scholarly journals From Zero- to Three-Dimensional Heterobimetallic Coordination Polymers with the [Pt{SSC-N(CH2COO)2}2]4– Metalloligand

2020 ◽  
Author(s):  
Phil Liebing ◽  
Florian Oehler ◽  
Juliane Witzorke ◽  
Marten Schmeide
Keyword(s):  
Solid State ◽  
Ambient Temperature ◽  
Coordination Polymers ◽  
Structure Determination ◽  
Three Dimensional ◽  
Antiferromagnetic Interaction ◽  
Straightforward Manner ◽  
Thermal Stabilities ◽  
Metal Centers ◽  
X Ray

<br>Heterobimetallic compounds of the type M’2[Pt(L)2] (L = N-dithioato-iminodiacetate, {SSC-N(CH2COO)2}3–) containing different bivalent, oxophilic metals M’ were prepared in a straightforward manner from [Pt(H2L)2] and the respective metal acetates, M’(OAc)2 (M’ = Mg–Ba, M–Cu, Cd). X-ray structure determination revealed that the products exist as zero- (Mg), one- (Mn), two- (Fe, Co, Ni, Cd), or three-dimensional (Sr) assemblies in the solid state. As a result, the water solubilities and thermal stabilities of the products cover much wider ranges than it has been seen with M’2[M(L)2] compounds having different thiophilic metal centers (M = Ni, Pd, Pt). While most of the compounds show a typical diamagnetic (Mg–Ba, Cd) or paramagnetic (Mn, Co, Ni, Cu) behaviour at ambient temperature, for Fe2[Pt(L)2] ·4 H2O an antiferromagnetic interaction of the Fe atoms is assumed. <br>

scholarly journals From Zero- to Three-Dimensional Heterobimetallic Coordination Polymers with the [Pt{SSC-N(CH2COO)2}2]4– Metalloligand

2020 ◽  
Author(s):  
Phil Liebing ◽  
Florian Oehler ◽  
Juliane Witzorke ◽  
Marten Schmeide
Keyword(s):  
Solid State ◽  
Ambient Temperature ◽  
Coordination Polymers ◽  
Structure Determination ◽  
Three Dimensional ◽  
Antiferromagnetic Interaction ◽  
Straightforward Manner ◽  
Thermal Stabilities ◽  
Metal Centers ◽  
X Ray

<br>Heterobimetallic compounds of the type M’2[Pt(L)2] (L = N-dithioato-iminodiacetate, {SSC-N(CH2COO)2}3–) containing different bivalent, oxophilic metals M’ were prepared in a straightforward manner from [Pt(H2L)2] and the respective metal acetates, M’(OAc)2 (M’ = Mg–Ba, M–Cu, Cd). X-ray structure determination revealed that the products exist as zero- (Mg), one- (Mn), two- (Fe, Co, Ni, Cd), or three-dimensional (Sr) assemblies in the solid state. As a result, the water solubilities and thermal stabilities of the products cover much wider ranges than it has been seen with M’2[M(L)2] compounds having different thiophilic metal centers (M = Ni, Pd, Pt). While most of the compounds show a typical diamagnetic (Mg–Ba, Cd) or paramagnetic (Mn, Co, Ni, Cu) behaviour at ambient temperature, for Fe2[Pt(L)2] ·4 H2O an antiferromagnetic interaction of the Fe atoms is assumed. <br>

A calcium-bridged porphyrin coordination network

2002 ◽  
Vol 06 (06) ◽  
pp. 377-381 ◽  
Author(s):  
Margaret E. Kosal ◽  
Jun-Hong Chou ◽  
Kenneth S. Suslick
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Coordination Polymers ◽  
Three Dimensional ◽  
Pyridine Molecule ◽  
Two Dimensional ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network ◽  
Polymeric Framework

The hydrothermal assembly of a very stable porphyrin network with nanoscale cavities is described. A tightly packed and interpenetrated, linear polymeric framework was observed in the solid-state X-ray structure of freebase 5,10,15,20-tetrakis-(4-carboxyphenyl)porphyrin coordinated to calcium(II) ions. Strong hydrogen-bonding interactions between the coordination polymers form a two-dimensional network. Perpendicular bands interpenetrate generating an unusual three-dimensional box that clathrates a pyridine molecule.

Synthesis, structure and characterization of two new metal–organic coordination polymers based on the ligand 5-iodobenzene-1,3-dicarboxylate

2015 ◽  
Vol 71 (9) ◽  
pp. 776-782 ◽  
Author(s):  
Xu Zhang ◽  
Lei Zhang ◽  
Meng-Jie Wang ◽  
Kou-Lin Zhang
Keyword(s):  
Solid State ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Network Architecture ◽  
Coordination Mode ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Secondary Building Units

Two new coordination polymers (CPs) formed from 5-iodobenzene-1,3-dicarboxylic acid (H2iip) in the presence of the flexible 1,4-bis(1H-imidazol-1-yl)butane (bimb) auxiliary ligand, namely poly[[μ2-1,4-bis(1H-imidazol-1-yl)butane-κ2N3:N3′](μ3-5-iodobenzene-1,3-dicarboxylato-κ4O1,O1′:O3:O3′)cobalt(II)], [Co(C8H3IO4)(C10H14N4)]nor [Co(iip)(bimb)]n, (1), and poly[[[μ2-1,4-bis(1H-imidazol-1-yl)butane-κ2N3:N3′](μ2-5-iodobenzene-1,3-dicarboxylato-κ2O1:O3)zinc(II)] trihydrate], {[Zn(C8H3IO4)(C10H14N4)]·3H2O}nor {[Zn(iip)(bimb)]·3H2O}n, (2), were synthesized and characterized by FT–IR spectroscopy, thermogravimetric analysis (TGA), solid-state UV–Vis spectroscopy, single-crystal X-ray diffraction analysis and powder X-ray diffraction analysis (PXRD). The iip2−ligand in (1) adopts the (κ1,κ1-μ2)(κ1, κ1-μ1)-μ3coordination mode, linking adjacent secondary building units into a ladder-like chain. These chains are further connected by the flexible bimb ligand in atrans–trans–transconformation. As a result, a twofold three-dimensional interpenetrating α-Po network is formed. Complex (2) exhibits a two-dimensional (4,4) topological network architecture in which the iip2−ligand shows the (κ1)(κ1)-μ2coordination mode. The solid-state UV–Vis spectra of (1) and (2) were investigated, together with the fluorescence properties of (2) in the solid state.

Synthese der Amide M[N(SiMetBu2)(SitBu3)] (M = Li, Na) durch N2-Eliminierung aus den Triazeniden M[tBu3SiNNNSiMetBu2] (M = Li, Na) / Synthesis of the Amides M[N(SiMetBu2)(SitBu3)] (M = Li, Na) by N2-Elimination Reaction of the Triazenides M[tBu3SiNNNSiMetBu2] (M= Li, Na)

2007 ◽  
Vol 62 (10) ◽  
pp. 1285-1290 ◽  
Author(s):  
Hans-Wolfram Lerner ◽  
Inge Sänger ◽  
Kurt Polborn ◽  
Michael Bolte ◽  
Matthias Wagner
Keyword(s):  
Solid State ◽  
Ambient Temperature ◽  
Benzene Solution ◽  
Elimination Reaction ◽  
X Ray

The thermolabile triazenides M[tBu3SiNNNSiMetBu2] (M = Li, Na) are accessible from the reaction of tBu2MeSiN3 with the silanides MSitBu3 (M = Li, Na) at −78 °C in THF. At r. t. N2 elimination from the triazenides M[tBu3SiNNNSiMetBu2] (M = Li, Na) takes place with the formation of M[N(SiMetBu2)(SitBu3)] (M = Li, Na). X-Ray quality crystals of Li(THF)[N(SiMetBu2)(SitBu3)] (orthorhombic, Pna21) are obtained from a benzene solution at ambient temperature. In contrast to the structures of the unsolvated silanides MSitBu3 (M = Li, Na), the THF adduct Li(THF)3SitBu3 is monomeric in the solid state (orthorhombic, Pna21).

Metal-Controlled Assembly Tuning Coordination Polymers with Flexible 2-(1H-imidazole-1-yl)acetic Acid (Hima)

2006 ◽  
Vol 59 (9) ◽  
pp. 647 ◽  
Author(s):  
Yong-Tao Wang ◽  
Gui-Mei Tang ◽  
Da-Wei Qin
Keyword(s):  
Coordination Polymers ◽  
Weak Interactions ◽  
Critical Role ◽  
Three Dimensional ◽  
Supramolecular Network ◽  
Water Medium ◽  
New Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Supramolecular Networks

Three new inorganic–organic coordination polymers based on a versatile linking unit 2-(1H-imidazole-1-yl)acetate (Hima) and divalent Mn(ii), Ni(ii), and Cu(ii) ions, exhibiting two kinds of two dimensionalities with different topological structures, have been prepared in water medium and structurally characterized by single-crystal X-ray diffraction analysis. Reaction of MnCl2·4H2O and Ni(NO3)2·6H2O with Hima yielded neutral two-dimensional (2D) coordination polymers [M(ima)2]n, M = Mn(ii) 1, and Ni(ii) 2 with isostructural 2D coordination polymers possessing (3,6) topology structures, which further stack into three-dimensional (3D) supramolecular networks through C–H···O weak interactions. However, when Cu(NO3)2·4H2O was used, a neutral 2D coordination polymer [Cu(ima)2]n 3 consisting of rhombus units was generated, which showed a 3D supramolecular network through C–H···O weak interactions. Among these polymers, the building block ima anion exhibits different coordination modes. These results indicate that the versatile nature of this flexible ligand, together with the coordination preferences of the metal ions, plays a critical role in construction of these novel coordination polymers. Spectral and thermal properties of these new materials have also been investigated.

scholarly journals Tautomerism and Self-Association in the Solution of New Pinene-Bipyridine and Pinene-Phenanthroline Derivatives

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 298
Author(s):  
Atena B. Solea ◽  
Ivan Cornu ◽  
Vera Deneva ◽  
Aurelien Crochet ◽  
Katharina M. Fromm ◽  
...  
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
Structure Determination ◽  
Tautomeric Equilibrium ◽  
Dft Studies ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Self Association

Two novel pinene-type ligands have been synthesized and their tautomeric and self-associating behavior studied in solution and in the solid state. The first ligand, an acetylated derivative of 5,6-pinene-bipyridine, displays keto-enol tautomerism in solution. This tautomeric equilibrium was studied by NMR and UV-Vis spectroscopy in various solvents, and the results were compared with the ones obtained through DFT calculations. The second ligand was obtained by an unusual oxidation of the phenanthroline unit of a pinene-phenanthroline derivative. This compound exists as a single tautomer in solution and aggregates both in solution (as observed by NMR) and in the solid state through H-bonding as observed by X-ray structure determination and confirmed by DFT studies.

scholarly journals Different Benzendicarboxylate-Directed Structural Variations and Properties of Four New Porous Cd(II)-Pyridyl-Triazole Coordination Polymers

2020 ◽  
Vol 8 ◽  
Author(s):  
Ying Zhao ◽  
Jin Jing ◽  
Ning Yan ◽  
Min-Le Han ◽  
Guo-Ping Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Coordination Polymers ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Gas Sorption ◽  
Structural Variations ◽  
Benzenedicarboxylic Acid ◽  
Topological Framework ◽  
The Stability

Four new different porous crystalline Cd(II)-based coordination polymers (CPs), i. e., [Cd(mdpt)2]·2H2O (1), [Cd2(mdpt)2(m-bdc)(H2O)2] (2), [Cd(Hmdpt)(p-bdc)]·2H2O (3), and [Cd3(mdpt)2(bpdc)2]·2.5NMP (4), were obtained successfully by the assembly of Cd(II) ions and bitopic 3-(3-methyl-2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole (Hmdpt) in the presence of various benzendicarboxylate ligands, i.e., 1,3/1,4-benzenedicarboxylic acid (m-H2bdc, p-H2bdc) and biphenyl-4,4′-bicarboxylate (H2bpdc). Herein, complex 1 is a porous 2-fold interpenetrated four-connected 3D NbO topological framework based on the mdpt− ligand; 2 reveals a two-dimensional (2D) hcb network. Interestingly, 3 presents a three-dimensional (3D) rare interpenetrated double-insertion supramolecular net via 2D ···ABAB··· layers and can be viewed as an fsh topological net, while complex 4 displays a 3D sqc117 framework. Then, the different gas sorption performances were carried out carefully for complexes 1 and 4, the results of which showed 4 has preferable sorption than that of 1 and can be the potential CO2 storage and separation material. Furthermore, the stability and luminescence of four complexes were performed carefully in the solid state.

[(TM EDA)2Li4Cl4(H2O)2]·2 TMEDA: stabförmige vierkernige Li-Komplexe verknüpft durch TMEDA / [(TM EDA)2Li4Cl4(H2O)2]·2 TMEDA: Stick-Like Tetranuclear Li Complexes Connected by TMEDA

1995 ◽  
Vol 50 (9) ◽  
pp. 1348-1352 ◽  
Author(s):  
Bert Werner ◽  
Bernhard Neumüller
Keyword(s):  
Solid State ◽  
Ir Spectroscopy ◽  
Structure Determination ◽  
Title Compound ◽  
X Ray

AbstractThe title compound 1 was synthesized by the reaction of LiCl with TM EDA (N,N,N′,N′- tetramethylethylendiamine) and water at 120 °C in boiling TM EDA. 1 was crystallized at - 30 °C as colorless crystals and characterized by NMR and IR spectroscopy as well as by an X-ray structure determination. 1 is a polymer in the solid state, built up by an alternating arrangement of stick-like tetranuclear Li complexes and two TMEDA molecules. The complexes and the TMEDA molecules are connected by hydrogen bridges in infinite chains.

Flexible N-Donor Ligands Direct the Structural Characteristics of CoII Complexes: Syntheses, Structures, and Magnetic Properties

2019 ◽  
Vol 72 (5) ◽  
pp. 341 ◽  
Author(s):  
Yu-Ting Yang ◽  
Chang-Zheng Tu ◽  
Xiao-Lin Xu ◽  
Li-Li Xu ◽  
Bang-Ling Yan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Coordination Polymers ◽  
Structural Characteristics ◽  
Donor Ligands ◽  
X Ray Diffraction ◽  
Thermal Stabilities ◽  
Ancillary Ligands ◽  
X Ray ◽  
Elemental Analyses ◽  
Bilayered Structure

Solvothermal reactions of 3,3′,5,5′-biphenyltetracarboxylic acid (H4BPTC) and cobalt(ii) ions in the presence of two different flexible N-donor ancillary ligands afford two novel coordination polymers, {[Co(BPTC)0.5(bix)]·H2O}n (1), {[Co(BPTC)0.5(bpp)]·3H2O}n (2) (bix=1,4-bis(imidazol-1-ylmethyl)benzene; bpp=1,3-bis(4-pyridyl)propane). Their structures have been determined by elemental analyses, IR spectra, single-crystal X-ray diffraction analyses, and powder X-ray diffraction. The pillared layered framework of 1 can be simplified to a (4,6)-connected net with a Schläfli symbol of (44·62)(44·69·82). Complex 2 manifests a bilayered structure, and can be simplified to a (4,4)-connected net with a Schläfli symbol of (55·8)(54·62). The thermal stabilities of both complexes and the magnetic behaviours of 1 are also discussed.

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