共查询到20条相似文献,搜索用时 156 毫秒
1.
Robert T. Stibrany 《Journal of chemical crystallography》2009,39(10):719-722
Abstract Two structures containing pseudo-tetrahedral Cu(II)N2Cl2 coordination complexes are reported. The first molecular structure (A) of the compound, 1,1′bis(1-ethylbenzimidazol-2-yl)propane
copper(II) dichloride (triEtBBIM)Cu(II)Cl2, 1, is reported. The complex crystallized in the triclinic space group P-1 with a = 8.616(3) ?, b = 9.302(3) ?, c = 14.314(4) ?, α = 85.613(6)°, β = 85.170(6)°, γ = 66.117(6)° and V = 1044.1(5) ?3 with Z = 2. The second structure (B) contains 1 and (3,3′bis(1-ethylbenzimidazol-2-yl)pentane) copper(II) dichloride (tetEtBBIM)Cu(II)Cl2, 2, both of which, cocrystallize in an equal molar ratio with a nitromethane solvate molecule. The complex crystallized in the
monoclinic space group P21/c with a = 18.876(4) ?, b = 14.975(3) ?, c = 18.344(4) ?, β = 116.75(3)°, and V = 4630.3(16) ?3 with Z = 4. The cocrystallization of such discrete complexes has been coined a chemical Janus.
Graphical Abstract The title complexes contain pseudo-tetrahedral Cu(II)N2Cl2 coordination. One of the structures is the result of an unusual cocrystallization, in which two different discrete Cu(II)
molecules cocrystallize in an equimolar ratio with a nitromethane solvate molecule.
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2.
Ivan Halasz Michaela Horvat Tomislav Biljan Ernest Meštrović 《Journal of chemical crystallography》2008,38(10):793-800
Abstract Adducts of cadmium(II) dibenzoylmethate, Cd(dbm)2X2 (X = DMSO, H2O) were synthesized and analyzed by thermogravimetric analysis (TGA), differential-scanning calorimetry (DSC), hot-stage microscopy
(HSM), single crystal X-ray diffraction, FTIR and Raman spectroscopy, and elemental analysis. Products obtained by thermal
decomposition of the two Cd(II) complexes in oxygen, were used for quantitative analysis of cadmium in the adduct molecules.
Single-crystal X-ray diffraction analysis of the DMSO adduct revealed that it has cis configuration. The DMSO adduct crystallizes in P21/a space group, a = 17.2494(6) ?, b = 8.3251(4) ?, c = 22.2746(9) ?, β = 93.836(3)°, V = 3191.53(7) ?3, Z = 4.
Graphical abstract
Structural, Spectroscopic and Thermal Characterisation of bis (dibenzoylmethanato)Cd(II) Adducts With Dimethylsulfoxide and
Water
Ivan Halasz, Michaela Horvat, Tomislav Biljan, Ernest Meštrović
Two adducts of bis(dibenzoylmethanato)Cd(II), Cd(dbm)2X2 (X = DMSO, H2O) have been synthesized and characterized.
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3.
Wesley H. Monillas Tyler C. Bazzoli Glenn P. A. Yap Klaus H. Theopold 《Journal of chemical crystallography》2010,40(1):67-71
Abstract
The new ligand 2,4-N,N′-bis(napthylamino)-pent-2-ene (Lnapth) (1) has been synthesized and crystallizes in space group P212121 with crystal cell parameters a = 8.196(3) ?, b = 9.119(3) ?, c = 25.746(10) ?, V = 1924.3(12) ?3 and Z = 4. The complexes bis[2,4-pentane-N,N′-bis(napthyl)ketiminato] chromium(II) (2), bis[2,4-pentane-N,N′-bis(isopropylphenyl)ketiminato] chromium(II) (3), and bis[2,4-pentane-N,N′-bis(tertbutylphenyl)ketiminato] chromium(II) (4) were synthesized and structurally characterized. Complex 2, the first complex reported with a bis(napthyl) β-diketiminate ligand, crystallizes in space group P − 1 with crystal cell parameters a = 12.0824(15) ?, b = 12.2462(16) ?, c = 14.8975(19) ?, α = 87.035(2)°, β = 80.615(2)°, γ = 62.756(2)°, V = 1932.9(4) ?3 and Z = 2. Complex 3 crystallizes in space group P21/n with crystal cell parameters a = 13.088(3) ?, b = 22.222(5) ?, c = 14.206(3) ?, β = 102.310(4)°, V = 4036.6(17) ?3 and Z = 4. Complex 4 crystallizes in space group P21/n with crystal cell parameters a = 20.831(6) ?, b = 11.575(4) ?, c = 21.373(7) ?, β = 107.241(5)°, V = 4922(3) ?3 and Z = 4. The degree of twist between the ligand planes is dependent on the steric bulk of the ligand. 相似文献4.
Abstract
A hexafluorophosphate salt of ruthenium(II) bis(4′-(1H-imidazol-2-yl)-2,2′:6′,2″-terpyridine) complex was synthesized. It crystallizes in the monoclinic space group C21/c with unit cell parameters, a = 18.5878(15) ?, b = 15.9546(11) ?, c = 16.1418(12) ?, β = 106.721(3)°, V = 4584.6(6) ?3 and Z = 4. The bond lengths, bond angles and torsional angles of hexafluorophosphate salt of the [Ru(itpy)2]2+ cation show significant change from the nitrate salt of the same cation. Thermogravimetric analysis and differential scanning calorimetry confirm the loss of solvents of crystallization between 100 and 200 °C. 相似文献5.
Abstract
Assembly of orotic acid (2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid, H3dtpc) and Cd(OAc)2·2H2O gave rise to two complexes [Cd2(H2dtpc)2(H2O)6] (I) and [Cd(H2dtpc)(bpy)(H2O)]n (II) (bpy = 2,2′-bipyridine). Complex (I) and (II) have been characterized by X-ray single crystal diffraction, IR, PXRD, TGA and fluorescence spectra. Structural analyses reveal that (I) is a binuclear structure, and complex (II) possesses a one-dimensional infinite zig-zag chain architecture and the chains are further assembled into 2D supramolecular network by strong hydrogen bonding interactions. Crystal data for (I): Monoclinic, space group P2(1)/n, a = 9.3221(19) ?, b = 6.6315(13) ?, c = 15.322(3) ?, β = 102.31(3)°, V = 925.4(3) ?3, Z = 4, R1 = 0.0269, and wR2 = 0.0604; for (II): Monoclinic, space group P2(1)/c, a = 9.9880(2) ?, b = 14.5085(2) ?, c = 11.6957(2) ?, β = 107.976(2)°, V = 1612.10(5) ?3, Z = 4, R1 = 0.0234 and wR2 = 0.0554. 相似文献6.
Malabika Nayak Samit Majumder Pascale Lemoine Sasankasekhar Mohanta 《Journal of chemical crystallography》2008,38(12):937-942
Abstract The synthesis, characterization, and structure of a cyano-bridged two-dimensional supramolecule, [CuII(trans-chxn)2]3[CoIII(CN)6]2·2H2O (1; chxn = 1,2-diaminocyclohexane), have been described. The title compound crystallizes in the triclinic Pī space group with the unit cell parameters: a = 9.141(5) ?, b = 12.406(5) ?, c = 15.064(5) ?, α = 95.190(5)°, β = 94.460(5)°, γ = 109.510(5)°, V = 1593.0(12) ?3, and Z = 1. The compound contains two crystallographically different copper(II) and cobalt(III) centers. Each of the two copper(II)
ions is hexacoordinated by two diamines and two bridging cyanides. Two trans cyanides of one type of hexacyanometalate link one type of copper(II) center to result in one-dimensional chain, while two
pairs of trans cyanides of the second type of hexacyanometalate link both the types of copper(II) ions to result in the second dimension.
There are extensive hydrogen bonding interactions within the two-dimensional cyano-bridged sheet involving the solvated water
molecule, amine groups, and cyanide nitrogens.
Index Abstract Synthesis, characterization, and structure of a cyano-bridged two-dimensional CuIICoIII coordination polymer derived from trans-1,2-diaminocyclohexane as blocking ligand
Malabika Nayak, Samit Majumder, Pascale Lemoine, and Sasankasekhar Mohanta*
The synthesis, characterization, and structure of a cyano-bridged two-dimensional supramolecule, [CuII(trans-chxn)2]3[CoIII(CN)6]2 · 2H2O (chxn = 1,2-diaminocyclohexane), have been described.
相似文献
7.
Abstract The zinc(II) complex with 2-(2-hydroxyphenyl)benzimidazole, namely [Zn(2-(2-hydroxyphenyl)benzimidazolate)2]·C2H5OH (1 · C2H5OH) has been synthesized and characterized by X-ray crystallography and photoluminescent analysis. The complex crystallizes
in monoclinic space group P21/c with cell parameters a = 10.156(1) ?, b = 25.771(3) ?, c = 9.674(1) ?, α = 90°, β = 103.641(2)°, γ = 90°, Z = 4, V = 2460.4(4) ?3. The central Zn(II) is four-coordinate and has a tetrahedral geometry. The steady-state and time-resolved photoluminescent
spectra for the title compound have also been studied. The emission property can be ascribed to ligand-centered charge-transfer
transition (LCCT) with π → π* property.
Index Abstract
A new co-crystal of Zn(II) complex of 2-(2-hydroxylphenyl)benzimidazole with ethanol solvate has been prepared, characterized
by X-ray crystallography and fluorescent studies.
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8.
Wesley H. Monillas Glenn P. A. Yap Klaus H. Theopold 《Journal of chemical crystallography》2009,39(11):849-852
Abstract
The complexes (bis(2,6-diisopropylphenyl)pentane-2,4-ketiminato)(μ2-diisopropylacetamidinato) chromium(II) (1) and (bis(2,6-diisopropylphenyl)pentane-2,4-ketiminato)(μ2-dicyclohexylacetamidinato) chromium(II) (2) have been synthesized and structurally characterized. Complex 1 crystallizes in space group Pbcn with crystal cell parameters a = 10.7183(13) ?, b = 16.4093(19) ?, c = 20.687(2) ?, V = 3,638.3(7) ?3 and Z = 4. Complex 2 crystallizes in triclinic space group P-1 with crystal cell parameters a = 10.750(3) ?, b = 12.174(3) ?, c = 16.308(4) ?, α = 75.903(4)°, β = 82.137(4)°, γ = 85.511(4), V = 2,048.4(8) ?3 and Z = 2. The complexes adopt a spiro distorted square planar geometry and have similar structural parameters. 相似文献9.
Pascale Lemoine Vincente Viossat Elie Dayan Dung Nguyen-Huy Bernard Viossat 《Journal of chemical crystallography》2010,40(10):852-858
Abstract
Two ternary complexes of manganese(II) indole-2-carboxylate (2-IC−) or isoquinolinecarboxylate (IQC−) with 1,10-phenanthroline (phen) in methanol or in dimethylacetamide (DMA) were synthesized and studied by X-ray diffraction and IR spectra. [Mn(C9H6NO2)2(C12H8N2)2]·CH4O (1) crystallizes in the triclinic space group P-1 with cell parameters of a = 10.548(2) ?, b = 14.168(3) ?, c = 14.580(3) ?, α = 62.35(2)°, β = 69.16(2)°, γ = 78.61(2)°, V = 1802.4(6) ?3 and Z = 2; [Mn(C10H6NO2)2(C12H8N2)].C4H9NO (2) crystallizes in the monoclinic space group P21/a with cell parameters of a = 15.304(5) ?, b = 12.871(5) ?, c = 17.421(5) ?, β = 114.39(1), V = 3125(2) ?3 and Z = 4. In 1, Mn is six-coordinate by two bidentate phen ligands and two 2-IC− ligands and exhibits a very distorted octahedral geometry. This complex is solvated by methanol involved in hydrogen bonding. In 2, Mn atom is surrounded by one bidentate phen ligand and two bidentate IQC− ligands. The complex exhibits a distorted octahedral geometry around the MnII atom. The crystal structure is completed by a disordered DMA solvate molecule. The IR spectra of both compounds are slightly different in the range 4000–2400 cm−1 which may be attributed to hydrogen bond lack in 2. 相似文献10.
Chomchai Suksai Chaveng Pakawatchai Thawatchai Tuntulani 《Journal of chemical crystallography》2009,39(5):348-352
Abstract The crystal structures of pyridine containing thiourea moieties as substituents, (1) and (2), have been determined. The ortho-substituted pyridine (1) crystallized in monoclinic space group P21/c with a = 16.091(3) ?, b = 11.368(2) ?, c = 7.4364(14) ?, β = 100.489(4)o, V = 1337.5(4) ?3, z = 4. In this structure an intramolecular N–H···N hydrogen bond forms a pseudo-seven-membered ring. The meta-substituted pyridine (2) crystallized in monoclinic space group P21/c with a = 14.5408(15) ?, b = 8.8508(9) ?, c = 10.7959(11) ?, β = 106.435(2)o, V = 1332.6(2) ?3, z = 4. Crystal packing revealed that compounds (1) and (2) can form dimeric structures via intermolecular H-bonding using N–H···S and N–H···N interactions, respectively.
Graphical Abstract Varying the substituent position on the pyridine ring using thiourea moieties gave unique molecular aggregations in solid
state structures.
相似文献
11.
Audra F. Gushwa Yamina Belabassi Jean-Luc Montchamp Anne F. Richards 《Journal of chemical crystallography》2009,39(5):337-347
Abstract The syntheses and X-ray analyses of triphenylmethyl (trityl=Tr) phosphorus compounds are reported and the structural similarities,
differences and 31P chemical shifts compared. A series of seven trityl-substituted phosphorus-containing compounds have been characterized by
single crystal X-ray diffraction. Ph3CPPh2, 1, a bulky P(III) compound crystallizes in the triclinic space group , a = 7.5624(6) ?, b = 9.5470(8) ?, c = 16.9722(14) ?, α = 83.4720(10)°, β = 80.541(2)°, γ = 68.1580(10)°, the borane complex of 1, 2, Ph3CPPh2(BH3) crystallizes as monoclinic colorless crystals, P21/c, a = 10.0972(12) ?, b = 9.6955(12) ?, c = 25.197(3) ?, β = 90.258(2)°. The analogous methyl substituted, 3, Ph3CPMe2(BH3) is monoclinic, C2/c, a = 15.628(3) ?, b = 12.770(3) ?, c = 18.406(4) ?, β = 103.968(3)°. Compounds 4–7 are trityl substituted P(V) compounds: Ph3CP(Ph)(O)(OH), 4, crystallizes in the triclinic space group , a = 8.9847(18) ?, b = 9.7443(19) ?, c = 12.786(3) ?, α = 72.045(3)°, β = 72.031(3)°, γ = 78.769(3)°. Esterification of 4 affords TrCP(O)(Ph)OBn 5, space group, P21/c, a = 7.9196(5) ?, b = 31.701(2) ?, c = 19.8062(13) ?, β = 99.7750(10)°. A phosphonate diester was also characterized, Ph3CP(O)(OEt)2, 6, triclinic, , a = 7.9521(17) ?, b = 9.2205(19) ?, c = 14.471(3) ?, α = 85.906(4)°, β = 83.031(4)°, γ = 68.283(4)°. Treatment of the trityl H-phosphinic acid, Ph3CPO2H2, with elemental selenium yields yellow crystals of 7, [Ph3CP(O)(OH)Se]2, P21/c, a = 9.0603(4) ?, b = 22.3652(11) ?, c = 16.9134(7) ?, β = 107.035(2)°. In our efforts to isolate a nickel-phosphine complex, two Ni(II) complexes were crystallographically analyzed,
[Ni(OP(H)Ph2)6]2BF4
−
8 and 9. Complex 8 with an uncoordinated BF4
− ion crystallizes as yellow orthorhombic crystals, Pbca, a = 18.8247(12) ?, b = 18.5518(12) ?, c = 21.0976(14) ?, while crystals of 9 are trigonal, , a = b = 13.1545(12) ?, c = 68.461(9) ?.
Graphical Abstract The syntheses and X-ray analyses of triphenylmethyl (trityl=Tr) phosphorus compounds are reported and the structural similarities,
differences and 31P chemical shifts compared.
相似文献
12.
Michael Findlater Nicholas J. Hill Alan H. Cowley 《Journal of chemical crystallography》2010,40(1):64-66
Abstract
Pentacarbonyl(trimethylamine)chromium (1) and pentacarbonyl(trimethylamine)molybdenum (2) are isomorphous and crystallize in the space group P21/n, a = 6.8267(14) ?, b = 11.269(2) ?, c = 14.692(3) ?, β = 102.89(3)°, V = 1,101.8(4) ?3, Z = 4 for 1 and a = 6.949(5) ?, b = 11.362(5) ?, c = 14.927(5) ?, β = 102.639(5)°, V = 1,150.0(10) ?3, Z = 4 for 2; both compounds possess distorted octahedral molecular geometries that result from the steric influence of the coordinated amine ligand. 相似文献13.
Günseli Turgut Cin Seda Demirel Topel Abban Cakıcı Arzu Özek Yıldırım Ahmet Karadağ 《Journal of chemical crystallography》2012,42(4):372-380
Abstract
Two novel ferrocenyl substituted N-acetyl-2-pyrazolines, N-acetyl-3-(2-furyl)-5-ferrocenyl-2-pyrazoline (3) and N-acetyl-3-(2-thienyl)-5-ferrocenyl-2-pyrazoline (4), have been synthesized and characterized by FTIR, 1H-NMR, 13C-NMR techniques, elemental analysis and X-ray structure analysis. Thermal properties of these compounds have been determined by TGA, DTA and DSC analysis. Compound 3 (C19H18N2O2Fe) crystallizes in the monoclinic space group P21/c and Z = 4, with a = 8.6970(4) ?, b = 18.4725(9) ?, c = 11.0041(5) ?, β = 110.942(3)°. Compound 4 (C19H18N2OSFe) crystallizes in the orthorhombic space group Fdd2 and Z = 16, with a = 84.242(2) ?, b = 13.5416(5) ?, c = 5.9405(2) ?, β = 90°. In terms of crystal packing, each compound shows different molecular arrangement, which are stabilized by C–H···O intermolecular weak hydrogen bonds, and/or C–H···π interactions. 相似文献14.
Abstract The title compound bis(3-chlorophenyl)-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-methanol 8 has been synthesized and established by H NMR, IR and MS spectra and X-ray diffraction crystallography. Compound 8, C23H29Cl2N3O, Mr = 424.31, crystallizes in the monoclinic space group P21/c with unit cell parameters a = 14.5402(6) ?, b = 12.5888(5) ?, c = 11.6510(5) ?, α = 90o, β = 100.183o(2), γ = 90o, V = 2099.05(15) ?3, Dx = 1.343 mg m−3 and Z = 4. The final R was 0.0514. The molecular conformation and packing is stabilized by interactions of intermolecular
O1–H1···N3′.
Index Abstract The structure of bis(3-chlorophenyl)-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-methanol by the reaction of compound
4 and Grignard regent is studied.
相似文献
15.
Abstract
The crystal structures of the compounds 1-phenyl-2-(1H-1,2,4-triazolo-yl)-3-phenyl-propen-1-one (2), and 2,4-diphenyl-3-(1,2,4-triazolo-yl)-1H,4H-1,5-benzothiazepine (3) were obtained by single crystal X-ray diffraction. Compound 2 crystallizes in the triclinic system with space group P − 1, a = 8.5553(17) ?, b = 9.6229(19) ?, c = 9.924(2) ?, α = 106.16(3)°, β = 108.03(3)°, γ = 105.14(3)°, V = 690.1(2) ?3, Z = 2. The compound 3 crystallizes in the orthorhombic system with space group Pbca, a = 12.904(3) ?, b = 15.864(3) ?, c = 19.140(4) ?, α = 90°, β = 90°, γ = 90°, V = 3918.3(14) ?3, Z = 8. H-bonds and π–π stacking are the main non-bonding interactions in the molecular structure. Details of the synthesis, structures, and spectroscopic properties of the two compounds are discussed. 相似文献16.
Sarah Holzer Frank R. Fronczek Victor G. Young Jr. Stephen Fox 《Journal of chemical crystallography》2006,36(12):883-889
The molecular bis(2-N-H-pyrrolylcarbaldimine)nickel(II) and palladium(II) complexes are isolated in moderate yield (30–35%) from in situ assembly of the Schiff base with metal(II) salt, base, and pyrrole-2-carbaldehyde in aqueous ammonia solution. The nickel(II) complex, 1, is monoclinic, space group P21/c, with a=11.289(6) ?, b=5.611(3) ?, c=8.287(5) ?, β=111.620(6)°, and V=488.0(5) ?3 with Z=2, for d
calc=1.667 Mg/m3. The palladium analog, 2, is isomorphous, space group P21/c, with a=11.481(3) ?, b=5.5738(10) ?, c=8.276(2) ?, β=110.923(12)°, and V=494.7(2) ?3 with Z=2, for d
calc=1.965 Mg/m3. In both crystal structures, the metal resides on an inversion center. In the IR spectra, ν(C=N) appears at 1561 cm−1 in 1, and 1557 cm−1 in 2, while ν(N–H) shows at 3345 cm−1 and 3335 cm−1, respectively. The 1H-nmr spectra reveal the C–H and N–H protons of the imine group as sharp and broad doublets, respectively, at 7.62 and 8.38 δ in 1 and at 7.92 and 9.73 δ in 2. 相似文献
17.
Shu-Lin Ma Shi Ren Yue Ma Shi-Ping Yan Dai-Zheng Liao 《Journal of chemical crystallography》2010,40(11):1011-1015
Abstract
A mononuclear fragment [Cu(L)Cl]ClO4 (1) and a cyano-bridged CuII–NiII binuclear complex [CuL][Ni(CN)4]·0.25H2O (2) (L = 1,3,6,8,11,14-hexaazatricyclo[12.2.1.18,11]-octadecane), have been prepared and characterized. X-ray single crystal analyses indicate that the both complexes crystallize in the monoclinic crystalline system. The complex of 1 in P1n1 space group with unit cell constants a = 6.1176(6) ?, b = 11.9147(10) ?, c = 12.2041(12) ?, β = 98.816(5)° and 2 in the P21/n space group with unit cell constants a = 8.1419(13) ?, b = 14.695(2) ?, c = 16.863(3) ?, β = 98.375(2)° have been revealed. The complex 2 assumes a binuclear structure in which the nickel(II) ion is in a square planar environment and the copper(II) is in a square-prism geometry environment. 相似文献18.
Wesley H. Monillas Glenn P. A. Yap Klaus H. Theopold 《Journal of chemical crystallography》2009,39(7):535-538
Abstract Addition LiNHPh to a [(NacNac)Cr(μ-I)]2 [NacNac = 2,4 pentane-N-N′-bis(2,6-diisopropylphenyl) ketiminato] in THF yields a dimeric anilido complex, 1, that crystallizes in P21/n with unit cell parameters a = 13.390(2) ?, b = 26.298(5) ?, c = 21.326(4) ?, β = 93.905(4)°, V = 7492(2) ?3 and Z = 4. The same reaction in the presence of aniline yields a monomeric anilido complex, 2, with a coordinated aniline molecule. Complex 2 crystallizes in P2
1
/c with unit cell parameters a = 28.530(5) ?, b = 10.8116(18) ?, c = 26.492(5) ?, β = 115.685(3)°, V = 7364(2) ?3 and Z = 8. Addition of aniline to isolated 1 yields 2. Addition of LiNPh2 to [(NacNac)Cr(μ-I)]2 in THF yields a monomeric complex that crystallizes in P21/n with the unit cell parameters a = 11.152(6) ?, b = 23.820(12) ?, c = 17.915(9) ?, β = 106.223(9)°, V = 4569(4) ?3 and Z = 4. All complexes have been spectroscopically and structurally characterized.
Graphical Abstract Addition of LiNHPh or LiNPh2 to [(NacNac)Cr(μ-I)]2 yields a dimeric or a monomeric complex whereas addition of LiNHPh in the presence of aniline yields the monomeric anilido
complex.
相似文献
19.
Ki-Young Choi 《Journal of chemical crystallography》2010,40(11):1016-1020
Abstract
The tridentate Schiff base phenol-containing ligand (2-hydroxybenzyl)(2-pyridylmethyl)amine (Hbpa) reacts with copper(II) perchlorate to give the phenolato-bridged dinuclear complex [Cu(bpa)(H2O)]2·2ClO4 (1). Each copper(II) ion exhibits a distorted square-pyramidal environment, being coordinated by two nitrogen atoms and two phenolato oxygen atoms of the two deprotonated bpa ligands, and one oxygen atom of the water molecule. It crystallizes in the triclinic system P-1 with a = 7.8790(6), b = 8.9345(7), c = 12.0207(9) ?, α = 69.158(1), β = 85.307(1), γ = 76.629(1)°, V = 769.39(10) ?3, Z = 1. Cyclic voltammetry of 1 gives two oxidation and two reduced processes. 相似文献20.
Hossein Aghabozorg Mohammad Ghadermazi Fatemeh Zabihi Bahar Nakhjavan Janet Soleimannejad Elahe Sadr-khanlou Abolghasem Moghimi 《Journal of chemical crystallography》2008,38(9):645-654
Abstract Three new complexes of zinc(II) with three different proton transfer compounds, obtained from pyridine-2,6-dicarboxylic acid
(dipicolinic acid) and different Lewis bases, were synthesized and characterized using IR, 1H NMR and 13C NMR spectroscopy and single crystal X-ray diffraction. The chemical formulae and space groups of the complexes are (pipzH2)[Zn(pydc)2] · 4H2O, P21/n (1), (EDGnH2)[Zn(pydc)2] · 3H2O, P21/c (2) and (pdaH2)[Zn(pydc)2] · 4H2O,
(3) where pydc, pipz, EDGn and pda are standing for dipicolinic acid, piperazine, ethylenediguanidine and 1,3-propanediamine
respectively. Cell parameters of the complexes are a = 7.9493(4) ?, b = 13.4386(7) ?, c = 21.0557(11) ?, β = 90.415(5)° for 1; a = 9.785(3) ?, b = 25.671(4) ?, c = 9.3402(16) ?, β = 90.790(17)° for 2 and a = 8.411(5) ?, b = 11.650(7) ?, c = 12.793(8) ?, α = 115.534(9)°, β = 92.791(10)°, γ = 97.778(10)° for 3. The three crystal structures illustrate that the metal ion is six-coordinated by two pydc’s. In all three compounds a large
number of O–H⋯O, N–H⋯O and C–H⋯O hydrogen bonds are observed. These interactions as well as other noncovalent interactions
such as ion–pairing and π–π stacking play an important role in the formation and stabilization of supramolecular systems in
the crystal lattices.
Index Abstract The main purpose of this paper is to report and discuss about the synthesis, characterization, crystal structure and non-covalent
interactions of three supramolecular frameworks of six-coordinated Zn(II) complexes, obtained by the reaction of different
proton transfer compounds, i.e. (pipzH2)(pydc), (EDGnH2) (pydc) · 3H2O and (pdaH2)(pydc) · (pydcH2) · 2.5H2O with corresponding metallic salts.
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