scholarly journals Spectroscopic, Thermal and Biological Studies of the Coordination Compounds of Sulfasalazine Drug: Mn(II), Hg(II), Cr(III), ZrO(II), VO(II) and Y(III) Transition Metal Complexes

2008 ◽  
Vol 56 (11) ◽  
pp. 1585-1591 ◽  
Author(s):  
Mohamed Gamal Abd El-Wahed ◽  
Moamen Salah Refat ◽  
Samy Mohamed El-Megharbel
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Coordination Compounds ◽  
Biological Studies

First row transition metal complexes of thienyl substituted terpyridine: Structural, photophysical and biological studies

Polyhedron ◽  
2012 ◽  
Vol 33 (1) ◽  
pp. 396-403 ◽  
Author(s):  
Zohreh Naseri ◽  
Ali Nemati Kharat ◽  
Asma Banavand ◽  
Abolghasem Bakhoda ◽  
Sahar Foroutannejad
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Biological Studies

scholarly journals A New Twist on an ‘Old’ Ligand: A [Mn16] Double Square Wheel and a [Mn10] Contorted Wheel

2020 ◽  
Author(s):  
Euan Brechin ◽  
Constantinos J. Milios ◽  
Thomais Tziotzi ◽  
Marco Coletta ◽  
Mark Gray ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Direct Current ◽  
Coordination Compounds ◽  
Exchange Interactions ◽  
Ligand Design ◽  
Jahn Teller

Ligand design remains key to the synthesis of coordination compounds possessing specific topologies, nuclearities and symmetries that direct targeted physical properties. N,O-chelates based on ethanolamine have been particularly prolific in constructing a variety of paramagnetic 3d transition metal complexes with fascinating magnetic properties. Here, we show that combining three ethanolamine moieties within the same organic framework in the form of the ligand 1,3,5-tri(2-hydroxyethyl)-1,3,5-triazacyclohexane (LH3) leads to the formation of two highly unusual Mn wheels. Reaction of Mn(NO3)2·6H2O with LH3 in basic methanolic solutions leads to the formation of [MnIII 12MnII 4(µ3-O)6(µ-OH)4(µ3-OMe)2(µOMe)2(L)4(LH)2(H2O)10](NO3)6(OH)2 (1) and [MnIII 10(µ3-O)4(µ-OH)4(µ-OMe)4(L)4(H2O)4](NO3)2 (2); the only difference in the synthesis being the ratio of metal:ligand employed. The structure of the former describes two offset [MnIII 6MnII 2] square wheels, linked through a common centre, and the latter a single [MnIII 10] wheel twisted at its centre, such that the top half is orientated perpendicular to the bottom half. In both cases the L 3- /LH2- ligands dictate the orientation of the Jahn-Teller axes of the MnIII ions which lie perpendicular to the triazacyclohexane plane. Direct current magnetic susceptibility and magnetisation data reveal the presence of competing exchange interactions in 1 and strong antiferromagnetic interactions in 2. Given the simplicity of the reactions employed and the paucity of previous work, the formation of these two compounds suggests that LH3 will prove to be a profitable ligand for the synthesis of a multitude of novel 3d transition metal complexes

Exploring solvent dependent catecholase activity in transition metal complexes: an experimental and theoretical approach

2020 ◽  
Vol 44 (4) ◽  
pp. 1371-1388
Author(s):  
Mantasha I. ◽  
M. Shahid ◽  
Manjeet Kumar ◽  
Azaj Ansari ◽  
Muhammad Nadeem Akhtar ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Theoretical Approach ◽  
Coordination Compounds ◽  
X Ray ◽  
Catecholase Activity

Four coordination compounds are designed with pyridinemethanol ligands, characterized with spectral, magnetic and X-ray analyses, and assessed for catecholase activity in various solvents.

scholarly journals Rational design of potential spin qubits manipulated by the valence tautomerism mechanism: quantum-chemical modeling of the trinuclear transition metal complexes with bischelate linkers

2017 ◽  
Vol 41 (14) ◽  
pp. 6497-6503 ◽  
Author(s):  
A. A. Starikova ◽  
V. I. Minkin
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Quantum Chemical ◽  
Coordination Compounds ◽  
Rational Design ◽  
Quantum Computers ◽  
Spin Qubits ◽  
Chemical Modeling ◽  
Valence Tautomerism

A new series of transition metal coordination compounds capable of manifesting the properties of logical elements of quantum computers has been computationally designed using the DFT UB3LYP*/6-311++G(d,p) calculations.

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