, 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 pydc ligands to furnish a distorted octahedral geometry. The complex shows the A…D…D’…A’ 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.     

Hydrothermal Synthesis, Crystal Structure and Electrochemical Properties of Complex Mn2（phen）2（p-CBA）4（H2O）

One novel complex Mn2(phen)2(p-CBA)4(H2O) has been hydrothermally syn- thesized from p-chlorobenzoic acid (p-CBA), 1,10-phenanthroline (phen) and anhydrous man- ganese(Ⅱ) sulfate and then characterized. Crystal data for this complex: monoclinic, space group C2/c, with a = 2.3416(3), b = 1.5604(2), c =1.5605(2) nm, β = 121.048(2)o, V = 4.8849(12) nm3, Dc = 1.510 g/cm3, Mr = 555.26, Z = 8, μ = 0.798 mm-1, F(000) = 2256, GOOF = 1.032, the final R = 0.0393 and wR = 0.0816. The crystal structure shows that two neighboring manganese(Ⅱ ) ions are linked together by two bridge-chelating p-chlorobenzoic groups and one bridging water molecule, forming a cage structure with the Mn–Mn bond distance of 0.3512 nm. Each manganese(Ⅱ ) ion is coordinated by two nitrogen atoms of one 1,10-phenanthroline molecule and four oxygen atoms from three p-chlorobenzoic acid anions and one water molecule, giving a distorted octahedral coordination geometry. The cyclic voltammetric behavior of the complex was also investigated.     

Hydrothermal Synthesis and Crystal Structure of a New Manganese(Ⅱ) Complex with 2,4-Pyridine-dicarboxylic Acid and 2,2'-Bipyridine Ligands

A new metal-organic complex [Mn_2(PDC)_2(bipy)_2(H_2O)_2] (H_2PDC=2,4-pyridinedicarboxylic acid,bipy=2,2'-bipyridine) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,TG and single-crystal X-ray diffraction. The compound crystallizes in triclinic,space group P~(-)1 with α=7.376(3),b=9.990(4),c=11.950(5)(A),α=75.217(5),β=78.052(5),γ=70.655(5)°,V=796.0(5)(A)~3,C_(34)H_(26)Mn_2N_(6O)O_(10),M_r=788.49,D_c= 1.645 g/cm~3,μ(MoKa) = 0.866 mm~(-1),F(000)=235,Z=1,the final R=0.0425 and wR=0.0700 for 1971 observed reflections (Ⅰ > 2σ(Ⅰ)). In the crystal structure,the manganese atom is six-coordinated by two carboxylate oxygen atoms from two different PDC ligands,one aqua ligand,and three nitrogen atoms from 2,2'-bipy and PDC ligands,giving a distorted octahedral geometry. It exhibits a three-dimensional supramolecular network defined by O-H…O hydrogen-bonding interactions.     

Synthesis, Crystal Structure and Electrochemical Properties of a One-dimensional Chain Coordination Polymer [Mn（phen）（2,4,6-TMBA）2（H2O）]n

A one-dimensional chain-like coordination polymer [Mn(phen)(2,4,6-TMBA)2(H2O)]n has been synthesized from 2,4,6-trimethylbenzoic acid, 1,10-phenanthroline and anhydrous manga- nese(Ⅱ ) sulfate and then characterized. Crystal data for this complex: tetragonal, space group I41, a = 2.05643(16), b = 2.05643(16), c = 1.3939(2) nm, V = 5.8946(11) nm3, Mr = 579.54, Z = 8, Dc = 1.306 g/cm3, μ(MoKα) = 0.490 mm-1, F(000) = 2424, S = 0.985, the final R = 0.0411 and wR = 0.0950. The Flack factor is -0.01(2). The crystal structure shows that two neighboring man- ganese(Ⅱ ) ions are linked together by one bridge-chelating 2,4,6-trimethylbenzoic group, forming a one-dimensional chain structure. The manganese(Ⅱ ) ion is coordinated with two nitrogen atoms of one 1,10-phenanthroline, three oxygen atoms from three 2,4,6-trimethylbenzoic acids and one water oxygen atom, giving a distorted octahedral coordination geometry. The cyclic voltametric behavior of the complex was also investigated.     

Hydrothermal Synthesis, Crystal Structure and Magnetic Properties of a Novel Zero-dimensional Manganese（Ⅱ） Complex with 2,2′-Diphenic Acid and 1,10-Phenanthroline Ligands

A novel metal-organic coordination polymer [Mn3(2,2′-dipha)3(phen)6]n·3nH2O (2,2′-dipha = 2,2′-diphenic acid, phen = 1,10-phenanthroline) 1 has been hydrothermally synthe- sized and structurally characterized by single-crystal X-ray diffraction, elemental analyses, IR spectroscopy, and magnetic susceptibility measurements. The crystal crystallizes in triclinic, space group P1 with a = 16.921(5), b = 18.307(5), c = 18.450(5) , α = 113.369(5), β = 108.529(5), γ = 102.984(5)o, V = 4553(2) 3, C114H72Mn3N12O14.25, Mr = 2002.66, Dc = 1.461 g/cm3, μ(MoKα) = 0.488 mm1, the final F(000) = 2058, Z = 2, R = 0.0491 and wR = 0.0980 for 9087 observed reflections (I > 2σ(I)). In the crystal structure, the manganese atom is six-coordinated with two carboxylate oxygen atoms from different carboxylate groups of the same dipha and four nitrogen atoms from two different phen ligands, showing a slightly distorted octahedral geometry. Fur- thermore, it exhibits a zero-dimensional structure with dipha-Mn-phen- as building units. Variable- temperature magnetic measure shows an overall anti-ferromagnetic behavior for compound 1.     

Synthesis, Crystal Structure and Electrochemical Properties of [Ni(phen)_3]·(m-nitrobenzoic acid)_2·(H_2O)

A new nickel(II) coordination complex [Ni(phen)3]·(m-nitrobenzoic acid)2·(H2O) was synthesized by self-assembly of m-nitrobenzoic acid, 1,10-phenanthroline and nickelous per- chlorate. It crystallizes in the monoclinic system, space group C2/c, with a = 2.4596(6), b = 1.2124(3), c = 1.9824(5) nm, β = 97.088(5)o, V = 5.866(3) nm3, Dc = 1.474 g/cm3, Z = 4, Mr = 1301.82, μ(MoKα) = 0.417 mm-1 F(000) = 2688, R = 0.0493 and wR = 0.1025. Structural deter- mination indicates that the nickel(II) ion is coordinated with six nitrogen atoms from three phens, giving a distorted octahedral coordination geometry. The cyclic voltametric analysis shows that the electron transfer in the electrode reaction is irreversible.     

Synthesis and Crystal Structure of [Zn(FcCOO)2(2,2′-bipy)(H2O)]2·H2O

A novel complex [Zn(FcCOO)2(2,2′-bipy)(H2O)]2·H2O (Fc = (η5-C5H5)Fe(η5-C5H4), 2,2′-bipy = 2,2′-bipyridine) has been synthesized and characterized by elemental analysis, IR and X-ray diffraction. It crystallizes in monoclinic system, space group P21/c with a = 6.8187(4), b = 21.7155(13), c = 19.7411(12) (A), α = 90, β = 97.7420(10), γ = 90°, C64H58Fe4Zn2N4O11, Mr = 1413.28, V = 2896.4(3) (A)3, Dc = 1.620 g/cm3, Z = 2, F(000) = 1444, μ(MoKα) = 1.857 mm-1, R = 0.0523 and wR = 0.0982 for 3219 observed reflections (I ＞ 2σ(I)). Structural analysis shows that the zinc atom is coordinated with three oxygen atoms from two ferrocenemonocarboxylates and one water molecule together with two nitrogen atoms from 2,2′-bipyridine, giving a distorted square-pyramidal coordination geometry. The complex molecules are linked to form an infinite one-dimensional chain by both intermolecular hydrogen bonds and π-π stacking interactions of the bipyridine rings.     

Synthesis and Crystal Structure of Palladium(Ⅱ) Complex with 2,2’-Bipyridine-3,3’-dicarboxylic Acid

1 INTRODUCTION As the first inorganic antitumor complex[1], cis- platin (cis-DDP) possesses prominent therapeutic ef- fect for encephaloma, lung cancer and several kinds of genital system tumors[2]. However, cis-DDP has toxic side-effect to a larger extent. Especially due to its damage to kidney, the dose is strictly limited[3]. Therefore, other Pt(II) complexes including carbon- platin were developed[4]. Pd(II) complex is struc- turally similar to Pt(II) complex, so the antitumor …     

Hydrothermal Synthesis,Crystal Structure and Electrochemical Properties of Complex [Cd(phen)_3]·(ClO_4)_2·(p-MBA)_2·(H_2O)_2

One new cadmium complex [Cd(phen)3]·(ClO4)2·(p-MBA)2·(H2O)2 has been hydro-thermally synthesized by reacting p-methylbenzoic acid (p-MBA),1,10-phenanthroline (phen) and cadmium perchlorate. It crystallizes in the triclinic system,space group P1,with a=1.2809(3),b= 1.3431(3),c=1.3734(3) nm,α=84.259(4),β=71.603(3),γ=74.424(3)o,V=2.1594(8) nm3,Dc= 1.532 g/cm3,Z=2,F(000)=1008,μ=0.697 mm-1,R=0.0646 and wR=0.1648. The crystal structure shows that the cadmium ion is coordinated with six nitrogen atoms from three 1,10-phenanthroline molecules,forming a distorted octahedral coordination geometry. The result of electrochemical property analysis shows that the electron transfer in the electrode reaction is irreversible.     

Synthesis and Crystal Structure of a Three-dimensional Manganese（Ⅱ） Complex （tataH）2[Mn（pydc）2]·4H2O （tata = 2,4,6-Trlamino-1,3,5-trlazine,pydcH2 =Pyridine-2,6-dicarboxylic Acid）

A manganese（Ⅱ） complex （tataH）2[Mn（pydc）2]·4H2O （C20H28MBN14O12, 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, a = 101.5310（10）, β = 90.2610（10）, γ = 116.4600（ 10）% V = 1459.44（8）A^3, Z = 2, Dc = 1.619 g/cm^3,μ = 0.539 mm^-1, F（000） = 734, the final R = 0.0292 and wR = 0.0745. In the crystal the Mnn atom is six-coordinated by four carbonyl oxygen atoms and two pyridine nitrogen atoms from two tridentate pydc ligands to furnish a distorted octahedral geometry. The complex shows the A…D…D＇…A＇ 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.     

Crystal Structure of Binuclear Manganese(Ⅲ) Complex with Schiff-base Ligand,〔Mn_2(C_(22)H_(22)N_2O_2)_2(EtOH)_2 (bipy)〕(ClO_4)_2

1INTRODUCTIONThecoordinationchemistryofmanganeseinthe 2, 3and 4oxidationstatesisreceivingconsiderableattentionduetothebio1ogicalimportanceoftheseions(1i.Anattractivesystemformode1ingthestructureandreactivityofsomemanganoenzymesisbinuclearMn(M)complexescontainingpolydentateSchiffbaseligands.Bothphotochemicalwateroxidationtogeneratedioxygen"'andacid-pro-motedhydrogenperoxideproductiont3ihavebeenreportedforsuchdimer.Wereportherethestructureofthetitlecomplex.2EXPERIMENTAL2.lSynthesisof…     

Synthesis, Crystal Structure and Properties of a Dinuclear Cobalt（II） Complex [Co2（a-furacrylato）4（Phen）2（H2O）]·C2H5OH

A dinuclear cobalt(Ⅱ) complex [Co2(α-furacrylato)4(Phen)2(H2O)]·C2H5OH has been synthesized with α-furacrylic acid and 1,10-phenanthroline as the ligands, and its crystal structure was determined. The crystal is of monoclinic system, space group C2/c with a=1.07388(8), b=2.4300(2), c=1.86708(14)nm, β=104.3830(10)o, V=4.719.4(7) nm3 , Dc=1.503 g/cm3 , Z=2, F(000)=2196, GOOF=1.053, the final R=0.0343 and wR=0.0883. The crystal structure shows that two neighboring cobalt(Ⅱ) ions are linked by the bridging coordination of two α-furacrylic acid anions and one water molecule, and their end positions are respectively coordinated with two 1,10-phenanthroline molecules and two α-furacrylic acid anions, forming a dinuclear structure. Both cobalt(Ⅱ) ions adopt hexa-coordinated distorted octahedral geometry. The electrochemical and fluorescence properties of the title complex are also discussed.     

Hydrothermal Synthesis and Crystal Structure of a New One-dimensional Nickel(Ⅱ) Complex with 2-Pyridinecarboxyic Acid and 4,4′-Bipyridine Ligands

A new metal-organic coordination polymer [Ni[(2-pya)2(4,4′-bipy)]n·6nH2O (2-pya = 2-pyridinecarboxylic acid, 4,4′-bipy = 4,4′-pyridine) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The complex crystallizes in tetragonal, space group I41/a with a = b = 22.5642(19), c = 10.7118(18), V = 5453.8(11) 3, C22H28N4NiO10, Mr = 567.19, Dc = 1.382 g/cm3, μ(MoKα) = 0.769 mm-1, F(000) = 2368, Z = 8, the final R = 0.0572 and wR = 0.1254 for 1401 observed reflections (I > 2σ(I)). It exhibits a one-dimensional chain-like structure by mixed ligands of 2-pyridinedicarboxylic acid and 4,4′-pyridine.     

Synthesis and Crystal Structure of [Cis-1,10phenanthroline-palladium(Ⅱ)(THF)_2]dinitrate (THF = Tetrahydrofuran)

1 INTRODUCTION The coordination chemistry of Pd(Ⅱ) com- plexes with didentate nitrogen coordination ligands has been extensively studied for a few decades[1]. Pd(Ⅱ) trends to bond to the didentate nitrogen in cis-mode and such complexes have potential usage in the emerging area of self-assembly[2]. We will report herein the synthesis and crystal structure of a cis-coordinated mononuclear Pd(Ⅱ) complex with one 1,10-phenanthroline and two THF as ligands, 1. 2 EXPERIMENTAL 2. …     

Synthesis and Crystal Structure of a Cyano-bridged Bimetallic Complex:[NdFe(CN)_6(DMF)_4(H_2O)_3]H_2O

1 INTRODUCTION In recent years, cyano-bridged heterometallic coordination compounds have inspired remarkable attention due to their rich and interesting structures and magnetic behaviors. However, these studies were mainly focused on the transition metals. Although several unusual cyanide bridging lanthanide-transition metal complexes have been re- ported[1～6], this field continuously possesses tre- mendous researching potentialities. As regardsPrussian Blue lanthanide complex, divers…     

Synthesis, Crystal Structure and Magnetic Properties of a One-dimensional Loop-like Iron(Ⅱ) Complex:[Fe(Haip)2(H2O)2]n (Haip =5-Ammoniumisophthalato)

An iron(Ⅱ) coordination polymer, Fe(Haip)2(H2O)2n (1, Haip = 5-ammoniumiso-phthalato), has been hydro/solvothermally synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, infrared spectrum and magnetic measurement. Compound 1 crystalizes in monoclinic, space group P2/c with a = 6.9874(14), b = 9.960(2), c = 12.894(4), β = 117.47(2)°, Fe(C8H6NO4)2(H2O)2 , Mr = 452.16, V = 796.2(3)3 , Z = 2, D c = 1.886 g·cm-3 , μ = 1.017 mm-1 , F(000) = 464.0, 2.71<θ<28.42°, R = 0.0307, wR = 0.0840 and S = 1.005. Single-crystal X-ray diffraction analysis reveals that 1 features an infinite one-dimensional loop-like chain structure and Haip ligand in 1 is of zwitterionic form. Magnetic measurement results show the dominated ferromagnetic interactions among FeⅡ atoms.