Synthesis and crystal structure of a three-dimensional network coordination polymer: [Pb(C5H4NCOO)2(H2O)] n

2006 ◽  
Vol 59 (13) ◽  
pp. 1477-1482 ◽  
Author(s):  
Jian Zhou ◽  
Yu-Zhou Yuan ◽  
Xing Liu ◽  
Dong-Qing Li ◽  
Zhen Zhou ◽  
...  
2004 ◽  
Vol 59 (9) ◽  
pp. 992-998 ◽  
Author(s):  
Christian Näther ◽  
Andreas Beck

Reaction of silver(I) bromide with ethylenediamine (en) leads to the formation of the 1:1 compound poly[AgBr(μ2-en-N,N’)] (I). In the crystal structure the silver atoms of AgBr dimers are connected to two bridging bromine atoms and two nitrogen atoms of different en ligands. The dimers are thus connected by the ligands into layers via μ-N,N’ coordination. In the 2:1 coordination polymer poly[(AgBr)2(μ2-en-N,N’)] (II) a three-dimensional AgBr substructure occur which consists of helical AgBr chains that are connected via peripheral Ag-Br contacts into a three-dimensional network that contains large channels. The en ligands are situated in these channels bridging the Ag atoms. From solution this compound cannot be obtained as a pure phase, since compound I is always formed as the major phase. On heating the 1:1 compound I in a thermobalance the sample mass decreases slowly and several mass steps are observed, which are not fully resolved. If the reaction is stopped at 230°C, pure AgBr has formed. At 115°C only traces of compound II are found. The major phase consists of an as yet unidentified ligand poor compound.


2012 ◽  
Vol 67 (1) ◽  
pp. 1-4
Author(s):  
Dirk Mahlmeister ◽  
Elisabeth Irran

The new telluric acid adduct (RbCl)3 ・ Te(OH)6 was prepared by dissolving RbCl and Te(OH)6 in the molar ratio of 3 : 1 in deionized water at r. t. and slow evaporation of the solvent in air. The crystal structure of the colorless crystals was determined with single-crystal X-ray diffraction (trigonal space group: R3̄c (no. 167), a = 14.4392(8), c = 10.4301(16) Å , Z = 6). In (RbCl)3 ・ Te(OH)6, the rubidium atom is surrounded by five chlorine and four oxygen atoms in form of an irregular tricapped trigonal prism. Each tellurium atom is octahedrally surrounded by six oxygen atoms. The Te(OH)6 octahedra and the RbCl5O4 polyhedra are linked to a dense three-dimensional network which is additionally strengthened by hydrogen bonds.


2019 ◽  
Vol 75 (7) ◽  
pp. 1001-1004 ◽  
Author(s):  
Bougar Sarr ◽  
Abdou Mbaye ◽  
Wally Diallo ◽  
Cheikh Abdoul Khadir Diop ◽  
Mamadou Sidibe ◽  
...  

The title compound, hexakis(2-methyl-1H-imidazol-3-ium) heptamolybdate 2-methyl-1H-imidazole disolvate dihydrate, (C4H7N2)6[Mo7O24]·2C4H6N2·2H2O, was prepared from 2-methylimidazole and ammonium heptamolybdate tetrahydrate in acid solution. The [Mo7O24]6− heptamolybdate cluster anion is accompanied by six protonated (C4H7N2)+ 2-methylimidazolium cations, two neutral C4H6N2 2-methylimidazole molecules and two water molecules of crystallization. The cluster consists of seven distorted MoO6 octahedra sharing edges or vertices. In the crystal, the components are linked by N—H...N, N—H...O, O—H...O, N—H...(O,O) and O—H...(O,O) hydrogen bonds, generating a three-dimensional network. Weak C—H...O interactions consolidate the packing.


2015 ◽  
Vol 70 (4) ◽  
pp. 215-219 ◽  
Author(s):  
Wei Li ◽  
Chang-Hong Li ◽  
Ying-Qun Yang ◽  
Heng-Feng Li

AbstractA new copper(II) coordination polymer [Cu2(C5H4NCOO)2(C7H5N4)2]n (1) has been synthesized with 4-pyridinecarboxylate and 3-(pyridin-2-yl)-1,2,4-triazolyl ligands. The crystal structure shows that two neighboring copper(II) ions are coordinated with two deprotonated (anionic) 3-(pyridin-2-yl)-1,2,4-triazole ligands to form a binuclear structure. Adjacent binuclear units are linked by 4-pyridinecarboxylate anions to form a three-dimensional network structure. The magnetic, fluorescent, and electrochemical properties and thermal stability of 1 were studied. The results show that 1 exhibits antiferromagnetic interaction, and upon excitation at 318 nm, it has an intense fluorescent emission at approximately 430 nm. The electron transfer of 1 is irreversible in electrode reactions. The thermogravimetric analysis shows that 1 is stable below 240 °C.


2014 ◽  
Vol 70 (5) ◽  
pp. m159-m159
Author(s):  
Bruno Giuseppe ◽  
Nicolò Francesco ◽  
Grassi Giovanni ◽  
Saccà Alessandro ◽  
Viviana Mollica Nardo

In the title compound, [Co(C10H16O4)]n, the CoIIatom is bonded in a slightly distorted tetrahedral environment by four O atoms from the bridging sebacate dications, comprising two separate half-ligands which lie across crystallographic inversion centres. In the three-dimensional network coordination polymer, there are two different spatial extensions of CoIIatoms, one with the CoIIatoms lying parallel to (100) [Co...Co = 4.653 (1) Å], the other lying parallel to (010) [Co...Co = 4.764 (1) Å].


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