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Porous Polymer for Heterogeneous Catalysis
Published in Inamuddin, Mohd Imran Ahamed, Rajender Boddula, Porous Polymer Science and Applications, 2022
Vivek Mishra, Simran Aggarwal, Shubham Pandey
In many organic reactions, organic ligands control the catalytic performance of a catalyst, it is because of their electronic properties, steric effect, hydrophilic/hydrophobic nature, and acid/base/redox properties.42 Organic ligands can be immobilized over POPs as they have advantages of both organic and inorganic supports. Since phenanthroline binds strongly with copper and can be used in copper-catalyzed reactions, it can be an effective polymeric ligand that has the advantage of recyclability and low leaching of metals. Sun et al.43 synthesized a series of phenanthroline-based porous polymers (POP-Phen) via reaction of N-(1,10-phenanthroline-5-yl)acrylamide with divinylbenzene in solvothermal conditions, followed by coordination with Cu (Scheme 6.9). N2 sorption, SEM and TEM images, and thermogravimetric analysis verify that the polymer possesses large pore volume and surface area, hierarchical porosity, and outstanding thermal and chemical stability.
Speciation study of nickel(II)-1,10-phenanthroline-amino acid ternary complexes in 1.0 M NaCl at 25 °C
Published in Journal of Coordination Chemistry, 2023
Eduardo Giraud, Mary Lorena Araujo, Edgar Del Carpio, Vito Lubes
1,10-Phenanthroline (Phen) is a heterocyclic N,N’ bidentate donor ligand with a planar aromatic structure that forms stable complexes with transition metals. It acts as a strong chelating ligand, forming five-membered chelated ring complexes. It coordinates through its two nitrogen atoms, preferentially to intermediate or hard metal ions. The planar structure of Phen complexes enables intercalation with DNA and RNA, allowing for cytotoxic activity [5–11].
A Hirshfeld surface analysis, crystal structure, and physicochemical studies of a new Cu(II) complex with the 1,10-phenanthroline ligand
Published in Journal of Coordination Chemistry, 2018
Wijdene Nbili, Kamel Kaabi, Frédéric Lefebvre, Wataru Fujita, Christian Jelsch, Cherif ben Nasr
Transition metal complexes represent a growing subject during recent years because of their enormous biological significance as well as unique catalytic, photochemical, and optical properties [1–5]. Recently synthesized transition metal complexes have been used for the study of biological activities viz. antibacterial, antifungal, toxicity, and DNA interaction [6–11]. The d9 configuration of the Cu(II) cation favors either square planar, square-pyramidal or square-bipyramidal geometries. Chemistry of copper complexes has attracted the attention of many inorganic chemistry groups around the world because of the fascinating reactivity exhibited by the resultant complexes and the nature of the ligands that dictates the properties of those complexes [12–15]. Copper(II) complexes have been known for their wide range of applications in biochemistry, photochemistry, and photophysics [16]. The studies on copper-1,10-phenanthroline (phen) complexes have become increasingly important since these types of complexes found use as photo/redoxactive components of supramolecular assemblies [17–20], DNA intercalators [21, 22], and DNA footprints [23]. The damage of copper-phen complex on DNA [8, 9] has been used as a probe in a new vivo techniques in studying interactions of DNA and proteins in whole cells [23]. Recently, a great deal of attention has been paid to the recognition of DNA secondary structure by this class of complex, which is an important issue for biochemistry and biophysics [24]. Bidentate neutral NN ligand systems such as 1,10-phenanthroline show a high ability to donate towards a wide range of transition metal ions giving rise to very stable complexes [25–37]. 1,10-Phenanthroline is a bidentate chelating ligand for metal ions and has made great contributions to the growth of coordination chemistry [21, 38, 39]. 1,10-Phenanthroline, which has two aromatic nitrogen atoms whose unshared electron pairs are excellently located to act together in binding to metal ions, is known as a good π-acceptor [40, 41] and has been extensively used as a ligand in both analytical and preparative coordination chemistry [42]. Also, the binding of 1,10-phenanthroline is characterized by low-energy delocalized π*-orbitals which increases the possibility of modification in their optical, physico-chemical, and electrochemical properties as well as structural characteristics. To contribute to the study of Cu-(phen) complexes that has significance in medicinal chemistry, having excellent nuclease properties [43] and being potent cytotoxic agents in the submicromolar range [44] we report here the synthesis and characterization of a new Cu-(phen) complex [Cu(H2PO4)2(phen)H2O]·2H2O. The Hirshfeld surface analysis has been performed to completely characterize the intermolecular interactions and explain the crystalline architecture. Furthermore, the complex was investigated by various spectroscopic studies and DFT calculations have been used for the interpretation of the vibrational results.