Modular approach towards functional multimetallic coordination clusters

Kobylarczyk, Jedrzej; Kuzniak-Glanowska, Emilia; Liberka, Michał; Chorąży, Szymon; Sieklucka, Barbara; Podgajny, Robert

doi:10.1016/j.ccr.2020.213394

Cited by 48 publications

(24 citation statements)

References 288 publications

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“…Among known lanthanide (Ln) complexes, 10 a family based on β-diketonate ligands attracted our attention as a result of their straightforward synthesis, 11 versatility in nuclearity 12 and composition, 13 and short inter-Ln distances. 14 The simple case of acetylacetonate ligands forming nonanuclear complexes 12 particularly piqued our interest with the close proximity of up to nine Ln atoms in a very small volume and intermetallic distances shorter than 5 Å. Noteworthy, a controlled doping of such complexes might allow the formation of entities containing up to eight sensitizing ions for one emitting UC center, a situation considered to be optimum for maximizing energy transfer UC.…”

Section: 5-7mentioning

confidence: 99%

Upconversion in molecular hetero-nonanuclear lanthanide complexes in solution

et al. 2021

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Section: 5-7mentioning

confidence: 99%

Upconversion in molecular hetero-nonanuclear lanthanide complexes in solution

et al. 2021

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“…The structural directing role of the bridging ligand as a non-metallic inverse coordination center (centroligand) is the cornerstone of the ICC viewpoint. Moreover, it is ultimately responsible for the magnetic properties of a unique class of IPCs and ICPs with paramagnetic 3d–5d metal ions that behave as molecular nanomagnets and molecule-based magnets [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. They include discrete metal-fluoride rings [ 25 , 26 , 27 , 28 ], metal-oxo clusters [ 29 , 30 , 31 ], and metal-cyanide polyhedra [ 32 ], as well as a variety of chains, layers, and different networks with cyanide [ 33 , 34 ] and polycyanocarbon anion radicals [ 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Ferro- and Antiferromagnetic Interactions in Oxalato-Centered Inverse Hexanuclear and Chain Copper(II) Complexes with Pyrazole Derivatives

et al. 2021

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Two novel copper(II) complexes of formulas {[Cu(4-Hmpz)4][Cu(4-Hmpz)2(µ3-ox-κ2O1,O2:κO2′:κO1′)(ClO4)2]}n (1) and {[Cu(3,4,5-Htmpz)4]2[Cu(3,4,5-Htmpz)2(µ3-ox-κ2O1,O2:κO2′:κO1′)(H2O)(ClO4)]2[Cu2(3,4,5-Htmpz)4(µ-ox-κ2O1,O2:κ2O2′,O1′)]}(ClO4)4·6H2O (2) have been obtained by using 4-methyl-1H-pyrazole (4-Hmpz) and 3,4,5-trimethyl-1H-pyrazole (3,4,5-Htmpz) as terminal ligands and oxalate (ox) as the polyatomic inverse coordination center. The crystal structure of 1 consists of perchlorate counteranions and cationic copper(II) chains with alternating bis(pyrazole)(µ3-κ2O1,O2:κO2′:κO1′-oxalato)copper(II) and tetrakis(pyrazole)copper(II) fragments. The crystal structure of 2 is made up of perchlorate counteranions and cationic centrosymmetric hexanuclear complexes where an inner tetrakis(pyrazole)(µ-κ2O1,O2:κ2O2′,O1′-oxalato)dicopper(II) entity and two outer mononuclear tetrakis(pyrazole)copper(II) units are linked through two mononuclear aquabis(pyrazole)(µ3-κ2O1,O2:κO2′:κO1′-oxalato)copper(II) units. The magnetic properties of 1 and 2 were investigated in the temperature range 2.0–300 K. Very weak intrachain antiferromagnetic interactions between the copper(II) ions through the µ3-ox-κ2O1,O2:κO2′:κO1′ center occur in 1 [J = −0.42(1) cm−1, the spin Hamiltonian being defined as H = −J∑S1,i · S2,i+1], whereas very weak intramolecular ferromagnetic [J = +0.28(2) cm−1] and strong antiferromagnetic [J’ = −348(2) cm−1] couplings coexist in 2 which are mediated by the µ3-ox-κ2O1,O2:κO2′:κO1′ and µ-ox-κ2O1,O2:κ2O2′,O1′ centers, respectively. The variation in the nature and magnitude of the magnetic coupling for this pair of oxalato-centered inverse copper(II) complexes is discussed in the light of their different structural features, and a comparison with related oxalato-centered inverse copper(II)-pyrazole systems from the literature is carried out.

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“…The metallosupramolecular chemistry term was coined by Constable in 1994 to describe an emerging research area in the field of supramolecular chemistry [1,2], where the advantage of coordination chemistry is taken to control the metal-directed assembly of supramolecular systems [3][4][5][6][7][8][9][10]. Metallosupramolecular chemistry provides convenient tools for the current evolution from molecular magnetism [11][12][13][14][15][16][17][18] toward single-molecule spintronics [19][20][21][22][23][24][25][26][27][28] and quantum computing [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Introduction and Background: Molecular Magnetism Meets Metalmentioning

confidence: 99%

When Molecular Magnetism Meets Supramolecular Chemistry: Multifunctional and Multiresponsive Dicopper(II) Metallacyclophanes as Proof-of-Concept for Single-Molecule Spintronics and Quantum Computing Technologies?

et al. 2020

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Molecular magnetism has made a long journey, from the fundamental studies on through-ligand electron exchange magnetic interactions in dinuclear metal complexes with extended organic bridges to the more recent exploration of their electron spin transport and quantum coherence properties. Such a field has witnessed a renaissance of dinuclear metallacyclic systems as new experimental and theoretical models for single-molecule spintronics and quantum computing, due to the intercrossing between molecular magnetism and metallosupramolecular chemistry. The present review reports a state-of-the-art overview as well as future perspectives on the use of oxamato-based dicopper(II) metallacyclophanes as promising candidates to make multifunctional and multiresponsive, single-molecule magnetic (nano)devices for the physical implementation of quantum information processing (QIP). They incorporate molecular magnetic couplers, transformers, and wires, controlling and facilitating the spin communication, as well as molecular magnetic rectifiers, transistors, and switches, exhibiting a bistable (ON/OFF) spin behavior under external stimuli (chemical, electronic, or photonic). Special focus is placed on the extensive research work done by Professor Francesc Lloret, an outstanding chemist, excellent teacher, best friend, and colleague, in recognition of his invaluable contributions to molecular magnetism on the occasion of his 65th birthday.

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Modular approach towards functional multimetallic coordination clusters

Cited by 48 publications

References 288 publications

Upconversion in molecular hetero-nonanuclear lanthanide complexes in solution

Upconversion in molecular hetero-nonanuclear lanthanide complexes in solution

Ferro- and Antiferromagnetic Interactions in Oxalato-Centered Inverse Hexanuclear and Chain Copper(II) Complexes with Pyrazole Derivatives

When Molecular Magnetism Meets Supramolecular Chemistry: Multifunctional and Multiresponsive Dicopper(II) Metallacyclophanes as Proof-of-Concept for Single-Molecule Spintronics and Quantum Computing Technologies?

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