342037-22-3

Upstream product

• 1692-15-5 4-pyridylboronic acid 
• 153759-58-1 5-bromo-3-tert-butyl-2-hydroxybenzaldehyde 
• 24623-65-2 3-tert-butyl-2-hydroxybenzaldehyde 

Downstream Products

• 1448984-99-3 C₃₄H₄₅N₃O₄ 
• 1448984-97-1 C₂₂H₃₁N₃O 
• 1448984-96-0 C₂₂H₂₉N₃O*ClH 
• 351498-14-1 3,3'-[1,2-phenylenediylbis(nitromethylidine)]bis[3-tert-butyl-2-hydroxy-5-(4-pyridinyl)-benzaldehyde] 

Relevant academic research and scientific papers

Investigation on structurally different Cu(II) and Ni(II) complexes constructed from a novel pyridine-terminal salamo-like ligand

A novel structurally characterized salamo-like ligand H2L contained double terminal pyridine groups was designed and synthesized. The single crystals of the Cu(II) and Ni(II) complexes are grown up through coordination of H2L with Cu(II) and Ni(II) ions, respectively, determined as [Cu(LH)]NO3?CH3CH2OH and [{Ni(L)}2]n·n3C5H5N·nCH3COCH3. The Cu(II) atom is located at the N2O2 cavity of the deprotonation ligand (L)2? moiety, but the N atoms of the terminal pyridine groups of the ligand (L)2? moiety is not involved in the coordination, and forms a four-coordinated twisted quadrilateral geometry. While the Ni(II) atom (Ni1 or Ni2) is sited in the N2O2 cavity of the deprotonation ligand (L)2? moiety and forms a plane, the terminal pyridine N atoms from the two adjacent [Ni(L)] moieties also coordinated with the Ni(II) atom in the axial positions to form a slightly distorted octahedral geometry with six-coordination. In the formation of MOFs, the benzene and pyridine rings of the ligand (L)2? moiety are rotated and create an angle, result to form a chiral MOFs using an achiral ligand (L)2? moiety. View of MOFs in the C direction, the Ni(II) complex has four different size of apertures in its structure, and presences a large amount of protonic hydrogen. Spectroscopic analyses of H2L and its Cu(II) and Ni(II) complexes are performed using IR, UV–Vis and fluorescence spectroscopy. Compared with the Cu(II) complex, the Ni(II) complex has better thermal stability. The magnetic analyses were also carried out. Hirshfeld surfaces analyses are carried out to analyze various short-range interactions in H2L and its Cu(II) complex.

Constructing a triangular metallacycle with salen-Al and its application to a catalytic cyanosilylation reaction

A triangular metallosalen-based metallacycle was constructed in quantitative yield by the self-assembly of a 180° bis(pyridyl)salen-Al complex and a 60° diplatinum(ii) acceptor in a 1?:?1 stoichiometric ratio. This metallacycle was then successfully used to cyanosilylate a wide range of benzaldehydes with trimethylsilyl cyanide.

Novel structurally characterized Co(II) metal-organic framework and Cd(II) coordination polymer self-assembled from a pyridine-terminal salamo-like ligand bearing various coordination modes

Two novel structurally characterized Co(II) metal-organic framework (Co(II) MOF) and Cd(II) coordination polymer (Cd(II) CP), [{Co(L)}2]n·nCH3COCH3 and [Cd(H2L)(CH3COO)2]n were self-assembled from a newly designed salamo-like ligand H2L bearing double terminal pyridine groups and Co(II) and Cd(II) ions, respectively. In the Co(II) MOF, the Co1 and Co2 ions are six-coordinated octahedron geometries, have similar coordination environments, and are located in the N2O2 cavities of the ligand (L)2? units, forming Co1-L and Co2-L parts, respectively. The terminal pyridine N atoms of the Co1-L (or Co2-L ) part are connected with Co1-L and Co2-L parts respectively, forming a metal-organic framework with double helix structure in thea-direction and regular channels in the c-direction. In the Cd(II) CP, Cd(II) ion is seven-coordinated single cap triangular prism geometry, did not participate in the coordination of the N2O2 cavity, but coordinated with free acetate in the solution. Two bidentate acetate anions chelate to Cd1 ion, and two Cd1 ions are bridged by O atom of one of the acetate anions to form Cd2(OAc)2 unit which was used as the junction point to connect with the terminal pyridine N atoms of H2L. Finally, the coordination polymer with large pore channels was formed. Spectroscopic analyses of H2L and its Co(II) MOF and Cd(II) CP are performed using IR, UV–Vis and fluorescence spectroscopy. TGA analyses show that the Co(II) MOF and Cd(II) CP have good stabilities. Various short-range interactions in the Co(II) MOF and Cd(II) CP are investigated through Hirshfeld surfaces analyses.

Coordination Properties and Fluorescence of a Structurally Novel Zn(II) Pyridine-Terminal Salamo-Type Coordination Polymer

Abstract: A novel two-dimensional Zn(II) coordination polymer [Zn(II) CP],[{Zn(L)Zn(OAc–)(μ-OAc–)}4]n· 2nCH3CH2OH has beenself-assembled from Zn(OAc)2·2H2O.It contains pyridine-terminal salamo-type ligand H2L.Structure of the product has been determined. The Zn(II)CP contains two kinds ofZn(II) ions of different coordination modes. The Zn1 center is characterized byfive-coordinated triangular biconical geometry. TheZn2 center is a six-coordinated octahedralcenter. Using these as junction points and the fully deprotonated ligand(L)2– moieties containing pyridine-terminal as alinker, the 2-D coordination polymer with two kinds of different pores [27.47 ×11.77(23) ?2; 11.97 × 4.51(17)?2] has been obtained. The Zn(II) CP canfluoresce green and be used in fluorescent materials. Short-range interactionson Zn(II) CP surface have been studied by Hirshfeld surface analysis.

A new symmetrical nickel(II) complex with isothiocyanate coordination: synthesis, crystal structure, Hirshfeld surface analysis, DFT calculation and antibacterial activities

The metal salts KSCN, Ni(CH3COO)2·4H2O, and auxiliary ligand pyridine were added respectively to the salamo-like ligand H2L, and it is expected that the Ni(II) complex coordinated by H2L will be obtained. X-ray analysis of the obtained blue bulk single crystal revealed that the ligand H2L did not participate in the coordination, and a mononuclear Ni(II) complex [Ni(Py)4(NCS)2] contained four coordinated pyridine molecules was unexpectedly obtained, and characterized by IR, UV-Visible spectroscopy, and X-ray diffraction. The Ni(II) atom was surrounded by six N atoms, formed a slightly distorted octahedral geometry configuration. Hirshfeld surfaces analyses were performed to determine the various interactions presented in the molecule. DFT calculations were also conducted. In antimicrobial tests, the Ni(II) complex exhibited better inhibition of Escherichia coli relative to Staphylococcus aureus.

A Perspective on Molecular Structure and Experimental-Computational Characterization of a Novel Cd(II) Pyridine-Terminal Salamo-like Coordination Polymer

Abstract: A structurally novel Cd(II) coordination polymer (CP),[Cd(H2L)2(NCS)2]n, has been self-assembled from anewly designed salamo-like ligand H2L bearing doubleterminal pyridine groups, Cd(II) and KSCN. The Cd(II) ion is not located in theN2O2 cavity of the ligandH2L and forms a six-coordinate octahedral geometricalconfiguration. Using Cd(II) ion as a node, the undeprotonated salamo-like ligandH2L units extend in space to give a Cd(II)CP with a2D pore structure. Spectroscopic analysis of the ligandH2L and its Cd(II)CP is performed using IR, UV-Visand fluorescence spectroscopy. Various short-range interactions in the Cd(II)CPare investigated on the basis of Hirshfeld surfaces analysis.

The spectroelectrochemical behaviour of redox-active manganese salen complexes

Salens are well-known for their ability to catalyse electrochemical transformations; however, despite their rich history, the fundamental reduction chemistry of these systems remains relatively unexplored. This work reports the design and synthesis of eight discrete, functionalised Mn(iii) pyridyl salen metal complexes, in which the diamine is varied. The electrochemical properties of the complexes were examined using cyclic voltammetry (CV), spectroelectrochemical (SEC) techniques and Density Functional Theory (DFT) computational modelling to explore the mechanisms that underly Mn salen reduction chemistry. We briefly examine the electrochemistry of these complexes in the presence of CO2. These complexes represent potential ligands for incorporation into both discrete and extended metallosupramolecular assemblies.

Coordination-driven assembly of a supramolecular square and oxidation to a tetra-ligand radical species

The design and synthesis of a supramolecular square was achieved by coordination-driven assembly of redox-active nickel(ii) salen linkers and (ethylenediamine)palladium(ii) nodes. The tetrameric geometry of the supramolecular structure was confirmed via MS, NMR, and electrochemical experiments. While oxidation of the monomeric metalloligand Schiff-base affords a Ni(iii) species, oxidation of the coordination-driven assembly results in ligand radical formation.

Postsynthesis Modification of a Metallosalen-Containing Metal-Organic Framework for Selective Th(IV)/Ln(III) Separation

An uncoordinated salen-containing metal-organic framework (MOF) obtained through postsynthesis removal of Mn(III) ions from a metallosalen-containing MOF material has been used for selective separation of Th(IV) ion from Ln(III) ions in methanol solutions for the first time. This material exhibited an adsorption capacity of 46.345 mg of Th/g. The separation factors (β) of Th(IV)/La(III), Th(IV)/Eu(III), and Th(IV)/Lu(III) were 10.7, 16.4, and 10.3, respectively.

A Mn (III)-Salen catalyst and its preparation method and application

The invention discloses a Mn(III)-Salen catalyst as well as a preparation method and application thereof. The method comprises the following steps: performing reaction on 5-bromo-3-tert-butyl salicylaldehyde and pyridine-4-boric acid as raw materials to generate pyridine salicylaldehyde derivatives; reacting the pyridine salicylaldehyde derivatives with ethylene diamine to synthesize a Salen ligand with a pyridine functional group; finally coordinating divalent manganese salt with the Salen ligand, oxidizing, evaporating an obtained reaction solution to dryness, washing by water and filtering to obtain the Mn(III)-Salen catalyst. According to the method, a reaction system is simple, a reagent is easily available and low in cost, a reaction product post-treatment process is simple, the product purity is high, and the obtained Mn(III)-Salen catalyst is stable to water and air and capable of catalyzing styrene, 4-tert-butyl styrene, indene, alpha-methyl styrene and the like in a manner of relatively high activity and selectivity to synthesize olefin epoxides.