Abstract The novel ionic compound [H2bdtd][CoCl4] · 2H2O (1) was prepared by the reaction between CoCl2 and 2,13-bis(acetamido)-3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane (bdtd) in adjusted to pH 3.0 by 1.0 M HCl and structurally characterized. The crystals are monoclinic C2/c with a = 18.7777(9), b = 9.7356(4), c = 20.0884(9) ?, β = 109.6340(10)°, V = 3458.9(3) ?3, Z = 4. The dication H2bdtd occupies a special position about an inversion center. The cobalt(II) atom in the anion is in a distorted tetrahedral
environment with four chloride ligands. The crystal structure is stabilized by a variety of hydrogen-bonding contacts involving
the dication, chloride anions and solvent water molecules. Cyclic voltammetry of [CoCl4]2− anion in 1 undergoes irreversible one-electron reduction to the CoII/CoI.
Graphical abstract The crystal structure of the ionic compound [H2bdtd][CoCl4] · 2H2O (1) consists of [H2bdtd]2+ cation, [CoCl4]2− anion and water molecules joined together by ionic interaction and hydrogen bonds.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
A co-crystal of cobalt(II) complexes, Co(AMTTO)2(CH3CN)2]2+(NO3)2. [Co(AMTTO)2(H2O)2]2+(NO3)2, compound (1) was isolated from the reaction of Co(NO3)2?6H2O and 4-amino-3-mercapto-6-methyl-5-oxo-1,2,4-triazine (AMTTO) in acetonitrile as solvent. Isolated crystals were characterized by elemental analyses, IR spectroscopy as well as X-ray diffraction studies. Crystal data for 1 at 95 K revealed a monoclinic space group P21/n, a?=?11.7903(5), b?=?12.1279(5), c?=?14.1443(6) Å, β?=?99.244(4)°, Z?=?2, R1?=?0.0339. Compound 1 consists of two co-crystallized Co(II) complexes [Co(AMTTO)2(CH3CN)2]2+ and [Co(AMTTO)2(H2O)2]2+ and four nitrate counter anions In both complexes, cobalt(II) ions are in an octahedral arrangement. Two S, N bidentate AMTTO ligands are coordinated to both Co(II) ions. The coordination sphere of Co1 is completed by two acetonitrile molecules, and these positions are occupied by water molecules for Co2.
Graphic Abstract
A co-crystal of cobalt(II) compound was isolated from the reaction of Co(NO3)2?6H2O and 4-amino-3-mercapto-6-methyl-5-oxo-1,2,4-triazine in acetonitrile as solvent.
Abstract The synthesis and crystal structure of a new Ni(II) complex of stoichiometry [Ni(phen)2(H2O)2](H2Or)2 · 2H2O, where phen is phenanthroline and H2Or is oratate monoanion, are reported. The complex [Ni(phen)2(H2O)2](H2Or)2 · 2H2O crystallizes in the monoclinic system with space group C2/c and cell parameters a = 16.1661(8) ?, b = 12.5669(7) ? and c = 16.4752(7) ?. The coordination around Ni(II) is a distorted octahedron with two phen ligands perpendicular to each other
and two aqua ligands in cis- position. Orotate ions locate themselves out of the coordination sphere and bridge the [Ni(phen)2(H2O)2]2+ moieties through hydogen bonding with aqua ligands. The FT-IR spectrum of the complex and thermal decomposition behaviour
are also briefly discussed.
Graphical Abstract
Diaquabis(phen)Ni(II) Complex with Vitamin B13 Counter-ionsDursun Ali K?se, Birgül Zümreoglu-Karan, Başak Koşar, Orhan Büyükgüng?r
A new complex where Vitamin B13 monoanions act as counter ions and bridge the [Ni(phen)2(H2O)2]2+ units by hydrogen bonds is described
CCDC deposition number is 606339. 相似文献
Abstract The cadmium(II) complex [Cd(phba)2(bim)(H2O)2]n (1) (phba = 4-hydroxybenzoate, bim = 1,2-bis(imidazol-1-yl)ethane) has been synthesized and structurally characterized by X-ray
diffraction analysis. It crystallizes in the monoclinic space group C2/c, a = 23.820(4) ?, b = 9.5331(14) ?, c = 11.1086(19) ?, β = 111.519(4)°, V = 2346.7(7) ?3, Z = 4. The coordination geometry of Cd(II) atom is distorted octahedral; it is coordinated by two nitrogen atoms from the imidazole
rings of two symmetry-related bim molecules, and four oxygen atoms from two symmetry-related phba anions and two water molecules.
The Cd(II) atoms are bridged by bim molecules to form a one-dimensional chain.
Graphical abstract
Synthesis and crystal structure of a
one-dimensional chain cadmium
coordination polymer bridged
through 1,2-bis(imidazol-1-yl)ethane
Yuping Zhang, Liyan Wang,
Shouwu Wang, Baolong Li, Yong Zhang
The cadmium(II) complex [Cd(phba)2(bim)(H2O)2]n (1) has
been synthesized and structurally characterized by X-ray
diffraction analysis. The coordination geometry of Cd(II) atom
is distorted octahedral; it is coordinated by two nitrogen atoms
from the imidazole rings of two symmetry-related bim ligands,
and four oxygen atoms from two symmetry-related phba anions
and two water molecules. The Cd(II) atoms are bridged by bim
ligands to form a one-dimensional chain. 相似文献
Abstract A new complex [Co(H2pztc)(bpy)H2O] (H4pztc = pyrazine-2,3,5,6-tetracarboxylic acid, bpy = 2,2′-bipyridine) has been synthesized by hydrothermal reactions of Co(NO3)2 · 6H2O with H4pztc and bpy and characterized by IR and X-ray diffraction single crystal structure analysis. It belongs to monoclinic system,
P21/c space group with a = 13.454(2) ?, b = 12.939(2) ?, c = 11.4993(19) ?, α = 90°, β = 111.640(3)°, γ = 90°. This complex is assembled into 3D supramolecular architecture by hydrogen bonds (O–H···O, C–H···O).
Index Abstract A new complex of cobalt(II) with pyrazine-2,3,5,6-tetracarboxylic acid and 2,2′-bipyridine is assembled by intermolecular
hydrogen bonds forming 2D layer and 3D supramolecular network.
相似文献
Synthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes with the formula [ZnLn(HL)(µ-OAc)(NO3)2(H2O)x(MeOH)1-x]NO3 · n H2O · n MeOH [Ln?=?Pr (1), Nd (2)] and the crystal and molecular structure of [ZnNd(HL)(µ-OAc)(NO3)2(H2O)] [ZnNd(HL)(OAc)(NO3)2(H2O)](NO3)2 · n H2O · n MeOH (3) are reported. The asymmetrical compartmental ligand (E)-2-(1-(2-((2-hydroxy-3-methoxybenzylidene)amino)-ethyl)imidazolidin-2-yl)-6-methoxyphenol (H2L) is formed from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation, resulting in a peripheral imidazoline ring. The structures of 1–3 were revealed by X-ray crystallography. The smaller ZnII ion occupies the inner N2O2 compartment of the ligand, whereas the larger and more oxophilic LnIII ions are found in the outer O2O2’ site.
Graphic Abstract
Synthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes (Ln?=?Pr, Nd) bearing an asymmetrical compartmental ligand formed in situ from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation are reported.
Abstract The reaction of the third-generation, bis(pyrazolyl)methane ligand 1,1,5,5-tetra(1-pyrazolyl)pentane, [CH(pz)2]2(CH2)3 (pz = 1-pyrazolyl), with the dimer [Pt(p-tolyl)2(μ-SEt2)]2 yields the complex {μ-[CH(pz)2]2(CH2)3}[Pt(p-tolyl)2]2. The complex crystallizes in the space group P
with unit cell dimensions a = 11.9461(5) ?, b = 12.1475(5) ?, c = 16.0665(7) ?; α = 102.424(1)°, β = 104.413(1)°, γ = 102.140(1)°. The platinum centers adopt a square planar coordination geometry where each bis(pyrazolyl)methyl group binds
in a cis bidentate fashion.
Index abstract The complex {μ-[CH(pz)2]2(CH2)3}[Pt(p-tolyl)2]2 (pz = 1-pyrazolyl) has been prepared by the reaction between the bis(pyrazolyl)methane ligand [CH(pz)2]2(CH2)3 and [Pt(p-tolyl)2(μ-SEt2)]2.
Daniel L. Reger*, Russell P. Watson, and Mark D. Smith
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA,reger@mail.chem.sc.edu
相似文献
Abstract The three complexes (pnH2)[Co(pydc)2]·4H2O 1, (pnH2)[Cu(pydc)2]·4H2O 2, and (pnH2)[Cd(pydc)2]·3.5H2O 3 (pn: propane-1,3-diamine, pydc: pyridine-2,6-dicarboxylate) were prepared using a proton transfer compound (pnH2)(pydc)·(pydcH2)·2.5H2O, LH2 and corresponding metallic salts. The characterization was carried out using elemental analysis, IR and NMR spectroscopy,
and single crystal X-ray diffraction. Complexes 1 and 2 crystallize in space group P
, but complex 3 crystallizes in space group P2/c. Cell parameters of the complexes are a = 8.449(1) ?, b = 11.668(1) ?, c = 12.801(1) ?, α = 115.748(2)°, β = 93.038(2)°, γ = 97.867(2)° for 1; a = 7.973(2) ?, b = 16.632(2) ?, c = 25.280(5) ?, α = 94.178(6)°, β = 95.186(6)°, γ = 91.603(5)° for 2 and a = 20.055(1) ?, b = 13.8161(9) ?, c = 8.2418(5) ?, β = 100.086(1)° for 3. The three crystal structures illustrate that the metal ion is six-coordinated by two pydc’s. In structures of 2 and 3, it can be seen that propane-1,3-diaminium fragments have different conformations. The complexes have ion-pairing interactions,
O–H···O, N–H···O and C–H···O hydrogen bonds, π–π stacking as well as van der Waals forces as the main factors in formation
of their supramolecular structures.
Index Abstract
Supramolecular Cobalt(II), Copper(II) and Cadmium(II) Complexes Obtained from a Proton Transfer Compound including Pyridine-2,6-dicarboxylate
and Propane-1,3-diaminium Ions; Synthesis, Characterization and Crystal Structure
Hossein Aghabozorg, Mohammad Ghadermazi,Bahar Nakhjavan, Faranak Manteghi
The synthesis, characterization, crystal structure and non-covalent interactions of three supramolecular complexes of Co(II),
Cu(II) and Cd(II) obtained by the reaction of a proton transfer compound i.e. (pnH2)(pydc)·(pydcH2)·2.5H2O with the corresponding metallic salts are reported.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
Reaction of 1,2-bis(2,6-dicarboxypyridin-4-yl)ethyne and imidazole with Cu(II) produces crystals containing a discrete complex
of [μ-4,4′-(1,2-ethynediyl)-bis(pyridine-2,6-dicarboxylato)-N, O, O′-μ-N′, O′′, O′′′]-diaqua-bis(imidazole)-dicopper(II) complex
(1), [(C16H4N2O8)(C3H4N2)2(H2O)2Cu2] instead of a linear coordination polymer. The complex crystallizes in the monoclinic space group P21/n with a = 5.3763(8) ?, b = 18.522(3) ?, c = 11.4827(7) ?, β = 93.705(3) ° and Z = 2. The complex sits on a center of symmetry such that the two halves of the molecule are related by inversion symmetry.
The molecules pack in layers in which the molecules are joined by intermolecular N–H⋯O hydrogen bonds between imidazole and
carboxylate groups and O–H⋯O hydrogen bonds between carboxylate groups and water. 相似文献
Abstract Two isostructural dinuclear complexes [M2(Dpq)2(phth)2(H2O)4] · 2H2O [M = Zn(1), Ni(2), Dpq = dipyrido[3,2-d:2′,3′-f]quinoxaline, phth = phthalate] have been synthesized and characterized.
Crystal data: (1), Mr = 1031.55, monoclinic, C2/c, a = 27.7948(11), b = 10.5196(4), c = 15.0390(5) ?, β = 110.818(1), Z = 4, V = 4110.2 ?3, R1 = 0.0277, wR2 = 0.0718 [I > 2σ(I)]; (2), Mr = 1018.19, monoclinic, C2/c, a = 27.675(4), b = 10.3601(15), c = 15.082(2) ?, β = 110.954(2), Z = 4, V = 4038.3 ?3, R1 = 0.0248, wR2 = 0.0668 [I > 2σ(I)]. The dinuclear units are connected into 2-D supramolecular net through O–H···O hydrogen bonding. Moreover, the 2-D networks
are ultimately packed into a 3-D supramolecular structure via interlayer π···π stacking interaction between the aromatic rings of Dpq ligands. Furthermore, the photoluminescence property of compound 1 is also studied.
Graphical Abstract Two isostructural dinuclear complexes [M2(Dpq)2(phth)2(H2O)4] · 2H2O [M = Zn(1), Ni(2), Dpq = dipyrido[3,2-d:2′,3′-f]quinoxaline, phth = phthalate] have been synthesized, and the structure
study reveals that each dinuclear complex is connected with six other dinuclear units through the O–H···O hydrogen bonding
to form 2-D supramolecular networks.
相似文献
Abstract A novel three-dimensional coordination polymer [Ni(pca)2(H2O)]n (1) (pca = 2-pyrazinecarboxylate) has been synthesized by refluxing NiCl2·(H2O)6 with pcaH (pcaH = 2-pyrazinecarboxcylic acid). Complex 1 contains one-dimensional zigzag chains that are H-bonded to adjacent chains, generating a three-dimensional network that
crystallizes in the P212121 space group, and is isostructural with a previous structure containing Co (Liang et al. Inorg Chim Acta 328:152–158, 2002).
In structure 1, a = 7.79(6), b = 9.90(8), and c = 14.90(12) ?.
Graphical Abstract
Nickel Pyrazinecarboxylate: A New 1D Coordination Polymer
Kathryn L. Seward, Joseph M. Ellsworth, Mark D. Smith, Hans-Conrad zur Loye
A novel three-dimensional coordination polymer [Ni(pca)2(H2O)]n (1) (pca = 2-pyrazinecarboxylate) has been synthesized by refluxing NiCl2·(H2O)6 with pcaH (pcaH = 2-pyrazinecarboxcylic acid) and characterized by single crystal X-ray diffraction
. 相似文献
The imidazolinone herbicide imazapyr, 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid (H2imz) interacts with Cu(II) leading to [Cu(Himz)2(H2O)2] which crystallizes in the space group Pbca, with a = 12.5370(3) Å, b = 19.8500(5) Å, c = 22.7720(9) Å, and Z = 8. The Cu(II) atom is octahedrally surrounded by four nitrogen atoms of two Himz– anions and two water molecules. Each Himz– acts as a chelating ligand by means of N pyridine and N lactam atoms leading to five-membered chelate rings. The Cu
N distances vary from 1.948(4) to 2.299(5) Å while the Cu
O are 2.114(5) and 2.256(6) Å. The imidazol N-H are involved in short intramolecular hydrogen bonds with the carboxylate groups. The structure is stabilized by an intermolecular hydrogen-bonded network involving the water molecules and the carboxylate groups. 相似文献
Abstract A new ternary mixed-ligand complex [Cu2(sal-glu)2(bipy)(H2O)2] · (H2O) (bipy = 4,4′-bipyridine and sal-glu = salicylaldehyde l-glutamic Schiff base) has been synthesized and characterized by X-ray diffraction. It crystallizes in the triclinic system,
space group P-1 with a = 9.6199(13) ?, b = 9.9111(13) ?, c = 9.9167(13) ?. The amino acid Schiff base coordinates to the Cu(II) ion in a tridentate mode including phenol-hydroxyl oxygen,
carboxyl oxygen and amide nitrogen atom, while the bipy coordinates in bidentate bridging mode linking two Cu(II) ions. The
[Cu2(sal-glu)2(bipy)(H2O)2] units are linked into 1-D chain structure and the bipy molecules are interspersed into parallel sheets via intermolecular
hydrogen bonds. The carboxyl oxygen atoms, phenolic oxygen atoms and water oxygen atoms are involved in the extensive intermolecular
hydrogen bond network between the water molecules and phenol-hydroxyl oxygen atoms from salicylaldehyde derived ligand.
Graphical Abstract A new ternary mixed-ligand complex [Cu2(sal-glu)2(bipy)(H2O)2]·(H2O) (bipy = 4, 4′-bipyridine and sal-glu = salicylaldehyde l-glutamic Schiff base) crystallizes in the triclinic system, space group P-1 with a = 9.6199(13) ?, b = 9.9111(13) ?, c = 9.9167(13) ?. The amino acid Schiff base coordinates to the Cu(II) ion in a tridentate mode including phenol-hydroxyl oxygen,
carboxyl oxygen and amide nitrogen atom, while the bipy coordinates in bidentate bridging mode linking two Cu(II) ions. The
[Cu2(sal-glu)2(bipy)(H2O)2] units are linked into 1-D chain structure and the bipy molecules are interspersed into parallel sheets via intermolecular
hydrogen bonds. The carboxyl oxygen atoms, phenolic oxygen atoms and water oxygen atoms are involved in the extensive intermolecular
hydrogen bond network between the water molecules and phenol-hydroxyl oxygen atoms from salicylaldehyde derived ligand.
相似文献
Abstract The crystal structure of the title compound, [2Cs+(C12H24O6)2(CHO2−)2(H2O)2], was determined by an X-ray diffraction analysis. The compound crystallizes in the monoclinic space group P21/n with cell parameters a = 10.4278(7) ?, b = 10.0183(5) ?, c = 18.2383(12) ?, β = 93.723(5)°, V = 1910.3(2) ?3 and Z = 2. The Cs cations are bonded to each of the six O atoms of a crown ether ring, two water molecules, and one O atom of a
formato anion. As a result of that, a centrosymmetric dimeric dinuclear complex is formed. The two halves of the dimer are
connected by a ring of formato anions and water molecules which are linked by O–H···O hydrogen bonds.
Index Abstract The title compound, bis(18-crown-6)-bis(formato-O), caesium dihydrate, features a centrosymmetric dimeric dinuclear complex
where two Cs cations are coordinated by six O atoms of a crown ether ring. The two halves of this complex are held together
by a ring of formato anions and water molecules which are linked by hydrogen bonds.
相似文献
Index Abstract In the dinuclear compound (HPhen)2[Sm2(Hsal)8(H2O)2] · 2H2O (Hsal = o-HOC6H4CO2−, Phen = 1,10-phenanthroline), intermolecular hydrogen bonds and π–π stacking interactions between parallel aromatic rings
result in the formation of a two-dimensional supramolecular network.
相似文献
Abstract A new complex [Cu(NCS)4 (N-Eim)4] [Cu(NCS)2 (N-Eim)2] (where N-Eim = N-ethylimidazole) has been synthesized and structurally characterized by single-crystal X-ray diffraction.
The compound crystallizes in the Triclinic space group P−1 with the parameters: a = 8.7707(18) ?, b = 10.712(2) ?, c = 13.511(3) ?, α = 104.73(3)°, β = 104.84(3)°, γ = 102.52(3)°, V = 1131.54(3) ?3, with Z = 1 formula units. In the structure, the copper atoms all assume an elongated octahedral geometry with two distinct coordination
environments; one is coordinated by four N-ethyl-imidazole ligands and two axial SCN groups, and another by two SCN groups
and two N-ethyl-imidazole ligands. The two units form one infinite 1D zigzag chain along the [1 0 1] plane by two thiocyanate
ligands from the [Cu(NCS)4 (N-Eim)4] units.
Index Abstract The title compound, tetrakis(1-ethyl-1H-imidazole)diisothio cyanatocopper(II) bis(1-ethyl-1H-imidazole)diisothiocyanatocopper(II)
has been synthesized and structurally characterized by single-crystal X-ray diffraction. In the structure, the copper atoms
all assume an elongated octahedral geometry with two distinct coordination environments. The two units form one infinite 1D
zigzag chain along the [1 0 1] plane by two thiocyanate ligands from the [Cu(NCS)4 (N-Eim) 4] units.
相似文献
Abstract These complexes have been characterized by X-ray crystallography, spectroscopic, and cyclic voltammetry. In 1, the copper(II) ion has a distorted square-pyramidal geometry with three nitrogen atoms of the dpa ligand and two oxygen
atoms of the nitrate anions. The crystal structure of 2 shows that the copper(II) ions are bridged by tp anion to form a dinuclear complex, in which each copper(II) ion exhibits
a distorted square-pyramid with three nitrogen atoms of the dpa ligand, water molecule, and the oxygen atom of the bridging
tp ligand. Cyclic voltammetric data indicate that 1 undergoes irreversible one-electron oxidation to the CuIII and reversible one-electron reduction to the CuI, while 2 gives one reversible oxidation and two reversible and irreversible reduced processes. The electronic spectra and redox potentials
of the complexes are influenced significantly by the anionic ligands.
Graphical Abstract The reaction of [Cu(dpa)Cl2] with K(NO3)2 and Na2tp yields mononuclear and dinuclear copper(II) complexes [Cu(dpa)(NO3)2] (1) and [Cu2(dpa)2(H2O)2(μ-tp)](tp)·6H2O (2) (dpa = di-(2-picolyl)amine, tp = terephthalate).
相似文献
Two Ag(I)-based coordination polymers, namely [Ag2(3,3′-tmbpt)(o-Hbdc)2]·H2O (1) and [Ag8(3,3′-tmbpt)4(1,2,4-Hbtc)4(H2O)] (2) (3,3′-tmbpt?=?1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(3-pyridyl)-1,2,4-triazole, o-H2bdc?=?1,2-benzenedicarboxylic acid and 1,2,4-H3btc?=?1,2,4-benzenetricarboxylic acid), have been synthesized. Single-crystal X-ray diffraction analyses, elemental analyses, infrared spectra, powder X-ray diffraction analyses and thermogravimetric analyses have been carried out to characterize the structures of 1 and 2. Compound 1 shows a (3,4)-connected 2D layered structure with a Schläfli symbol of (42·6)(42·63·8). The intermolecular O–H···O hydrogen-bonding interactions extend the 2D layer into a 3D supramolecular architecture. Compound 2 exhibits a (3,3)-connected double-layered structure with a Schläfli symbol of (4·8·10)2(82·10)2. The intermolecular C–H···O hydrogen-bonding interactions link the double-layers to form a 3D supramolecular architecture. Moreover, there are intramolecular and intermolecular π–π interactions in 1 and 2, which stabilize the whole 3D supramolecular architectures. The band gaps of 1 and 2 are 3.19 and 3.09 eV, respectively, indicating the potential of 1 and 2 as semiconductive materials with wide band gaps. Moreover, 1 and 2 emit intense blue-green light, which may be potential photoactive materials.
Graphic Abstract
Two Ag(I)-based 3D supramolecular coordination polymers constructed from a multidentate N-donor ligand and two aromatic polycarboxylate anions via hydrogen-bonding and π–π interactions have been synthesized and characterized. The band gaps and photoluminescent properties of the compounds have been studied.
Abstract The structure of [Fe3O(O2CCH2OMe)6(H2O)3][FeCl4] · 2.5H2O has been determined. The three iron atoms and the μ3-oxo are coplanar. Each carboxylic ligand is bidentate and links two iron atoms in the cluster. The clusters are linked by
intra-trimer hydrogen bonding to form a zigzag motif that forms sheets via hydrogen bonding involving disordered waters of
hydration. The [FeCl4]− anion is intercalated between the hydrogen-bonded sheets. Crystal data: space group P21/n, a = 10.276(2), b = 22.793(5), c = 17.091(3) ?, β = 96.66(3)°, V = 3976(1) ?3, Z = 4, R = 0.0837, wR2 = 0.1836.
Graphical Abstract The structure of [Fe3O(O2CCH2OMe)6(H2O)3][FeCl4] · 2.5H2O has been determined in which the clusters are linked by intra-trimer hydrogen bonding to form a zigzag motif that forms
sheets via hydrogen bonding involving disordered waters of hydration.
相似文献
Reaction and crystallization of 1,2-bis(2,6-dicarboxypyridin-4-yl)ethyne with Co(II) produces crystals containing monomers of 4-(2,6-dicarboxypyridin-4-yl)ethynylpyridine-2,6-dicarboxylatotriaqua cobalt(II) monohydrate complex (1), [Co(C16H6N2O8)(H2O)3]·H2O, instead of a rigid 1-D metal–organic framework consisting of a linear coordination polymer. This complex crystallizes in the monoclinic space group C2/c with a=6.8028(9) ?, b=36.781(5) ?, c=7.5135(9) 2.474(2)° and Z=4. The complex sits on a symmetry axis such that the two halves of the molecule are related by two-fold rotation symmetry. The molecules form layers in which the molecules are joined by intermolecular O–H⋯O interactions involving hydrogen bonds between CO2H⋯CO2−, H2O⋯CO2−, H2O⋯CO2H and H2O⋯H2O groups.Supplementary material CCDC-289569 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/data request/cif, by e-mailing data request@ccdc.cam.ac.uk or by contacting The Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 IEZ, UK; fax: +44(0)1223-336033. 相似文献