Synthesis, crystal structure of a new tetranuclear Ni 2 II Cu 2 II complex containing a macrocyclic ligand

Chen, Jing; Qiu, Sun Ya

doi:10.1007/s11243-007-0210-x

Cited by 3 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The closest examples are two [Ni À Cu À Cu À Ni] linear complexes consisting of two oxamido-based NiCu pairs linked by N 3 À or NCS À ligands. [34,35] (17) [a] The suffix # denotes atoms generated by symmetry operation (1Àx, Ày, 2Àz). ), respectively.…”

Section: Introductionmentioning

confidence: 99%

Designed Topology and Site‐Selective Metal Composition in Tetranuclear [MM′⋅⋅⋅M′M] Linear Complexes

Barrios

Aguilà

Roubeau

et al. 2009

Chemistry A European J

View full text Add to dashboard Cite

The ligand 1,3-bis[3-oxo-3-(2-hydroxyphenyl)propionyl]benzene (H(4)L), designed to align transition metals into tetranuclear linear molecules, reacts with M(II) salts (M=Ni, Co, Cu) to yield complexes with the expected [MMMM] topology. The novel complexes [Co(4)L(2)(py)(6)] (2; py=pyridine) and [Na(py)(2)][Cu(4)L(2)(py)(4)](ClO(4)) (3) have been crystallographically characterised. The metal sites in complexes 2 and 3, together with previously characterised [Ni(4)L(2)(py)(6)] (1), favour different coordination geometries. These have been exploited for the deliberate synthesis of the heterometallic complex [Cu(2)Ni(2)L(2)(py)(6)] (4). Complexes 1, 2, 3 and 4 exhibit antiferromagnetic interactions between pairs of metals within each cluster, leading to S=0 spin ground states, except for the latter cluster, which features two quasi-independent S=1/2 moieties within the molecule. Complex 4 gathers the structural and physical conditions, thus allowing it to be considered as prototype of a two-qbit quantum gate.

show abstract

Section: Introductionmentioning

confidence: 99%

Designed Topology and Site‐Selective Metal Composition in Tetranuclear [MM′⋅⋅⋅M′M] Linear Complexes

Barrios

Aguilà

Roubeau

et al. 2009

Chemistry A European J

View full text Add to dashboard Cite

show abstract

Synthesis, Structures, and Properties of New Discrete Hetero‐tetranuclear Metallocycle Complexes Based on Macrocyclic Oxamide Metalloligands

Shi¹,

Li²,

Ding³

et al. 2012

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

Two new discrete hetero‐tetranuclear metallocycle complexes based on metalloligands, {[Zn2(NiL1)2(H2O)6]·4H2O}n (1) and {[Ca2(NiL2)2(CH3OH)0.5(H2O)7]·CH3OH·2H2O}n (2) were synthesized under self‐assembly conditions and structurally determined. X‐ray diffraction analyses revealed that the two compounds involve the discrete metallocyclic units, which serve as building blocks to further expand to three‐dimensional supramolecular frameworks through second interactions such as hydrogen bonds and π···π stacking interactions. The central ZnII and CaII ions of the compounds 1 and 2 are bridged by macrocyclic oxamido metalloligands fusing the metallocycle with “head‐to‐tail” arrangement. The metallocycles have Zn···Zn distances of 9.48 Å in 1 and Ca···Ca distances of 9.90 Å in 2. Further, compounds 1 and 2 were investigated by thermogravimetric analysis.

show abstract

Synthesis, Characterization and DFT Studies of Some Co(II) and Cu(II) Complexes of 12-Membered Tetradentate [N4] Macrocyclic Schiff Base Derived from 9,10-Phenanthrenequinone

et al. 2019

View full text Add to dashboard Cite

The structures of some coordination compounds of cobalt(II) and copper(II) with macrocyclic Schiff bases obtained by the reaction of 9,10-phenanthrenequinone with diamines synthesized in 1:1 molar ratio(s) have been elucidated by various physico-chemical methods viz. elemental analysis, IR, UV-visible, mass, ESR. The surface morphology was determined by SEM analysis. Infrared spectra suggested that ligand was coordinated to the metal ion in a tetradentate manner through azomethine nitrogen atom by the change in its stretching frequency. ESR spectra of copper(II) complexes indicates the presence of unpaired electron in the dx2–y2 by calculating the g values. The optimized geometries which were calculated using the DFT/B3LYP method were compared with the molecular geometries obtained experimentally.

show abstract

Synthesis, crystal structure of a new tetranuclear Ni 2 II Cu 2 II complex containing a macrocyclic ligand

Cited by 3 publications

References 18 publications

Designed Topology and Site‐Selective Metal Composition in Tetranuclear [MM′⋅⋅⋅M′M] Linear Complexes

Designed Topology and Site‐Selective Metal Composition in Tetranuclear [MM′⋅⋅⋅M′M] Linear Complexes

Synthesis, Structures, and Properties of New Discrete Hetero‐tetranuclear Metallocycle Complexes Based on Macrocyclic Oxamide Metalloligands

Synthesis, Characterization and DFT Studies of Some Co(II) and Cu(II) Complexes of 12-Membered Tetradentate [N4] Macrocyclic Schiff Base Derived from 9,10-Phenanthrenequinone

Contact Info

Product

Resources

About