Acetato and formato copper(II) paddle-wheel complexes with nitrogen ligands

Barquı́n, Montserrat; Cocera, Nerea; Garmendia, Marı́a J. González; Larrínaga, Liher; Pinilla, Elena; Torres, M. Rosario

doi:10.1080/00958972.2010.502227

Cited by 21 publications

(9 citation statements)

References 23 publications

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“…The copper atom (Cu1) is slightly out of the square plane of oxygen atoms (0.207 Å), which is consistent with the theory that the longer the Cu ··· Cu distance within the dimer, the higher the Cu out‐of‐plane deviation . In complex 1 , the Cu1 ··· Cu1 i distance is 2.6432(11) Å, which falls into the same order of magnitude as described in the literature (2.612–2.713 Å) . Adjacent complex 1 units are held together by the C–H ··· O hydrogen bonds [C4 ··· O1 iii , 3.362(6) Å, C4–H4 ··· O1 iii , 144.5°, Figure c and Table ], forming a hydrogen bond chain structure including paddle‐wheel units.…”

Section: Resultssupporting

confidence: 86%

Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

Yang

Liu

et al. 2020

Zeitschrift anorg allge chemie

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A copper(II) acetate complex with a urea‐functionalized pyridyl ligand, [CuL(OAc)2]2·2AcOH (1) [L = N‐(3‐chlorophenyl)‐N'‐(3‐pyridyl) urea], was synthesized by the reaction of L with Cu(OAc)2 in methanol. A zigzag‐shaped hydrogen bond chain of L is obtained via urea N–H···Npyridyl interactions, and a two‐dimensional hydrogen bond network structure is further formed through the C–H···O interaction. In the complex 1, a paddle‐wheel structure is generated by Cu···Oacetate interactions and Cu···Npyridyl interactions. Furthermore, hydrogen bonding chain structure is extended through weak C–H···O hydrogen bond interactions. Through ultraviolet‐visible (UV/Vis) spectroscopy, the acetate binding properties of L in solution were also evaluated. Variable temperature magnetic susceptibility measurement indicates that the metal complex 1 displays antiferromagnetic coupling property.

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Section: Resultssupporting

confidence: 86%

Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

Yang

Liu

et al. 2020

Zeitschrift anorg allge chemie

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“…Compound 6 has the apical units (Cu1-O9) at 2.1540(15) Å while compound 7 (Cu1B-N1B) at 2.243(8) Å. The remaining Cu-O distances of the basal plane are in the range 1.959(6) Å and 1.982(7) Å, which are shorter than apical N atoms due to the Jahn-Teller effect [45] but comparable to similar paddle-wheel structures described in the literature (1.945 Å to 2.008 Å) [17,22,[46][47][48][49][50][51].…”

Section: Crystal Structures Of Compounds Andsupporting

confidence: 75%

“…The Cu••Cu intermolecular distances are 2.6057(5) Å and 2.656(1) Å, (6 and 7, respectively). In 6, this Cu••Cu distance is a little bit shorter than other similar structures (2.610 Å-2.713 Å) [17,22,[45][46][47][48][49][50]. It is worthwhile to mention that compound 7 presents the largest angle (O2A-Cu1A-N1A, 99.40°), which corresponds to the carboxylate oxygen closest to the 2-Bzpy ligand.…”

Section: Crystal Structures Of Compounds Andmentioning

confidence: 80%

“…Herein, we focus on this novel compound with an heteroleptic paddle-wheel core [Cu(μ-Pip)(μ-OAc)(MeOH)]2 (1) (OAc=acetate), recently obtained in our research group [18]. Homoleptic core paddlewheel have been vastly used as starting building units for the design of supramolecular [6] or polymeric [22] architectures while there is not any research with those containing a heteroleptic paddlewheel core. Herewith, the reactivity of 1 with pyridine/pyrazole derivative ligands (pyridine (py, 2); 3phenylpyridine (3-Phpy, 3); 4-acetylpyridine (4-Acpy, 4) and 3,5-dimethylpyrazole (3,5-dmpz, 5)) have been studied, resulting in monomeric compounds [Cu(Pip)2(dPy)2(H2O)] (2)(3)(4)(5).…”

Section: Introductionmentioning

confidence: 99%

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Reactivity of homoleptic and heteroleptic core paddle wheel Cu(II) compounds

Sánchez-Férez

Guerrero

Ayllón

et al. 2019

Inorganica Chimica Acta

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The compound [Cu(μ-Pip)(μ-OAc)(MeOH)]2 (1) (Pip=Piperonylate, OAc=acetate, MeOH=methanol) has been obtained in high percentage yield. Its reactivity with pyridine/pyrazole derivative ligands (pyridine (py), 3-phenylpyridine (3-Phpy) and 4-acetylpyridine (4-Acpy)) and 3,5-dimethylpyrazole (3,5-dmpz) leads to four monomeric compounds: [Cu(Pip)2(dPy)2(H2O)] (dPy=py (2), 3-Phpy (3) and 4-Acpy (4a)) and [Cu(Pip)2(3,5-dmpz)2] (5). Furthermore, the reaction of 1 with HPip in MeOH:DMF solvent under reflux conditions yields the homoleptic core paddle-wheel compound [Cu(μ-Pip)2(DMF)]2•2DMF (6). The reaction between 6 and 2-benzylpyridine (2-Bzpy) yields the paddlewheel core compound [Cu(Pip)2(2-Bzpy)]2 (7). All compounds have been fully characterized by analytical and spectroscopic techniques and their X-ray crystal structures have been determined. In this set of compounds, the carboxylate ligand (Pip) displays different coordination modes (monodentate (2-4), bidentate chelate (5) and bridged (1, 6 and 7)). Moreover, their extended structures are discussed: the crystal packing indicates hydrogen bond propagation, which defines 1D (2-5) or 2D (6 and 7) supramolecular networks...

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“…The linear polymeric structure of 4 is similar to that found for {[Cu 2 (-MeCOO) 4 ](-2,5-Me 2 Pyrz)} n [48], demonstrating an interesting trend for dinitrogen C 4 H 4 N 2 hetero-cyclic axial ligands of paddle-wheel acetate and formate complexes. Steric hindrance leads to binuclear complexes for pyridazine which has two N-atoms at 1,2 positions, while pyrimidine with two nitrogen atoms at 1,3 positions afforded a zig-zag polymeric chain [49]. Not surprisingly, our pyrazine (having two nitrogen atoms at opposite (1,4) ring locations) leads to a linear polymer.…”

Section: Discussionmentioning

confidence: 95%

Crystal structure and spectroscopic properties of polymeric adducts of the tetra-μ-haloaspirinate-dicopper(II)

Rustoy

Agotegaray

Piro

et al. 2012

Journal of Coordination Chemistry

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Eight new copper(II) complexes with halo-aspirinate anions have been synthesized: [Cu 2 (Fasp) 4 (MeCN) 2 ] Á 2MeCN (1), [Cu 2 (Clasp) 4 (MeCN) 2 ] Á 2MeCN (2), [Cu 2 (Brasp) 4 (MeCN) 2 ] Á 2MeCN (3), {[Cu 2 (Fasp) 4 (Pyrz)] Á 2MeCN} n (4), {[Cu 2 (Clasp) 4 (Pyrz)] Á 2MeCN} n (5), [Cu 2 (Brasp) 4 (Pyrz)] n (6), [Cu 2 (Clasp) 4 (4,4 0 -Bipy)] n (7), and [Cu 2 (Brasp) 4 (4,4 0 -Bipy)] n (8) (Fasp: fluor-aspirinate; Clasp: chloro-aspirinate; Brasp: bromo-aspirinate; MeCN: acetonitrile;Pyrz: pyrazine; 4,4 0 -Bipy: 4,4 0 -bipyridine). The crystal structure of two 2 and 4 have been determined by X-ray diffraction methods. All compounds have been studied employing elemental analysis, IR, and UV-Visible spectroscopic techniques. The results have been compared with previous data reported for complexes with similar structures.

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Acetato and formato copper(II) paddle-wheel complexes with nitrogen ligands

Cited by 21 publications

References 23 publications

Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

Reactivity of homoleptic and heteroleptic core paddle wheel Cu(II) compounds

Crystal structure and spectroscopic properties of polymeric adducts of the tetra-μ-haloaspirinate-dicopper(II)

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