0000000000248618
AUTHOR
M. Luisa Calatayud
Ligand Effects on the Structure and Magnetic Properties of Alternating Copper(II) Chains with 2,2′-Bipyrimidine- and Polymethyl-Substituted Pyrazolates as Bridging Ligands
A novel series of heteroleptic copper(II) compounds of formulas {[Cu2(μ-H2O)(μ-pz)2(μ-bpm)(ClO4)(H2O)]ClO4·2H2O}n (1), {[Cu2(μ-H2O)(μ-3-Mepz)2(μ-bpm)](ClO4)2·2H2O}n (2), and {[Cu2(μ-OH)(μ-3,5-Me2pz)(μ-bpm)(H-3,5-Me2pz)2](ClO4)2}n (3) [bpm = 2,2'-bipyrimidine, Hpz = pyrazole, H-3-Mepz = 3-methylpyrazole, and H-3,5-Me2pz = 3,5-dimethylpyrazole] have been synthesized and structurally characterized by X-ray diffraction methods. The crystal structures of 1 and 2 consist of copper(II) chains with regular alternating bpm and bis(pyrazolate)(aqua) bridges, whereas that of 3 is made up of copper(II) chains with regular alternating bpm and (pyrazolate)(hydroxo) bridges. The copper centers are six- (1…
Magneto-structural correlations in asymmetric oxalato-bridged dicopper(II) complexes with polymethyl-substituted pyrazole ligands
Two oxalato-bridged dinuclear copper(II) complexes, [{Cu(Hdmpz)3}2(μ-ox)](ClO4)2·2H2O (1) and [{Cu(Htmpz)3}2(μ-ox)](ClO4)2·2H2O (2) (Hdmpz = 3,5-dimethyl-1H-pyrazole and Htmpz = 3,4,5-trimethyl-1H-pyrazole), have been synthesized and structurally and magnetically characterized. The crystal structures of 1 and 2 consist of asymmetric bis-bidentate μ-oxalatodicopper(II) complex cations with two short [Cu–O = 1.976(2) (1) and 1.973(2) Å (2)] and two long copper–oxygen bonds [Cu–O = 2.122(2) (1) and 2.110(2) Å (2)]. The environment at each CuII ion in 1 and 2 is closer to the trigonal bipyramidal geometry than to the square pyramidal [τ = 0.633 (1) and 0.711 (2)]. The magnetic properties of 1 a…
Ferro- and Antiferromagnetic Interactions in Oxalato-Centered Inverse Hexanuclear and Chain Copper(II) Complexes with Pyrazole Derivatives.
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 perchlorat…
Cu(II) and Cu(I) complexes with 1,2-dithiosquarate as a ligand; from molecular compounds to supramolecular network structures
Abstract Four new complexes of copper(II) and/or copper(I) with 1,2-dtsq as a ligand have been synthesized and characterized by single crystal X-ray diffraction methods, [CuII(terpy)(1,2-dtsq)] (1), [CuII(dmen)(1,2-dtsq)]n (2), {[CuII(dmen)2][CuI(1,2-dtsq)]2}n·2nH2O(3) and {[CuII(men)2][CuI (1,2-dtsq)]2}n·nH2O (4) (1,2-dtsq = 1,2-dithiosquarate, dianion of 3,4-dimercapto-1-cyclobutene-1,2-dione; dmen = N,N-dimethylethylenediamine; men = N-methylethylenediamine, terpy = 2,2′:6,2″-terpyridine). Compound 1 consists of neutral [CuII(terpy)(1,2-dtsq)] mononuclear units which are held together by O⋯H–C and van der Waals interactions. Compound 2 is built of neutral [CuII(dmen)(1,2-dtsq)] entities …
Synthesis, spectroscopic and structural characterization of [Cu(phen)(C5O5)(H2O)]·H2O, [Ni(terpy)(C5O5)(H2O)]·H2O and [Ni(terpy)2](NO3)2·0.5H2O
Abstract The new mononuclear complexes [Cu(phen)(C5O5)(H2O)]·H2O (1), [Ni(terpy)(C5O5)(H2O)]·H2O (2) and [Ni(terpy)2](NO3)2·0.5H2O (3) [phen=1,10-phenanthroline, C 5 O 5 2 − =dianion of the 4,5-dihydroxycyclopent-4-ene-1,2,3-trione and terpy=2,2′:6′,2″-terpyridine] have been synthesized and characterized by single-crystal X-ray diffraction. The copper atom of 1 has a distorted square pyramidal environment with two phen-nitrogen and two croconate-oxygen atoms building the equatorial plane and a water molecule in the apical position. The nickel atom of 2 exhibits a distorted NiN3O3 octahedral coordination, which may be described either as tetragonally compressed or as skewed trapezoidal bipyr…
Self-assembly, binding ability and magnetic properties of dicopper(ii) pyrazolenophanes
A novel series of dinuclear copper(II) pyrazolenophanes of the formula [Cu2(μ-4-Mepz)2(μ-ClO4)(ClO4)(bpm)2] (1), [Cu2(μ-pz)2(μ-H2O)(ClO4)(4,7-Me2phen)2]ClO4·H2O·CH3CN (2), [Cu2(μ-pz)2(μ-H2O)(ClO4)3/2(H2O)1/2(phen)2]2[Cu2(μ-pz)2(μ-ClO4)(ClO4)2(phen)2]·8H2O (3), and [Cu2(μ-pz)2(CH3CN)2(3,4,7,8-Me4phen)2](ClO4)2 (4) (Hpz = pyrazole, H-4-Mepz = 4-methylpyrazole, bpm = 2,2'-bipyrimidine, phen = 1,10-phenanthroline, 4,7-Me2phen = 4,7-dimethyl-1,10-phenanthroline, and 3,4,7,8-Me4phen = 3,4,7,8-tetramethyl-1,10-phenanthroline) have been synthesized and magneto-structurally investigated. The crystal structures of 1–4 contain bis(pyrazolate)(perchlorate)- (1 and 3), bis(pyrazolate)(aqua)- (2 and 3), …
Dicopper(II) pyrazolenophanes: Ligand effects on their structures and magnetic properties
Abstract The use of simple pyrazolate anions and related polychelating acyclic or macrocyclic pyrazolate derivatives as bridging ligands, and occasionally additional blocking ligands, has led to the stereospecific Cu II -mediated self-assembly of both homo- and heteroleptic di-μ-pyrazolatodicopper(II) complexes of the metallacyclophane type, so-called dicopper(II) pyrazolenophanes. Besides their unique molecular conformation features and binding abilities toward both neutral molecules and charged anionic species, which have illustrated the putative role of weak intramolecular π–π stacking, hydrogen bonding, and coordinative interactions in the self-assembling process, dicopper(II) pyrazolen…
CCDC 878930: Experimental Crystal Structure Determination
Related Article: M. Luisa Calatayud, Marta Orts-Arroyo, Miguel Julve, Francesc Lloret, Nadia Marino, Giovanni De Munno, Rafael Ruiz-García, Isabel Castro|2018|J.Coord.Chem.|71|657|doi:10.1080/00958972.2017.1421950
CCDC 987581: Experimental Crystal Structure Determination
Related Article: Isabel Castro, M. Luisa Calatayud, Wdeson P. Barros, José Carranza, Miguel Julve, Francesc Lloret, Nadia Marino, and Giovanni De Munno|2014|Inorg.Chem.|53|5759|doi:10.1021/ic500544n
CCDC 1047962: Experimental Crystal Structure Determination
Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A
CCDC 987580: Experimental Crystal Structure Determination
Related Article: Isabel Castro, M. Luisa Calatayud, Wdeson P. Barros, José Carranza, Miguel Julve, Francesc Lloret, Nadia Marino, and Giovanni De Munno|2014|Inorg.Chem.|53|5759|doi:10.1021/ic500544n
CCDC 1047964: Experimental Crystal Structure Determination
Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A
CCDC 1047963: Experimental Crystal Structure Determination
Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A
CCDC 987579: Experimental Crystal Structure Determination
Related Article: Isabel Castro, M. Luisa Calatayud, Wdeson P. Barros, José Carranza, Miguel Julve, Francesc Lloret, Nadia Marino, and Giovanni De Munno|2014|Inorg.Chem.|53|5759|doi:10.1021/ic500544n
CCDC 2076621: Experimental Crystal Structure Determination
Related Article: Isabel Castro, M. Luisa Calatayud, Marta Orts-Arroyo, Nicolás Moliner, Nadia Marino, Francesc Lloret, Rafael Ruiz-García, Giovanni De Munno, Miguel Julve|2021|Molecules|26|2792|doi:10.3390/molecules26092792
CCDC 1047965: Experimental Crystal Structure Determination
Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A
CCDC 1577623: Experimental Crystal Structure Determination
Related Article: M. Luisa Calatayud, Marta Orts-Arroyo, Miguel Julve, Francesc Lloret, Nadia Marino, Giovanni De Munno, Rafael Ruiz-García, Isabel Castro|2018|J.Coord.Chem.|71|657|doi:10.1080/00958972.2017.1421950
CCDC 2076622: Experimental Crystal Structure Determination
Related Article: Isabel Castro, M. Luisa Calatayud, Marta Orts-Arroyo, Nicolás Moliner, Nadia Marino, Francesc Lloret, Rafael Ruiz-García, Giovanni De Munno, Miguel Julve|2021|Molecules|26|2792|doi:10.3390/molecules26092792