Nitrochloranilic acid: a novel asymmetrically substituted quinoid bridging ligand for design of coordination polymers

Abstract

A series of alkali salts and transition metal complexes of a novel asymmetrically substituted quinoid ligand, 3-nitro-6-chloro-2,5-dihydroxyquinone (nitrochloranilic acid, H2NCA) was prepared and characterised. The nitrochloranilate moiety readily binds to...

Structural diversity of cadmium coordination polymers based on an extended anilate-type ligand

“…These include the substitution of the aromatic ring of the anilate ligand with various substituents; 20 the use of different solvents to synthesize CPs, [21][22][23][24][25][26][27] or the directed substitution of the coordinated solvent at the metal atom; 28 the construction of homo-and heterometallic systems; 14,23,[29][30][31][32][33][34] the introduction of additional "counterions" during framework formation, 12,[35][36][37][38] and the use of additional neutral ligands. [39][40][41][42][43][44][45] This results in the preparation of versatile derivatives with a wide range of potential applications in various fields. Coordination polymerbased materials can serve as gas adsorbents, [46][47][48] luminescent agents, 9,49 electrochemical or photophysical sensors, 4,50 and electroconductive 5,[51][52][53][54][55][56][57][58] and magnetic materi...…”

“…Coordination polymerbased materials can serve as gas adsorbents, [46][47][48] luminescent agents, 9,49 electrochemical or photophysical sensors, 4,50 and electroconductive 5,[51][52][53][54][55][56][57][58] and magnetic materials. 29,59,60 The creation of new anilate-type ligands for the synthesis of CPs, 3,44,59 as well as the preparation of mixed-ligand CPs containing two anionic ligands, 49,[61][62][63][64][65][66][67] is a promising area of research, as it opens the possibility of synthesizing compounds with new topologies and properties. One of the prospective ditopic ligands for the synthesis of new derivatives is the closest analog of anilate ligands containing an extended π-system -4,4′-(1,4-phenylylenebis(azanylylidene))bis (3,6-di-tertbutyl-2-hydroxycyclohexa-2,5-dienone) (H 2 L).…”

“…The creation of new anilate-type ligands for the synthesis of CPs, 3,44,59 as well as the preparation of mixed-ligand CPs containing two anionic ligands, 49,61–67 is a promising area of research, as it opens the possibility of synthesizing compounds with new topologies and properties. One of the prospective ditopic ligands for the synthesis of new derivatives is the closest analog of anilate ligands containing an extended π-system – 4,4′-(1,4-phenylylenebis(azanylylidene))bis(3,6-di- tert -butyl-2-hydroxycyclohexa-2,5-dienone) ( H 2 L ).…”

Energy transfer in metal-exchange binuclear complexes covalently linked by asymmetric ligands

“…18 These asymmetric bridging ligands played pivotal roles in the interaction between the metal units of Ru(II)/Os(II) heterometallic complexes. [19][20][21][22] To the best of our knowledge, hardly any research attention had been devoted to the synthesis of Ru(II)/ Os(II) binuclear complexes with the exchange of Ru(II) and Os (II) metal centres. Therefore, the main investigation of heterometallic complexes C5, [Os(bpy) 2 (µ-L1)Ru(bpy) 2 ](PF 6 ) 4 , and C6, [Os(bpy) 2 (µ-L2)Ru(bpy) 2 ](PF 6 ) 4 (Scheme 1), bridged by covalent ligands L1 and L2, respectively, was of great interest for studying photoinduced electron and energy transfer processes.…”

Glycols in the Synthesis of Zinc-Anilato Coordination Polymers

“…It has a direct effect on the properties of MOFs based on them [22]. In this regard, the study of new ancillary ligands with various substituents in the quinoid ring is one of the promising tasks for expanding the range of properties of redox-active MOFs [4,23,24]. The study of 2,5-dihydroxy-3,6-di-tert-butyl-para-quinone (H 2 pQ) [25] as a ditopic ligand in the synthesis of metal-organic frameworks started recently [26][27][28].…”