1035568-97-8Relevant articles and documents
The synthesis and characterization of new nickel complexes with unusual coordination modes
Seals, William,Arman, Hadi,Batha, Steven,Musie, Ghezai T.
, p. 16 - 25 (2016)
Two mononickel complexes, K2[Ni(Hccdp)](CH3OH)·8H2O (1), and [Ni(H2O)6][Ni(H2ccdp)(H2O)2]2·12H2O (2); a dinickel complex, K2[Ni2
Synthesis, structure and properties of new heterometallic octanuclear Li2Na2Cu4 and decanuclear Li2Zn8 complexes
Haldar, Shobhraj,Dutta, Nityananda,Vijaykumar, Gonela,Das, Arpan,Carrella, Luca,Oliver, Allen,Bera, Manindranath
, p. 58 - 66 (2019)
A carboxylate containing polydentate ligand in combination with exogeneous succinate (suc) has been used to stabilize heterometallic octanuclear [Li2Na2Cu4(cpdp)2(suc)2(CH3OH)2(H2O)4]Cl2·6H2O (1) and decanuclear Na(H3O)2[Li2Zn8(cpdp)4(suc)2(H2O)4]Cl2Br3·6MeOH·19H2O (2) complexes. The reaction of ligand H3cpdp (H3cpdp = N,N'-bis[2-carboxybenzomethyl]-N,N'-bis[2-pyridylmethyl]-1,3-diaminopropan-2-ol) with stoichiometric amounts of CuCl2/sodium succinate, and ZnCl2/sodium succinate, allowed isolation of complexes 1 and 2, respectively. Analyses of single crystal X-ray structures indicate that complex 1 is capped by two [Cu2(cpdp)]+ molecular building units and two succinate linkers, while complex 2 is overlaid by four [Zn2(cpdp)]+ molecular building units and two succinate linkers. Whereas complex 1 shows monodentate terminal and tridentate μ3:η2:η1:η1 bridging coordination of carboxylate, and μ4:η2:η1:η1:η1 bridging mode of succinate, complex 2 displays monodentate terminal and anti-anti μ2:η1:η1 bidentate bridging coordination of carboxylate, and μ4:η1:η1:η1:η1 bridging mode of succinate. To our knowledge, 1 is the first example of copper/lithium/sodium-based hetero-octanuclear complex with any class of bridging or non-bridging ligand showing three different binding modes of carboxylates. Again, 2 is also the first example of a hetero-decanuclear metallomacrocyclic complex with any class of bridging or non-bridging ligand combining both lithium and zinc. Variable temperature magnetic investigation of 1 discloses sensible antiferromagnetic interactions intermediated among the copper centers. Thermal behavior of 1 and 2 has been examined by thermogravimetric analysis indicating that the complexes are stable up to ～430 °C.
Synthesis and characterization of mono- and μ6-sulfato hexanuclear zinc complexes of a new symmetric dinucleating ligand
Curtiss, Ashley B. S.,Bera, Manindranath,Musie, Ghezai T.,Powell, Douglas R.
, p. 2717 - 2724 (2008)
Zinc complexes of a new symmetric dinucleating ligand, N,N′-Bis[2- carboxybenzomethyl]-N,N′-Bis[carboxymethyl]-1,3-diaminopropan-2-ol (H 5ccdp) with mixed donating groups, have been studied in the solid state as well as in solution. In methanol, the reaction of stoichiometric and substoichiometric amounts of Zn(ClO4)2?6H 2O and the ligand H5ccdp, in the presence of K 2CO3 or Et3N, afforded a mononuclear zinc complex, [Zn(H2O)6][Zn(H2ccdp)(H 2O)2]2?12H2O (1). The solid state structure of 1 contains two units of the zinc-ligand anion, [Zn(H 2ccdp)(H2O)2]-, and one [Zn(H 2O)6]2+ counter cation. The Zn(II) center of the anion is in a distorted octahedral geometry. However, in methanol, the reaction of ZnSO4?7H2O and the ligand H 5ccdp in the presence of NaOH afforded a unique μ6- sulfato hexanuclear zinc complex, Na6[Zn6(ccdp) 3(μ6-SO4)](OH)?10.5H2O (2). The structure of 2 contains a [ZnII6(μ6- SO4)] core unit which is held together by three heptadentate bridging ligands, ccdp5-. Three of the Zn(II) centers are in highly distorted square pyramidal geometry, the other three Zn(II) centers are in a distorted octahedral geometry. The Royal Society of Chemistry 2008.
Crystal structure of gluconate bound iron(iii) complex: Synthesis, characterization and redox properties of the complex in aqueous solution
Stewart, Christopher D.,Arman, Hadi,Benavides, Brenda,Musie, Ghezai T.
, p. 15088 - 15096 (2018)
A novel tetra-iron(iii) complex, K6[Fe4(ccdp)2(μ-O)(μ-OH)(D-GluA)2](NO3)3·10H2O (K6[1](NO3)3·10H2O) with two gluconato and two N,N′-bis[2-carboxobenzomethyl]-N,N′-bis[carboxomethyl]-1,3-diaminopropan-2-oxy (ccdp5-) ligands has been synthesized and fully characterized using different techniques including single crystal X-ray crystallography. K6[1](NO3)3·10H2O showed stability aqueous solution, in biological samples such as human and fetal bovine serum (HS and FBS) and cell cultures such as phosphate buffer saline and minimum essential medium (PBS and MEM) using UV-Vis spectroscopy at room temperature and 37 °C. The redox behavior of the complex was studied using cyclic and square wave voltammetries in aqueous and DMF solutions. Furthermore, magnetic study using electron paramagnetic resonance spectroscopy and Guoy balance magnetic moment measurements indicated antiferromagnetic coupling among the metal centers of the (μ-O)(μ-OH) bridged tetra-iron(iii) anion core of the complex. Electrochemical studies of the K6[1](NO3)3·10H2O in aqueous and DMF solutions using cyclic and square-wave voltammetries revealed the presence of multi-accessible electron metal-based redox events.
Synthesis, structure, spectroscopic characterization, and protein binding affinity of new water-soluble hetero- and homometallic tetranuclear [Cu II2ZnII2] and [CuII 4] clusters
Patra, Ayan,Sen, Tamal K.,Ghorai, Atanu,Musie, Ghezai T.,Mandal, Swadhin K.,Ghosh, Utpal,Bera, Manindranath
, p. 2880 - 2890 (2013)
Two new water-soluble hetero- and homometallic tetranuclear clusters, Na4[Cu2Zn2(ccdp)2(μ-OH) 2]·CH3OH·6H2O (1) and K 3[Cu4(ccdp)2(μ-OH)(μ-OH 2)]·14H2O (2), have been synthesized in methanol-water at room temperature by exploiting the flexibility, chelating ability, and bridging potential of a carboxylate-rich dinucleating ligand, N,N′-bis(2-carboxybenzomethyl)-N,N′-bis(carboxymethyl)-1,3 diaminopropan-2-ol (H5ccdp). Complex 1 is obtained through the self-assembly of two monoanionic [CuZn(ccdp)]-fragments, which are, in turn, exclusively bridged by two μ-OH-groups. Similarly, complex 2 is formed through the self-assembly of two monoanionic [Cu 2(ccdp)]- species exclusively bridged by one μ-OH - and one μ-OH2 groups. Complexes 1 and 2 are fully characterized in the solid state as well as in solution using various analytical techniques including a single-crystal X-ray diffraction study. The X-ray crystal structure of 1 reveals that two CuII centers are in a distorted square-pyramidal geometry, whereas two ZnII centers are in a distorted trigonal-bipyramidal geometry. The solid-state structure of 2 contains two dinuclear [Cu2(ccdp)]- units having one CuII center in a distorted square-pyramidal geometry and another CuII center in a distorted trigonal-bipyramidal geometry within each dinuclear unit. In the powder state, the high-field EPR spectrum of complex 1 indicates that two CuII ions are not spin-coupled, whereas that of complex 2 exhibits at least one noninteracting CuII center coordinated to a nitrogen atom of the ligand. Both complexes are investigated for their binding affinity with the protein bovine serum albumin (BSA) in an aqueous medium at pH ～7.2 using fluorescence spectroscopy. Synchronous fluorescence spectra clearly reveal that complexes 1 and 2 bind to the active sites in the protein, indicating that the effect is more pronounced toward tyrosine than tryptophan. Density functional theory calculations have been carried to find the Fukui functions at the metal sites in complexes 1 and 2 to predict the possible metal centers involved in the binding process with BSA protein.
Homodinuclear copper(II) and zinc(II) complexes of a carboxylate-rich ligand as synthetic mimics of phosphoester hydrolase in aqueous solutions
Foley, William,Arman, Hadi,Musie, Ghezai T.
, (2021/09/14)
The synthesis, characterization and catalytic activities of two homodinuclear Cu(II) and Zn(II) complexes of a carboxylate-rich ligand, N,N′-Bis[2-carboxybenzomethyl]-N,N′ -Bis[carboxymethyl]-1,3-diaminopropan-2-ol (H5ccdp) ligand towards the h
