Synthesis, Characterization and Crystal Structure of an Inorganic-organic Composite Metatungstate: [Co(4,4''-bipy)2(H2O)4](4,4''-H2bipy)2[H2W12O40]·5.5H2O

A novel hybrid compound [Co(4,4'-bipy)2(H2O)4](4,4'- H2bipy)2[H2W12O40]·5.5H2Ohas been synthesized from an acidified aqueous solution and characterized by elemental and thermal analyses, IR and UV spectroscopy, and single-crystal X-ray structure determination. Structure analysis indicates that the title compound is of monoclinic, space group C2/c, with a = 21.315(9), b = 15.303 (7), c = 24.139(10) (A), β = 105.170(5)o, V = 7599(6) (A)3, Mr = 3706.99, Z = 4, F(000) = 6616, Dc = 3.231, μ = 18.395 mm-1, R = 0.0652 and wR = 0.1594. X-ray crystallographic study shows that the title compound consists of one [Co(4,4'-bipy)2(H2O)4]2 cation, two diprotonated 4,4'-bipyridine molecules, 5.5 water molecules of crystallization, and one metatungstate polyoxoanion [H2W12O40]6-, which approaches an effective Td point symmetry. TG-DTA analysis indicates that the framework of the metatungstate polyoxoanion is collapsed at 587.0 ℃.     

Hydrothermal Synthesis and Structure Characterization of a Novel 4,4''-Bipyridine Bridging Dumbbell-like Dimeric Pentamolybdate

A 4, 4'-bipyridine bridging dumbbell-like dimeric pentamolybdate [4, 4'-H2bipy]3[4,4'-Hbipy]2[(Mo5O17)2(4,4'-bipy)] has been synthesized by hydrothermal synthesis and characterized by elemental analysis, IR spectrum, UV spectrum, TG and X-ray crystallography. The title compound crystallizes in triclinic, space group P(-1) with a = 10.578(2), b = 11.047(2), c = 16.576(3) (A), α = 79.86(3), β = 75.34(3), γ = 79.40(3)°, C60H58Mo1oN12O34, Mr = 2450.58, V = 1824.8(6) (A)3, Z = 1, Dc = 2.230 g/cm3, F(000) = 1194, μ = 1.757 mm-1, the final R = 0.0252 and wR = 0.0559 for 5506 observed reflections with I ＞ 2σ(Ⅰ). The structural analysis indicates that the title compound contains a novel polyanion [(Mo5O17)2(4,4'-bipy)]8-, in which two identical (Mo5O17)4- anions are buttressed by a 4,4'-bipyridine molecule through Mo-N bond.     

Synthesis and Crystal Structure of a One-dimensional Silver(I) Coordination Polymer with 4,4'-Bipyridine

The title compound, {[Ag2(bipy)2(H2O)2]·pydc·2H2O}n (bipy=4,4'-bipyridine, pydc= pyridine-3,5-dicarboxylate), has been synthesized by the reaction of Ag2O with pydc and bipy in CH3OH solution. It crystallizes in the monoclinic system, space group C2/c with a=21.419(8), b=7.515(3), c=18.070(7), β=108.273(6)°, Mr=765.27, V=2761.9(17)3, Z=4, Dc=1.840 g/cm3, F(000)= 1528, μ=1.478 mm-1, the final R=0.0307 and wR=0.0681. The structure determined demonstrated that the Ag(I) is three-coordinated by two nitrogen atoms from bipy and one water molecule, forming a one-dimensional coordination polymer [Ag2(bipy)2(H2O)2]n2n+, which is further linked to generate a two-dimensional layer structure via Ag…Ag attractions.     

Synthesis and Crystal Structure of a One-dimensional Silver(Ⅰ) Coordination Polymer with 4,4'-Bipyridine

The title compound,{[Ag2(bipy)2(H2O2]·pydc·2H2O}n(bipy=4,4'-bipyridine,pydc=pyridine-3,5-dicarboxylate),has been synthesized by the reaction of Ag2O with pydc and bipy in CH3OH solution.It crystallizes in the monoclinic system,space group C2/c with a=21.419(8),b=7.515(3),c=18.070(7)(A),β=108.273(6)°,Mr=765.27,V=2761.9(17)(A)3,Z=4,Dc=1.840 g/cm3,F(000)=1528,μ=1.478 mm-1,the final R=0.0307 and wR=0.0681.The structure determined demonstrated that the Ag(Ⅰ)is three-coordinated by two nitrogen atoms from bipy and one water molecule,forming a one-dimensional coordination polymer[Ag2(bipy)2(H2O)2]n2n ,which is further linked to generate a two-dimensional layer structure via Ag…Ag attractions.     

Hydrothermal Synthesis and Structure of a Copper(II) Complex, [Cu(4,4''''bpy)(H_2O)_3]SO_42H_2O

1 INTRODUCTION Recently, there has been increasing interest in crystal engineering of supramolecular architectures by means of covalent bonding, hydrogen bonding or other weak intermolecular interactions[1, 2], which reflect their potential applications in host-guest che- mistry, catalysis and function materials[3～5]. The construction of such materials is mainly provided by geometry of transition metal extending through rigid ligands. The oxidation state and coordination predisposition …     

A Novel （3,4）-Connected Self-penetrating Net, [Cd_3（OABDC）_2（bipy）_2（H_2O）_2]_n

A new luminescent Cd(Ⅱ) compound, [Cd3(OABDC)2(bipy)2(H2O)2]n (1, H3OABDC = 5-oxyacetateisophthalic acid, bipy = 4,4'-bipyridine), has been prepared by the assembly of Cd(Ⅱ) salt with the mixed ligands of H3OABDC and 4,4'-bipy under hydrothermal conditions. The crystal structure is of monoclinic, space group P2/n with a = 13.6730(5), b = 10.1265(3), c = 15.9752(4) , β = 103.061(3)o, V = 2154.70(11) 3, C40H34Cd3N4O18, Mr = 1195.94, Z = 2, Dc = 1.843 g/cm3, F(000) = 1180, μ = 1.549 mm-1, the final R = 0.0409 and wR = 0.1291 for 2746 observed reflections (I > 2σ(I)). Single-crystal X-ray structural analysis reveals that compound 1 features a self-penetrating two-dimensional (2D) layered structure. According to topology analysis, this 2D framework can be characterized as a (3,4)-connected (6.72)2 (62.8)2 (73.8.102) net that has never been reported before. Finally, these 2D layers are further linked by intermolecular hydrogen bonds and π…π interactions to form a three-dimensional (3D) supramolecular framework. Moreover, Compound 1 exhibits strong blue photoluminescence at room temperature.     

Synthesis and Crystal Structur of (4,4''-H2bipy)[CdBr4]·H2O

The title compound (4,4'-H2bipy)[CdBr4]·H2O 1 has been synthesized via hydrothermal reaction and characterized by X-ray diffraction. The crystal belongs to monoelinic,space group P21/c with a=8.260(3), b=23.926(7), c=9.774(2) (A), β=106.777(9)°,C10H12Br4CdN2O, Mr=608.26, V=1849.4(9)(A)3, Z=4, Dc=2.185 g/cm3, S=1.005, μ(MoKα)=9.814 mm-1, F(000)=1128, R=0.0646 and wR=0.0989. The crystal structure analysis of 1reveals that the title compound features an isolated structure, based on discrete 4,4'-H2bipy moieties and lattice water molecules which are linked by hydrogen bonds together with tetrahedral cadmium atoms terminally coordinated by four bromine atoms.     

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

A new metal-organic coordination polymer [Co(2-pya)2(4,4'-bipy)]2n·[(4,4'- bipy)0.5· H2O]2n(2-pya = 2-pyridinecarboxylic acid, 4,4'-bipy = 4,4'-bipyridine) 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 = 22.719(2), c = 10.710(2) A, V = 5527.8(14) A3, C54H46N10Co2O10, Mr = 1112.87, Dc = 1.337 g/cm3,μ(MoKα) = 0.665 mm-1, F(000) = 2296, Z = 4, the final R = 0.0633 and wR = 0.1096 for 1261 observed reflections (I ＞ 2σ(I)). It exhibits a one-dimensional chain-like structure constructed by mixed ligands of 2-pyridinedicarboxylic acid and 4,4'-bipyridine.     

Hydrothermal Synthesis and Crystal Structure of a Nickel（Ⅱ） Polymer with a One-dimensional Chain Structure：[Ni（cbba）_2（bipy）（H_2O）_2]_n

A metal-organic coordination polymer formulated as [Ni(cbba) 2 (bipy)(H 2 O) 2 ] n 1 (H 2 cbba=2-(4-chlorine-benzoyl)benzoic acid,bipy=4,4-bipyridine) has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,TG and single-crystal X-ray diffraction.The title compound crystallizes in the triclinic system,space group P1 with a=5.4550(4),b=11.4099(8),c=15.3135(11),α=68.7680(10),β=81.3470(10),γ=79.3450(10)o,V=869.48(11) 3,C 38 H 28 Cl 2 N 2 NiO 8,M r=770.23,D c=1.471 g/cm 3,μ(MoKα)=0.768 mm 1,F(000)=396,Z=1,the final R=0.0456 and wR=0.1171 for 2477 observed reflections (I > 2σ(Ⅰ)).It exhibits a one-dimensional chain-like structure.     

Crystal Structure and Magnetic Property of a Two-dimensional Manganese Compound [Mn(PhCOO)_2(4,4'-bipyridine)]_n

A new two-dimensional polymeric manganese compound [Mn(PhCOO)2(4,4'-bi-pyridine)]n 1 has been prepared and structurally characterized by X-ray diffraction. The complex crystallizes in space group Pbcn with a = 18.7158(2), b = 11.6919(3), c = 9.4799(2) , V = 2074.42(7) 3, Z = 4, Mr = 453.34, Dc = 1.452 g/cm3, μ = 0.670 mm-1 and F(000) = 932. The final refinement gave R = 0.0458 and wR = 0.1439 for 1358 observed reflections with I > 2σ(I). The complex consists of repeating units of Mn(PhCOO)2(4,4'-bipyridine). Each Mn center is six-coordinated by four carboxylate O atoms of four benzoate anions and two pyridyl N atoms from bipy ligands to furnish a slightly distorted octahedral geometry. The two adjacent Mn atoms are connected by a pair of μ1,3-carboxylate groups to form infinite chains, which are further interlinked by bipy to complete a 2D grid network. The magnetic property of the polymeric complex has also been investigated.     

A novel organic-inorganic hybrid based on an 8-electron-reduced Keggin polymolybdate capped by tetrahedral, trigonal bipyramidal, and octahedral zinc: synthesis and crystal structure of (CH3NH3)(H2bipy)[Zn4(bipy)3(H2O)2MoV8MoVI4O36)(PO4)].4H2O

Hydrothermal reaction of H(3)PO(3), CH(3)NH(2), zinc(II) acetate, 4,4'-bipyridine (bipy), and (NH(4))(6)Mo(7)O(24).4H(2)O at 180 degrees C led to a novel organic-inorganic layered hybrid, [CH(3)NH(3)][H(2)bipy][Zn(4)(bipy)(3)(H(2)O)(2)Mo(V)(8)Mo(VI)O(36)(PO(4))].4H(2)O (1). Its structure was established by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P2(1)/c with cell parameters of a = 17.3032(2), b = 17.8113(3), and c = 23.4597 (4) A, beta = 106.410(1) degrees, V = 6935.6(2) A(3), and Z = 4. The structure of compound 1 features a novel 2D layer built from the 8e-reduced tetracapped Keggin [Zn(4)Mo(12)O(36)(PO(4))](3)(-) anions, which are further interconnected by bridging bipy ligands. The four zinc(II) ions are in tetrahedral, trigonal bipyramidal, and octahedral coordination geometries, respectively.     

Synthesis and Crystal Structure ofa Bipy Bridged Binuclear Cu^Ⅱ Complex Containing Aminomethanesulfonic Acid [Cu2（Sams）2（Bipy）（H2O）2]·（H2O）

The title complex [Cu2（Sams）2（H2O）2（bipy）]·（H2O） 1 （H2Sams = N-（2-hydroxybenzy） aminomethanesulfonic acid, bipy = 4,4′-bipyridine） has been synthesized by the reaction of Cu- （CH3COO）2·H2O, nESams and 4,4′-bipyridine in aqueous methanol. It was characterized by IR, elemental analysis, thermogravimetric analysis （TGA） and X-ray diffraction analysis. Complex 1 crystallizes in monoclinic, space group P21/n with a= 10.9533（17）, b = 8.3408（13）, c = 16.714（3） A^°, β = 101.295（4）°, V = 1494.3（4） A^°3 and Z = 2. The asymmetric unit is comprised of a tridentate Schiff base Sams^2- anionic ligand, a 4,4′-bipyddine and two coordinated water molecules, thus forming a binuclear copper（Ⅱ） complex. The coordination environment at Cu^Ⅱ center is described as a slightly distorted square pyramidal geometry. Via intermolecular hydrogen bonds C（10）-H（10）…O（3） and C（13）- H（13）…O（3）, an infinite supramolecular chain is yielded. A number of intermolecular hydrogen bonds greatly contribute to the stabilization of the solid-state structure for 1.     

Synthesis, Structure and Fluorescent Pr.operty of a Novel 2-D Sheet Inorganicorganic Hybrid Cadmium Polymer [CdBr2（bpdo）]n

A novel 2-D sheet inorganic-organic hybrid cadmium polymer,[CdBr2(bpdo)]n (bpdo=N,N'-O,O-4,4'-bipyridine) has been hydrothermally synthesized and characterized by elemental analysis,IR and single-crystal X-ray diffraction. The crystal crystallizes in monoclinic,space group C2/c,with a=16.336(3),b=3.9904(5),c=18.479(3),β=91.640(6)°,Mr= 460.40,V=1204.1(3)3,Z=4,Dc=2.540 g/cm3,μ=8.439 mm-1,F(000)=864,R=0.0314 and wR=0.0733 for 1069 observed reflections (I > 2σ(I)). X-ray diffraction reveals that the title compound consists of the 2-D inorganic-organic hybrid sheet constructed from [CdBr2]n chains and bpdo bridges in the packing motif of…ABAB….The title compound exhibits intense blue photoluminescence in the solid state at room temperature.     

Synthesis and Crystal Structur of (4,4′-H_2bipy)[CdBr_4]·H_2O

The title compound (4,4′-H2bipy)[CdBr4]·H2O 1 has been synthesized via hydrothermal reaction and characterized by X-ray diffraction. The crystal belongs to monoclinic,space group P21/c with a=8.260(3),b=23.926(7),c=9.774(2),β=106.777(9)o,C10H12Br4CdN2O,Mr=608.26,V=1849.4(9)3,Z=4,Dc=2.185 g/cm3,S=1.005,μ(MoKα) =9.814 mm–1,F(000)=1128,R=0.0646 and wR=0.0989. The crystal structure analysis of 1 reveals that the title compound features an isolated structure,based on discrete 4,4′-H2bipy moieties and lattice water molecules which are linked by hydrogen bonds together with tetra-hedral cadmium atoms terminally coordinated by four bromine atoms.     

Synthesis and Crystal Structure of a New Dinuclear Copper(Ⅱ) Polymer: [Cu2(bipy)2(Hbtc)2(H2O)2]·(H2O)1/2

A new dinuclear copper(Ⅱ) polymer [Cu2(bipy)2(Hbtc)2(H2O)2]·(H2O)1/2 1 (bipy=2,2'-bipyridine, H3btc = benzene-1,3,5-tricarboxylic acid) was obtained by the hydrothermal single-crystal X-ray diffraction analysis and identified using elemental analysis and IR spectrum.The title complex crystallizes in monoclinic system, space group P21/c with a = 7.2880(5), b =18.4778(13), c = 13.5465(10)(A), β = 95.9580(10)°, C19H14.50CuN2O7.25, Mr = 450.37, V= 1814.4(2)(A)3, Z=4, Dc = 1.649 g/cm3, μ = 1.253 mm-1, F(000) = 918, Rint = 0.0185, the final R = 0.0271and wR = 0.0710 for 2773 observed reflections (I＞2σ(I)). The study results reveal that a pair of distorted square-pyramidal Cu2+ ions are interlinked by bis-monodentate bridging Hbtc2- ligands to constitute a 16-membered ring.     

配位聚合物[Mn(4，4′-bpy)1.5(H2O)3](ClO4)·(4，4′-bpy)(L)·H2O的水热合成和晶体结构

The title compound, [Mn(4,4′-bpy)_1.5(H₂O)₃](ClO₄)·(4,4′-bpy)(L)·H₂O(1), where L=2,4,6-trimethylbenzoic acid, was synthesized and its crystal structure was determined by X-ray diffraction analysis. The crystal is of triclinic, space group P1 with a=2.929 9(6) nm, b=1.036 4(2) nm, c=8.222 0(1) nm, α=105.300(2)°, β=97.495(2)°, γ=91.118(2)°, V=1.884 0(4) nm³, Z=2, M_r=780.10, D_c=1.375 g·cm^-3, μ=0.483 mm^-1, F(000)=812, R=0.055 4, wR=0.135 2. The Mn atoms are octahedrally coordinated by three N atoms of three 4,4′-bipyridine ligands and three O atoms of water. The complex shows a one-dimensional chain structure bridged by water and 4,4′-bipyridine molecules. CCDC: 615707.     

[4,4′-bpyH_2]_5H_2[α-P_2W_(18)O_(62)]_2·4H_2O的合成与结构表征

利用水热方法合成了一种基于双Dawson多阴离子和质子化的4,4′-联吡啶阳离子构筑的化合物[4,4′-bpyH2]5H2[α-P2W18O62]2·4H2O,并经IR光谱、元素分析、热重分析和X射线单晶衍射等测试技术进行了表征.标题化合物属于三斜晶系,P墿空间群,晶胞参数:a=1.35373(5),b=2.24256(13),c=2.73282(11)nm,α=79.890(13),β=77.568(8),γ=80.349(11)°,V=7.9029(6)nm3,Z=2,Dc=4.031g/cm3,GOOF=1.049,R1=0.0674,wR2=0.1434.结构分析结果表明,标题化合物分子由5个质子化的4,4′-联吡啶阳离子、2个H+离子、2个饱和Dawson结构多阴离子[P2W18O62]6-和4个结晶水分子组成.     

Crystal Structure and Magnetic Property of a Two-dimensional Manganese Compound [Mn（PhCOO）2（4,4＇-bipyridine）]n

A new two-dimensional polymeric manganese compound [Mn(PhCOO)2(4,4'-bipyridine)]n 1 has been prepared and structurally characterized by X-ray diffraction. The complex crystallizes in space group Pbcn with a = 18.7158(2), b = 11.6919(3), c = 9.4799(2)(A), V = 2074.42(7)(A)3, Z = 4, Mr = 453.34, Dc = 1.452 g/cm3, μ = 0.670 mm-1 and F(000) = 932. The final refinement gave R = 0.0458 and wR = 0.1439 for 1358 observed reflections with Ⅰ＞ 2σ(Ⅰ). The complex consists of repeating units of Mn(PhCOO)2(4,4'-bipyridine). Each Mn center is sixcoordinated by four carboxylate O atoms of four benzoate anions and two pyridyl N atoms from bipy ligands to furnish a slightly distorted octahedral geometry. The two adjacent Mn atoms are connected by a pair of μ1,3-carboxylate groups to form infinite chains, which are further interlinked by bipy to complete a 2D grid network. The magnetic property of the polymeric complex has also been investigated.     

Monomeric oxovanadium(IV) compounds of the general formula cis-[V(IV)(=O)(X)(L(NN))(2)](+/0) [X = OH(-), Cl(-), SO(4)(2)(-) and L(NN) = 2,2'-bipyridine (bipy) or 4,4'-disubstituted bipy

Reaction of [V(IV)OCl(2)(THF)(2)] in aqueous solution with 2 equiv of AgBF(4) or AgSbF(6) and then with 2 equiv of 2,2'-bipyridine (bipy), 4,4'-di-tert-butyl-2,2'-bipyridine (4,4'-dtbipy), or 4,4'-di-methyl-2,2'-bipyridine (4,4'-dmbipy) affords compounds of the general formula cis-[V(IV)O(OH)(L(NN))(2)]Y [where L(NN) = bipy, Y = BF(4)(-) (1), L(NN) = 4,4'-dtbipy, Y = BF(4)(-) (2.1.2H(2)O), L(NN) = 4,4'-dmbipy, Y = BF(4)(-) (3.2H(2)O), and L(NN) = 4,4'-dtbipy, Y = SbF(6)(-) (4)]. Sequential addition of 1 equiv of Ba(ClO(4))(2) and then of 2 equiv of bipy to an aqueous solution containing 1 equiv of V(IV)OSO(4).5H(2)O yields cis-[V(IV)O(OH)(bipy)(2)]ClO(4) (5). The monomeric compounds 1-5 contain the cis-[V(IV)O(OH)](+) structural unit. Reaction of 1 equiv of V(IV)OSO(4).5H(2)O in water and of 1 equiv of [V(IV)OCl(2)(THF)(2)] in ethanol with 2 equiv of bipy gives the compounds cis-[V(IV)O(OSO(3))(bipy)(2)].CH(3)OH.1.5H(2)O (6.CH(3)OH.1.5H(2)O) and cis-[V(IV)OCl(bipy)(2)]Cl (7), respectively, while reaction of 1 equiv of [V(IV)OCl(2)(THF)(2)] in CH(2)Cl(2) with 2 equiv of 4,4'-dtbipy gives the compound cis-[V(IV)OCl(4,4'-dtbipy)(2)]Cl.0.5CH(2)Cl(2) (8.0.5CH(2)Cl(2)). Compounds cis-[V(IV)O(BF(4))(4,4'-dtbipy)(2)]BF(4) (9), cis-[V(IV)O(BF(4))(4,4'-dmbipy)(2)]BF(4) (10), and cis-[V(IV)O(SbF(6))(4,4'-dtbipy)(2)]SbF(6) (11) were synthesized by sequential addition of 2 equiv of 4,4'-dtbipy or 4,4'-dmbipy and 2 equiv of AgBF(4) or AgSbF(6) to a dichloromethane solution containing 1 equiv of [V(IV)OCl(2)(THF)(2)]. The crystal structures of 2.1.2H(2)O, 6.CH(3)OH.1.5H(2)O, and 8.0.5CH(2)Cl(2) were demonstrated by X-ray diffraction analysis. Crystal data are as follows: Compound 2.1.2H(2)O crystallizes in the orthorhombic space group Pbca with (at 298 K) a = 21.62(1) A, b = 13.33(1) A, c = 27.25(2) A, V = 7851(2) A(3), Z = 8. Compound 6.CH(3)OH.1.5H(2)O crystallizes in the monoclinic space group P2(1)/a with (at 298 K) a = 12.581(4) A, b = 14.204(5) A, c = 14.613(6) A, beta = 114.88(1) degrees, V = 2369(1), Z = 4. Compound 8.0.5CH(2)Cl(2) crystallizes in the orthorhombic space group Pca2(1) with (at 298 K) a = 23.072(2) A, b = 24.176(2) A, c = 13.676(1) A, V = 7628(2) A(3), Z = 8 with two crystallographically independent molecules per asymmetric unit. In addition to the synthesis and crystallographic studies, we report the optical, infrared, magnetic, conductivity, and CW EPR properties of these oxovanadium(IV) compounds as well as theoretical studies on [V(IV)O(bipy)(2)](2+) and [V(IV)OX(bipy)(2)](+/0) species (X = OH(-), SO(4)(2)(-), Cl(-)).     

Synthesis, Structure and Photoluminescence of(CH3-4, 4'-H2bipy)-(HgCl4)with CH3-4, 4'-H2bipy Generated in Situ

A novel viologen(4,4'bipyridinium)-based complex(CH3-4,4'-H2bipy)(HgCl4)(1),in which the CH3-4,4'-H2bipy(MQ2+)was generated in situ,has been synthesized via hydrothermal reaction and structurally characterized.Complex 1 crystallizes in the space group P21/c of monoclinic system with four formula units in a cell:a = 8.1848(6),b = 21.809(2),c = 9.0285(6)(A),β =.107.377(1)°,V= 1538.0(2)(A)3,C11H11Cl4HgN2,Mr = 513.61,Dc = 2.218 g/cm3,S = 1.009,μ(MoKα)= 10.685 mm-1,F(000)= 956,R = 0.0360 and wR = 0.0812.The crystal structure analysis reveals that the title complex features an isolated structure based on a CH3-4,4'-H2bipy moiety and a mercury atom terminally bound by four chlorine atoms.Photoluminescence investigation reveals a strong emission in blue region,which may originate from π→π* charge-transfer interaction of the CH3-4,4'-H2bipy moiety.