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Synthesis, Crystal Structure, and Luminescence of Cadmium(II) and Silver(I) Coordination Polymers Based on 1,3-Bis(1,2,4-triazol-1-yl)adamantane.

ABSTRACT: Coordination polymers with a new rigid ligand 1,3-bis(1,2,4-triazol-1-yl)adamantane (L) were prepared by its reaction with cadmium(II) or silver(I) nitrates. Crystal structure of the coordination polymers was determined using single-crystal X-ray diffraction analysis. Silver formed two-dimensional coordination polymer [Ag(L)NO₃]_n, in which metal ions are linked by 1,3-bis(1,2,4-triazol-1-yl)adamantane ligands, coordinated by nitrogen atoms at positions 2 and 4 of 1,2,4-triazole rings. Layers of the coordination polymer consist of rare 18- and 30-membered {Ag₂L₂} and {Ag₄L₄} metallocycles. Cadmium(II) nitrate formed two kinds of one-dimensional coordination polymers depending on the metal-to-ligand ratio used in the synthesis. Coordination polymer [Cd(L)₂(NO₃)₂]_n was obtained in case of a 1:2 M:L ratio, while for M:L = 2:1 product {[Cd(L)(NO₃)₂(CH₃OH)]·0.5CH₃OH}_n was isolated. All coordination polymers demonstrated ligand-centered emission near 450 nm upon excitation at 370 nm.

SUBMITTER: Marchenko RD

PROVIDER: S-EPMC8434004 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Coordination Polymers Containing 1,3-Phenylenebis-((1H-1,2,4-triazol-1-yl)methanone) Ligand: Synthesis and ?-Caprolactone Polymerization Behavior.

Project description:The reaction of isophthaloyl dichloride with 1H-1,2,4-triazole afforded the new ligand 1,3-phenylenebis(1,2,4-triazole-1-yl)methanone (1). A series of Co(II), Cu(II), Zn(II) and Ni(II) complexes were synthesized using 1 and then characterized by melting point analysis, elemental analysis, theoretical calculations, thermogravimetric analysis, X-ray powder diffraction, nuclear magnetic resonance, infrared and Raman spectroscopy. Experimental and computational studies predict the formation of coordination polymers (CPs). The cobalt and copper CPs and zinc(II) complex were found to be good initiators for the ring-opening polymerization of ?-caprolactone (CL) under solvent-free conditions. ¹H-NMR analysis showed that the obtained polymers of CL were mainly linear and had terminal hydroxymethylene groups. Differential scanning calorimetry showed that the obtained polycaprolactones had high crystallinity, and TGA showed that they had decomposition temperatures above 400 °C. These results provide insight and guidance for the design of metal complexes with potential applications in the polymerization of CL.

| S-EPMC6150338 | biostudies-literature

Bis[2-(1H-1,2,4-triazol-1-yl-?N)-1,10-phenanthroline-?N,N']cadmium(II) bis-(perchlorate).

Project description:In the title complex, [Cd(C(14)H(9)N(5))(2)](ClO(4))(2), the Cd(II) ion is coordinated by two tridentate 2-(1H-1,2,4-triazol-1-yl)-1,10-phenanthroline ligands in a distorted octa-hedral CdN(6) environment. In both 2-(1H-1,2,4-triazol-1-yl)-1,10-phenanthroline ligands, the 1,2,4-triazolyl ring and the 1,10-phenanthroline ring system are essentially coplanar [maximun deviations of 0.136?(7) and 0.273?(5)?Å, respectively]. The dihedral angle between the mean planes of the ligands is 89.65?(4)°. In the crystal structure, there is a weak ?-? stacking inter-action between a pyridine ring and a symmetry-related benzene ring with a centroid-centroid distance of 3.772?(3)?Å.

| S-EPMC2971072 | biostudies-literature

catena-Poly[[[diaqua-copper(II)]-bis-[?(2)-1,3-bis-(1,2,4-triazol-1-yl)propane]] dinitrate monohydrate].

Project description:The title Cu(II) coordination polymer, {[Cu(C(7)H(10)N(6))(2)(H(2)O)(2)](NO(3))(2)·H(2)O}(n), was obtained by the reaction of equimolar Cu(NO(3))(2)·4H(2)O and 1,3-bis-(1,2,4-triazol-1-yl)propane (btp) in a water-methanol solvent. The Cu(II) atom is located on a centre of inversion and has an elongated octa-hedral coordination geometry formed by four N atoms from four symmetry-related btp ligands and two coordinated water mol-ecules. Adjacent Cu(II) atoms are connected by btp ligands, generating a double-stranded chain. The nitrate anion is disordered over two positions in a 0.828?(7):0.172?(2) ratio.

| S-EPMC2970232 | biostudies-literature

catena-Poly[[bis-(nitrato-?O)cadmium]bis-[?-1,3-bis-[(1H-1,2,4-triazol-1-yl)meth-yl]benzene-?(2)N(4):N(4')]].

Project description:In the title compound, [Cd(NO(3))(2)(C(12)H(12)N(6))(2)](n), the Cd(II) cation is located on an inversion center and is six-coordinated by four N atoms from four 1,3-bis-[(1H-1,2,4-triazol-1-yl)meth-yl]benzene (L) ligands and two O atoms from two nitrate anions in a slightly distorted octa-hedral geometry. The ligands link different Cd(II) ions into a ribbon-like structure along [001]. Two O atoms of the nitrate anion are disordered over two sets of sites with site occupancies of 0.575?(8) and 0.425?(8).

| S-EPMC3379191 | biostudies-other

Bis[?-2-(2,4-difluoro-phen-yl)-1,3-bis-(1H-1,2,4-triazol-1-yl)propan-2-olato]dicopper(II) bis-(perchlorate).

Project description:The title complex, [Cu(2)(C(13)H(11)F(2)N(6)O)(2)](ClO(4))(2), which was hydro-thermally synthesized, contains a binuclear copper cluster (2 symmetry) with a Cu(2)O(2) rhombus [Cu-O = 1.927?(2)?Å] formed by donation of two O atoms from two chelate rings. The tridentate function of each ligand is completed by two N atoms coordinated to the two Cu(II) atoms [Cu-N = 1.933?(2)?Å]. The separation distance of two Cu(II) atoms in a cluster is 2.988?(1)?Å. The dihedral angle between the six-membered chelate rings is 2.13?(9)°. The perchlorate counter-anion is disordered over two sites in a 0.58?(10):0.42?(10) ratio.

| S-EPMC2984043 | biostudies-literature

Bis(4H-1,2,4-triazol-3-yl)disulfane.

Project description:The title compound, C(4)H(4)N(6)S(2), was synthesized by the reaction of 3-mercapto-1H-1,2,4-triazole with sodium hydrox-ide in ethanol. The mol-ecule possesses a crystallographically imposed twofold axis. Inter-molecular N-H?N hydrogen bonds link the mol-ecules into chains along the c axis.

| S-EPMC2915304 | biostudies-literature

Bis[?-1,2-bis-(1,2,4-triazol-4-yl)ethane]bis-[diiodidozinc(II)].

Project description:In the title dinuclear complex, [Zn(2)I(4)(C(6)H(8)N(6))(2)], two Zn(II )atoms are bridged by two 1,2-bis-(1,2,4-triazol-4-yl)ethane (btre) ligands, forming a centrosymmetric metallacycle. The coordination geometry of the Zn(II) ion is distorted tetra-hedral with the coordination sphere formed by two N atoms from the triazole rings of two symmetry-related btre ligands and two iodide ligands.

| S-EPMC2979062 | biostudies-literature

Diaquabis-(thio-cyanato-?N)bis[6-(4H-1,2,4-triazol-4-yl-?N(1))pyridin-2-amine]-cadmium.

Project description:In the title compound, [Cd(NCS)(2)(C(7)H(7)N(5))(2)(H(2)O)(2)], the Cd(II) cation lies on an inversion center and is coordinated by the N atoms of two thiocyanate anions, by N atoms of two 6-(4H-1,2,4-triazol-4-yl)pyridin-2-amine ligands and by the O atoms of two water molecules in a distorted N(4)O(2) octa-hedral geometry. The dihedral angle between the triazole and pyridine rings is 23.15?(12)°. In the crystal, mol-ecules are linked by N-H?N and O-H?S hydrogen bonds. Offset ?-? stacking between parallel pyridine rings of adjacent mol-ecules is also observed, the centroid-centroid distance being 3.6319?(14)?Å.

| S-EPMC3414147 | biostudies-literature

catena-Poly[[tetra-aqua-[?(2)-1,4-bis-(1,2,4-triazol-1-yl)butane-?N:N]cadmium(II)] sulfate].

Project description:In the polymeric title compound, {[Cd(C(8)H(12)N(6))(H(2)O)(4)]SO(4)}(n), the Cd(II) atom is located on an inversion center and coordinated by four water mol-ecules and two 1,4-bis-(1,2,4-triazol-yl)butane ligands in a distorted CdO(4)N(2) octa-hedral geometry. The 1,4-bis-(1,2,4-triazol-yl)butane ligand is centrosymmetric, the mid-point of the central C-C bond being located on an inversion center. It links adjacent water-coordinated metal atoms into polymeric chains running along the c axis. Adjacent chains are linked by O-H?N hydrogen bonds. The S atom of the sulfate anion is located on a twofold rotation axis, thus the sulfate anion is equally disordered over two sites. The sulfate anion links with the polymeric chains via O-H?O hydrogen bonds, generating a three-dimensional supra-molecular network.

| S-EPMC3011647 | biostudies-literature

(Z)-1,3-Bis(4-chloro-phen-yl)-2-(1H-1,2,4-triazol-1-yl)prop-2-en-1-one.

Project description:In the title mol-ecule, C(17)H(11)Cl(2)N(3)O, the C=C bond connecting the triazole and 4-chloro-phenyl groups adopts a Z geometry. The dihedral angles formed by the triazole ring and the 4-chloro substituted benzene rings are 67.3?(1) and 59.1?(1)°. The dihedral angle between the two benzene rings is 73.5?(1)°.

| S-EPMC3344571 | biostudies-literature

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