Synthesis and structural characterization of silver(i), copper(i) coordination polymers and a helicate palladium(ii) complex of dipyrrolylmethane-based dipyrazole ligands: the effect of meso substituents on structural formation

2015 ◽  
Vol 44 (19) ◽  
pp. 9091-9102 ◽  
Author(s):  
Tapas Guchhait ◽  
Bhagyasree Barua ◽  
Aritra Biswas ◽  
Biswanath Basak ◽  
Ganesan Mani

A striking difference in the structures of silver complexes was observed because of the different substituents at the meso carbon atom of the dipyrrolylmethane-based ligand.

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 111 ◽  
Author(s):  
Paula Cruz ◽  
Estefania Fernandez-Bartolome ◽  
Miguel Cortijo ◽  
Patricia Delgado-Martínez ◽  
Rodrigo González-Prieto ◽  
...  

Herein, we describe the preparation of heteronuclear dirhodium-silver complexes by reaction between molecular Rh(II)-Rh(II) compounds [Rh2(μ-O2CR)4L2] (R = Me, Ph (1), CH2OEt (2); L = solvent molecules) with paddlewheel structure and PPh4[Ag(CN)2]. One-dimensional coordination polymers of (PPh4)n[Rh2(μ-O2CR)4Ag(CN)2]n (R = Me (3), Ph (4), CH2OEt (5)) formula have been obtained by replacement of the two labile molecules in the axial positions of the paddlewheel structures by a [Ag(CN)2]− bridging unit. The crystal structures of 3–5 display a similar arrangement, having anionic chains with a wavy structure and bulky (PPh4)+ cations placed between the chains. The presence of the (PPh4)+ cations hinders the existence of intermolecular Ag-Ag interactions although several C-H····π interactions have been observed. A similar reaction between [Rh2(μ-O2CCMe3)4(HO2CCMe3)2] and PPh4[Ag(CN)2] led to the molecular compound (PPh4)2{Rh2(μ-O2CCMe3)4[Ag(CN)2]2} (6) by replacement of the axial HO2CCMe3 ligands by two [Ag(CN)2]− units. The trimethylacetate ligand increases the solubility of the complex during the crystallization favouring the formation of discrete heteronuclear species.


2019 ◽  
Vol 48 (24) ◽  
pp. 8731-8739 ◽  
Author(s):  
Elena Borrego ◽  
Antonio I. Nicasio ◽  
Eleuterio Álvarez ◽  
Francisco Montilla ◽  
José Manuel Córdoba ◽  
...  

Two-dimensional homochiral coordination polymers of sodium, silver, copper and zinc were obtained with 2alkyl,2-(1H-imidazol-1-yl)acetate anions as bridging ligands.


2009 ◽  
pp. 8248 ◽  
Author(s):  
Jie-Hui Yu ◽  
Yan-Chun Zhu ◽  
Di Wu ◽  
Yang Yu ◽  
Qin Hou ◽  
...  

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