Synthesis and Structure of a Novel Tetranuclear Erbium(Ⅲ) Complex with L-Proline(HPro) [Er4(HPro)4(Pro)2·(μ3-OH)4(H2O)7](ClO4)6·6H2O

The title complex was synthesized in an aqueous solution and its crystal structure was determined by X-ray diffraction. The crystal is rhombohedral, space group R3 with a=1.947 0(3) nm, b=1.947 0(3) nm, c=1.768 3(3) nm, α=90°, β=90°, γ=120°, V=5.805(2) nm3, Z=3, the final R value is 0.051 2. The complex contains a novel tetranuclear cation with four Er3+ ions connected by four μ3-OH ions and six bridging carboxyl groups. Each erbium ion is coordinated by three μ3-OH, three carboxylic oxygen atoms from three L-proline, and two or one oxygen atoms from water molecules.     

Synthesis and Crystal Structure of Novel Dimer of Bismuth( Ⅲ ) Complex with Dithiotetrahydropyrrolocarbamate:[Bi (S2CNC4H8) 2 (NO3) ]2

A novel dimer of the bismuth ( Ⅲ ) complex with dithiotetrahydropyrroloearbamate, [Bi (S2CNC4H8)2 ·(NO3)]2, was synthesized and the crystal structure was determined by X-ray single crystal diffraction. The crystal belongs to a monoclinic system with space group P21/n, a=0. 64718(13) nm, b=2. 6738(6) nm, c=1. 0423(2) nm, β=106. 384(3)°, Z=4, V=1. 730(3) nm3, Dc=2.163 g/cm3, μ=10. 682 mm-1, F(000)=1072, R= 0. 0329, wR=0. 0659. The structure shows a distorted pentagonal bipyramidal configuration with the seven-coordinated central Bi atom. In the crystal, the molecular packing in the unit cell reveals that the two adjacent molecules are symmetrically linked each other in the dimer by virtue of a couple of Bi-S interaction.     

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…     

Hydrothermal Synthesis, Crystal Structure and Magnetic Property of a Novel Pentanuclear Copper(Ⅱ) Complex: [Cu5(SIP)2(HSIP)2(H2O)18](H2O)5

The pentanuclear complex, [Cu5(SIP)2(HSIP)2(H2O)18](H2O)5 (H3SIP=5-sulfoi-sophthalic acid), has been synthesized by the hydrothermal reaction of CuCl2 with NaH2SIP at 160 ℃, and characterized by single-crystal X-ray diffraction and IR spectrum. The crystal of the complex crystallizes in a trielinic system, space group P1, with a = 7.0018(5), b = 11.9725(8), c = 19.0424(13) A, α = 78.8540(10), β = 85.1710(10),γ = 83.6080(10)~, V = 1553.24(19) A3, Z = 1, C32H60O51S4Cu5, Mr= 1706.74, Dc= 1.825 g/cm3,μ = 1.937 mm-1, F(000) = 869, the final R = 0.0709 and wR = 0.1503 for 4235 observed reflections with I > 2σ(I). The five Cu2+ ions are connected by two symmetry-related tridentate SIP3- ligands and charge-balanced by two monodentate HSIP2- ligands, giving a discrete pentanuclear structure. The pentanuclear copper molecules are linked by hydrogen bonds to form a three-dimensional supramolecular structure. The temperature-dependent magnetic susceptibility data revealed weak ferromagnetic magnetic interactions between the Cu2+ ions.     

Hydrothermal Synthesis and Crystal Structure of Zinc(Ⅱ) Dinicotinate Complex [Zn(nic)2(H2O)4](nic=nicotinic acid):A Three-dimensional Hydrogen-bond Network

Introduction Nicotinic acid and its transition-metal comple-xes have become increasingly important due to their potential applications as cosmetics or medicines with antitumor, antibacterial and antifungal activities, and the activity in the maintenance of normal glucose metabolism[1-3], etc. A major research effort has been made to generate such materials and to study their biological activity[4-9]. But few of the previous works have directed towards the structure investigation of these metal complexes[6-9]. So, in this report we aim at testing the effect of hydrothermal synthesis on the formation of the crystal structures of crystalline [Zn(nic)2(H2O)4 ](nic=nicotinic acid).     

Solvothermal Synthesis, Crystal Structure and Electrochemical Property of Complex [Co(p-MBA)2(2,2'-bipy)(H2O)]·(H2O)

One novel complex [Co(p-MBA)2(2,2'-bipy)(H2O)]·(H2O) has been synthesized by the reaction of p-methylbenzoic acid with 2,2'-bipyridine in the solvent mixture of water and methanol. It crystallizes in triclinic, space group P-1 with a=0.70479(14), b=1.1211(2), c=1.6718(3) nm, α=103.806(3), β=90.795(3), γ=104.207(3)°, V=1.2399(4) nm3, Mr=512.41, Dc=1.373 g/cm3, Z=2, F(000)=532, μ=0.733 mm-1, R=0.0432 and wR=0.0957. The crystal structural analysis shows that the cobalt atom is coordinated with three oxygen atoms from two p-methylbenzoic acids and one water molecule and two nitrogen atoms from one 2,2'-bipyridine,forming a distorted square-pyramidal coordination geometry. The cyclic voltammetry behavior of the complex is also reported.     

Synthesis and Crystal Structure of Complex [Pb(qina)_2(DMSO)]·H_2O

A novel complex [Pb(qina)2(DMSO)]·H2O was synthesized,of which qina-is the quinaldic acid radical and DMSO the dimethyl sulfoxide. Elemental analysis,IR spectra,and X-ray single-crystal diffraction were carried out to determine the composition and crystal structure. This complex belongs to monoclinic system,space group P121/n1,with a=7.1553(17),b=17.543(2),c=17.306(2) ,β=91.671(4)°,C22H20N2O6PbS,Mr=647.65,Z=4,V=2171.5(6) 3,Dc=1.981 g/cm3,μ=7.908 mm-1,F(000)=1248,–9≤h≤6,–23≤k≤19,–22≤l≤22,R=0.0221 and wR= 0.0488. Weak coordinate bond is formed between oxygen atom in DMSO and Pb(Ⅱ ) . There are also weak interactions,such as π-π interaction,hydrogen bonds and so on,among the complex molecules.     

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～…     

Hydrothermal Synthesis,Crystal Structure and Luminescence Property of a New Binuclear Cage-like Samarium(Ⅲ) Complex Sm2(C7H4ClCOO)6(C(12)H8N2)2(H2O)2

A new binuclear cage-like samarium(Ⅲ) complex Sm2(C7H4ClCOO)6(C(12)H8N2)2(H2O)2(1) with samarium(Ⅲ) nitrate, m-chlorobenzoic acid and 1,10-phenanthroline(phen) was synthesized. It crystallizes in the triclinic space group P1, with a = 8.0217(2), b = 12.9037(4), c = 15.3764(5) ?, α = 85.373(3)o, β = 84.396(3)o, γ = 80.443(3)o, V = 1558.64(8) ?~3, Dc = 1.636 g/cm^3, Z = 2, F(000) = 806, the final GOOF = 1.051, R = 0.0754 and wR = 0.1388. The whole molecule consists of two samarium ions bridged by four m-chlorobenzoic acid anions. The Sm(III) ion is coordinated by eight atoms to give a distorted square antiprism coordination geometry. The TG analysis and fluorescent properties of 1 were studied.     

Synthesis and Crystal Structure of a Nitronyl Nitroxide Complex {[Zn(NIT4Py)(fum)(H2O)2]·H2}n

The title compound {[Zn(NIT4Py)(fum)(H2O)2]·H2O}n, where N1T4Py=2-(4'-pyridinyl)-4,4,5,5-tetra-methylimidazoline-l-oxyl-3-oxide and rum=fumarate, has been prepared and structurally characterized by X-ray diffraction. It crystallizes in triclinic, space group P1 with a =6.9533(9), b=9.805(1), c=15.248(2)A, a=94.608(2), β=92.328(2),γ=105.840(2)°,C16H24N3O9Zn, Mr=467.75, V=994.8(2) A3, Z=2, Dc=1.562 g/cm3,μ(MoKa)=1.289 mm-1,F(000)=486, the final R=0.0243 and wR=0.0622 for 3505 independent reflections with Rint=0.0125. The Zn(Ⅱ) adopts a distorted five-coordinate triangle bipyramidal geometry. The basic framework structure of the complex is a 1-D chain. The intrachain hydrogen bonds are helpful to stabilize the 1-D chain structure. Furthermore, the chains are connected by O-H…O hydrogen bonds to give a 2-D double-layer network.     

Synthesis and Structure of anti-Configuration Complex [Cu(tssb)2]·2[(H3O)Cl]·4H2O

The title complex [Cu(tssb)2]·2[(H3O)Cl]·4H2O (C18H34Cl2CuN2O14S2) (tssb = taurine salicylaldehyde Schiff base) has been synthesized by the reaction of taurine salicylaldehyde Schiff base (tssb) and copper acetate in water-ethanol. Its single-crystal structure was determined by X-ray diffraction method. The crystal structure belongs to triclinic, space group P with a = 0.7407(1), b = 1.3329(3), c = 1.5736(3)nm, α = 103.800(4), β = 95.030(4), γ = 104.416(4)°, Mr = 701.06, V = 1.4433(5) nm3, Z = 2, Dc = 1.613 g/cm3, μ = 1.153 mm-1 and F(000) = 726. The compound is an infinitely expanding three-dimensional network connected with hydrogen bonds. The Cu(Ⅱ) atom is coordinated by two nitrogen and two oxygen atoms to form a distorted planar coordination compound which adopts anti-configuration because two sulfonic acid groups are positioned diagonally on a plane.     

Synthesis, Crystal Structure and Characterization of α-(1-Benzimidazolyl)-hypnone Cobalt(Ⅱ) Complex:[CoCl(C7H5N2CH2COPh)4]Br

The crystal structure of [CoCl(C7H5N2CH2COPh)4]Br has been determined by means of X-ray crystallography. The molecular structure consists of a discrete [CoCl(C7H5N2CH2COPh)4] cation and one Br- anion. In the [CoCl(C7H5N2CH2COPh)4] cation, the coordination geometry of the central Co atom is square-pyramidal with four tertiary N atoms of benzimidazole from four α-(benzimidazol-1-yl)-hypnone ligands in the basal position and one chloride anion in the apical position. In the solid state, [CoCl(C7H5N2CH2COPh)4] and Br- anion possess intermolecular and intramolecular interactions, which stabilize the crystal structure. The characterization of the title compound were also carried out by using elemeutal analysis, FTIR, UV spectrometries and TG-DSC.     

Hydrothermal Synthesis, Crystal Structure and Electrochemical Properties of Complex [Cd(phen)3]·(ClO4)2·(p-MBA)2·(H2O)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 P, 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,Crystal Structure and Magnetochemistry of a Novel Trinuclear Iron Complex [Fe 3 O(ClC 6 H 4 CO 2 ) 6 (H 2 O) 2.5 (C 2 H 5 OH) 0.5 ]ClO 4 ·0.5H 2 O

A novel trinuclear iron complex was synthesized in ethanol solution, [Fe 3 O(ClC 6 H 4 CO 2 ) 6 (H 2 O) 2.5 (C 2 H 5 OH) 0.5 ]ClO 4 ·0.5H 2 O. The title complex crystallizes in the tetragonal system, space group $P_{4_1}$     

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.     

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 [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.