Solid-State Lattice Effects on High-Spin Mn(Ⅲ) Complexes with Hexadentate Schiff-Base Ligand

2021 ◽  
Author(s):  
Yu-Ting Wang ◽  
Peng-Yu Xu ◽  
Zong-Mei Yu ◽  
Zi-Kun Wang ◽  
Hua-Yu Wu ◽  
...  
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
High Spin ◽  
Schiff Base Ligand ◽  
Lattice Effects

A Zn(II) luminescent complex with a Schiff base ligand: solution, computational and solid state studies

2018 ◽  
Vol 71 (6) ◽  
pp. 874-889 ◽  
Author(s):  
Sebastián Martínez ◽  
Fernando Igoa ◽  
Ignacio Carrera ◽  
Gustavo Seoane ◽  
Nicolás Veiga ◽  
...  
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Schiff Base Ligand

Synthesis, characterization and solid state conductivity of nano-size ionic Schiff base polymers of Cu2+, Zn2+ and VO2+ containing viologen moieties

2019 ◽  
Vol 43 (42) ◽  
pp. 16468-16477
Author(s):  
Zohreh S. Ghavami ◽  
Gholamhossein Grivani
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Organic Semiconductors ◽  
Schiff Base Ligand ◽  
Conductivity Measurements ◽  
Schiff Base Polymers ◽  
Nano Size

The new nano size ionic metallo-Schiff base polymers (IMSPs) were synthesized by reaction of Schiff base ligand of L and VO (acac)2, ZnCl2 and CuCl2. The solid state conductivity measurements candidate them as new metallo-organic semiconductors.

Steric Trapping of the High Spin State in FeIII Quinolylsalicylaldimine Complexes

2014 ◽  
Vol 67 (11) ◽  
pp. 1574 ◽  
Author(s):  
Darunee Sertphon ◽  
David J. Harding ◽  
Phimphaka Harding ◽  
Keith S. Murray ◽  
Boujemaa Moubaraki ◽  
...  
Keyword(s):  
Schiff Base ◽  
Electronic Properties ◽  
High Spin ◽  
Spin State ◽  
Schiff Base Ligand ◽  
Room Temperature ◽  
Spin Crossover ◽  
High Spin State ◽  
Electrochemical Studies ◽  
Magnetic Studies

A new sterically bulky Schiff base ligand, N-(8-quinolyl)-5-tert-butylsalicylaldimine (Hqsal-5-tBu) has been prepared and a series of FeIII complexes, [Fe(qsal-5-tBu)2]Y (Y = Cl 1, ClO4 2, NO3 3, BF4 4) utilising this ligand are reported and fully characterised. UV-vis spectroscopic and electrochemical studies indicate that 1–4 are high spin (HS) in solution at room temperature and further suggest that the tBu group only slightly alters the electronic properties of 1–4 compared with related [Fe(qsal-5-X)2]+ systems. The structures of [Fe(qsal-5-tBu)2]Cl·4MeOH·H2O 1, [Fe(qsal-5-tBu)2]ClO4·MeOH 2, and [Fe(qsal-5-tBu)2]NO3 3 determined at 100 K reveal HS FeIII centres in all cases. Four-fold parallel aryl embraces and π–π interactions serve to link the cations forming 2D sheets mirroring the motifs found in other [Fe(qsal-5-X)2]+ complexes. Despite this the tBu group causes strong distortions at the Fe centre which as magnetic studies reveal prevent spin crossover trapping 1–4 in the HS state.

Impact of the Schiff base ligand substituents on the solid state and solution properties of eleven iron(iii) complexes

2019 ◽  
Vol 43 (35) ◽  
pp. 13916-13928 ◽  
Author(s):  
Lukáš Pogány ◽  
Barbora Brachňaková ◽  
Petra Masárová ◽  
Ján Moncol ◽  
Ján Pavlik ◽  
...  
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Schiff Base Ligand ◽  
Molecular Design ◽  
Redox Properties ◽  
Schiff Base Complexes ◽  
Solution Properties

A series of novel iron(iii)-Schiff base complexes have been prepared and structurally characterised. Their stereochemical, magnetic and redox properties were correlated with the molecular design of the corresponding N3O2-pentadentate Schiff base ligand.

{6,6′-Dimethoxy-2,2′-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolato}nickel(II) chloroform solvate

2006 ◽  
Vol 62 (5) ◽  
pp. m948-m949 ◽  
Author(s):  
Yu-Ye Yu
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Schiff Base Ligand ◽  
Solid State Reaction ◽  
Title Compound ◽  
Coordination Geometry ◽  
Square Planar ◽  
Salen Ligand

The title compound, [Ni(C18H18N2O4)]·CHCl3, has been synthesized by the solid-state reaction of Ni(OAc)2·4H2O and the Schiff base ligand N,N′-ethylene-bis(3-methoxysalicylaldehyde) [abbreviated as H2(3-MeO-salen)]. The Ni atom adopts a slightly deformed square-planar coordination geometry in which the 3-MeO-salen ligand acts as a cis-N2O2 donor.

scholarly journals Catecholase-Like Activity and Theoretical Study in Solid State of a New Ru(III)-Schiff Base Complex

2021 ◽  
Vol 68 (1) ◽  
pp. 212-221
Author(s):  
Niladri Biswas ◽  
Sandeepta Saha ◽  
Ennio Zangrando ◽  
Antonio Frontera ◽  
Chirantan Roy Choudhury
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Schiff Base Ligand ◽  
Metal Ion ◽  
Theoretical Study ◽  
Schiff Base Complex ◽  
Aerobic Condition ◽  
Halogen Bonding ◽  
Molecular Formula ◽  
Charge Balance

A new ruthenium(III) complex of molecular formula [Ru(PPh3)Cl2(L)] (1) has been synthesized using the Schiff base ligand obtained from 5-chlorosalicylaldehyde and N,N-dimethylethylenediamine and characterized by FT-IR, UV-Vis, cyclic voltammetry and single crystal X-ray structural analysis. The metal ion exhibits a slightly distorted octahedral environment where the chelating Schiff base ligand contributes with its NNO donor set. The coordination geometry around the Ru(III) ion is completed by a PPh3 ligand and two chloride anions, and the charge balance is assured by the phenoxo oxygen of the Schiff base. With the aim to analyse the energy related to the halogen bonding interactions in solid state, a theoretical study has been performed on complex 1, by using the MEP and NCl plot computational tools. Furthermore, complex 1 shows catecholase-like activity in conversion of the model substrate 3,5-di-tert-butylcatechol (3,5-DTBC) to the corresponding 3,5-di-tert-butylquinone (3,5-DTBQ) under aerobic condition. The parameters regarding the enzymatic kinetics have been evaluated from the Lineweaver-Burk plot using the Michaelis-Menten approach of enzyme catalysis. A significant high T.O.N value (2.346 × 103 h–1) indicates that complex 1 has a very good catalytic efficiency towards 3,5-DTBC.

Preparation and Characterization of Copper Oxide Nanoparticles Through Solid State Thermal Decomposition of an Aqua Nitrato Copper(II) Complex with a Tridentate Schiff-base Ligand as a New Precursor

2018 ◽  
Vol 9 (1) ◽  
pp. 92-100 ◽  
Author(s):  
Niaz Monadi ◽  
Samira Saeednia ◽  
Parvaneh Iranmanesh ◽  
Mehdi H. Ardakani ◽  
Samira Sinaei
Keyword(s):  
Thermal Decomposition ◽  
Schiff Base ◽  
Solid State ◽  
Copper Oxide ◽  
Schiff Base Ligand ◽  
Copper Oxide Nanoparticles ◽  
Cuo Nanoparticles ◽  
Oxide Nanoparticles ◽  
Tridentate Schiff Base

Introduction: In this study the synthesis and characterization of copper oxide nanoparticles via solid state thermal decomposition of a recently synthesized aqua nitrato copper(II) complex with a tridentate Schiff-base ligand (1) as a new precursor are reported. Materials & Methods: The copper complexes were obtained by sonochemical and solvothermal process and characterized by Scanning Electron Microscopy (SEM), X-ray powder Diffraction (XRD) and FT-IR spectroscopy. The thermal stability of compound (1) was studied by Thermogravimetric Analysis (TGA). The amount of initial reagents and the role of reaction time on size and morphology of nanostructure compound (1) were studied. CuO nanoparticles were simply synthesized at 500 oC under air atmosphere. Results & Conclusion: The diameter of CuO nanoparticles was estimated to be about 200 and 30 nm from copper complex precursor obtained by sonochemical and solvothermal methods respectively.

On the importance of RH3C•••N tetrel bonding interactions in the solid state of a dinuclear zinc complex with a tetradentate Schiff base ligand

CrystEngComm ◽  
2021 ◽  
Author(s):  
IPSITA MONDAL ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Schiff Base Ligand ◽  
Zinc Complex ◽  
X Ray ◽  
Tetradentate Schiff Base

The synthesis and X-ray characterization of a new dinuclear Zn complex using a tetradentate N2O2 donor Schiff base and azide as anionic co-ligand of formula [(DMSO)2ZnL(µ1,1-N3)Zn(N3)2] (1) is reported herein....

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