Syntheses, crystal structures and magnetic properties of copper(ii) dicyanamide complexes; dinuclear, chain and ladder compounds

Vangdal, Brita; Carranza, José; Lloret, Francesc; Julve, Miguel; Sletten, Jorunn

doi:10.1039/b105981p

Cited by 156 publications

(75 citation statements)

References 39 publications

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“…In recent years, much attention has been devoted to dicyanamide-anion-(dca-) bridged coordination polymers [30][31][32][33][34][35][36][37][38][39][40][41][42] for the large variety of magnetic properties, especially the -M(dca) 2 series of compounds, which have isomorphous rutile-like structure, display ferromagnetism (Co, Ni) [43][44][45][46], spin-canted antiferromagnetism (Cr, Mn, Fe) [47,48], and paramagnetism (Cu) [45,46]. Of further importance, from a structural perspective, when auxiliary L ligands are introduced to the ternary M II -dca-L systems, different coordination architectures, such as mononuclear and dinuclear compounds [49], 1D chains [50][51][52][53][54][55][56][57][58], 2D (4,4) or (6,3) [59][60][61][62][63] sheets, and 3D network topologies [64][65][66][67], could be constructed (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Crystal Structures, and Magnetic Properties of Ternary M(II)-Dicyanamide-hydroxypyridine Complexes

Zheng

2013

Journal of Inorganic Chemistry

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Three two-dimensional (2D) and 3D supramolecular coordination architectures based on ternary M(II)-dicyanamide-2-hydro- (2), and [Mn(hepH) 2 (dca) 2 ] (3) (dca = dicyanamide, hmpH = 2-(hydroxymethyl)pyridine, hepH = 2-(hydroxyethyl)pyridine), have been synthesized. 1 is a mononuclear Co(II) complex. The mononuclear units are interlinked into a 2D (4,4) hydrogen-bonded layer via O-H⋅ ⋅ ⋅ N hydrogen bonds between the hydroxyl groups and the noncoordinating nitrile ends. These 2D layers are further extended into a 3D supramolecular architecture via the interlayer pyridyl-pyridyl stacking interaction. 2 has a 1D coordination chain structure formed by the double 1,5 -dca bridged dinuclear [Cu2( 1,5 -dca) 2 (hmpH) 2 ] unit and the 1,3 -dca bridges via weak Cu-N coordination, and these 1D coordination chains are further extended into 2D hydrogen-bonded layers via strong O-H⋅ ⋅ ⋅ N hydrogen-bonding interaction between the hydroxyl groups and the noncoordinating nitrile ends. 3 is a 2D (4,4) coordination network made of 1D [Mn(hepH)( 1,5 -dca)] helical chain units and interchain double ( 1,5 -dca) bridges. Pairs of [Mn(hepH)( 1,5 -dca)] helical chains are interlinked by the double ( 1,5 -dca) bridges into a racemic coordination layer structure, which is further extended into a 3D hydrogen-bonded network. Magnetic studies reveal that weak antiferromagnetic exchange occurs in 3.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Crystal Structures, and Magnetic Properties of Ternary M(II)-Dicyanamide-hydroxypyridine Complexes

Zheng

2013

Journal of Inorganic Chemistry

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“…Each tzba 2-ligand bridges three dimeric units through a µ 2 -1,4N tetrazolate group and carboxyl group to form a ladder-like chain extending along the a-axis (Figure 1b), which is an attractive structural characteristic of 1. This kind of 1D ladder-like chain structure has been observed in many metal-organic frameworks, [13] but it is a rare occurance for tetrazolate polymers. [14] …”

Section: Structure Ofmentioning

confidence: 99%

Zinc(II) and Cadmium(II) Coordination Polymers Based on 3‐(5H‐Tetrazolyl)benzoate Ligand with Different Coordination Modes: Hydrothermal Syntheses, Crystal Structures and Ligand‐Centered Luminescence

Feng

Liu

et al. 2010

Eur J Inorg Chem

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Hydrothermal reaction of Na(3‐cba) (3‐cba = 3‐cyanobenzoate), NaN3 and a metal salt with either 2,2′‐bipyridine (2,2′‐bipy) or 1,10‐phenanthroline (phen) afforded four novel ZnII/CdII polymers, which have been structurally characterized by single‐crystal X‐ray diffraction analysis. In situ [2 + 3] cycloaddition reaction of nitrile and azide in the presence of a ZnII or CdII salt yielded the ligand 3‐(5H‐tetrazolyl)benzoate (3‐tzba2–) [3‐H2tzba = 3‐(5H‐tetrazolyl)benzoic acid]. The obtained polymers are formulated as [Zn2(3‐tzba)(N3)(OH)(2,2′‐bipy)] (1), [Zn(3‐tzba)(2,2′‐bipy)(H2O)]·3H2O (2), [Zn2(3‐tzba)2(phen)2]·H2O (3) and [Cd4(3‐tzba)2(N3)4(2,2′‐bipy)3]·H2O (4). A crystalline mixture of ZnII polymers 1 and 2 with infinite ladder‐like chain and zigzag chain structures, respectively, was obtained from the reaction in the presence of 2,2′‐bipy. The replacement of 2,2′‐bipy with phen as an auxiliary ligand yielded 3, which shows a pearl‐necklace‐like chain structure. Further, the introduction of CdII instead of ZnII resulted in the formation of 4, which has a 2D corrugated layer structure. The 3‐tzba2– ligands display four different coordination modes in 1–4, and modes μ2‐κN2:κO1,O2 (in 2) and μ3‐κN3:κO1:κO2 (in 3) are observed in tetrazolate‐5‐carboxylate polymers for the first time. Photoluminescent studies in the solid state at room and low temperature revealed that 1–4 exhibit interesting luminescent behaviors, and the relevant density of states (DOS) calculation results showed that their photoluminescence mainly originates from ligand‐centered emission and is dependent on the organic ligand incorporated into the polymer.

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“…The ferromagnetic coupling in low dimensional polynuclear compounds with µ 1,5 -dicyanamide bridging ligands is rare: it has been found in the sheet-like polymer of formula [Cu(µ 1,5 -dca) 2 (phen)] n and has been attributed to a case of accidental orthogonality between the magnetic orbitals. [24] Results and Discussion…”

Section: Introductionmentioning

confidence: 99%

Syntheses, Structure and Magnetic Properties of the First µ_1,5‐Dicyanamido‐Bridged Dinuclear Compounds [Ni(µ_1,5‐dca)(dca)(dpt)]₂ and [Ni(µ_1,5‐dca)(dca)(medpt)]₂

et al. 2003

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The first structural determination of dinuclear compounds with µ 1,5 -dicyanamide [dca, N(CN) 2 − ] as bridging ligand has been achieved with the products of formula [Ni(µ 1,5 -dca)(dca)(dpt)] 2 (1) and [Ni(µ 1,5 -dca)(dca)(medpt)] 2 (2) [dpt = bis(3-aminopropyl)amine and medpt = bis(3-aminopropyl)methylamine]. The X-ray diffraction analysis reveals dinuclear compounds with double µ 1,5 -dicyanamide bridges. The nickel atoms are hexacoordinate. The small differences in the terminal ligand (dpt or medpt) create a drastic change in the magnetic behaviour: the susceptibility measurements of 1

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Syntheses, crystal structures and magnetic properties of copper(ii) dicyanamide complexes; dinuclear, chain and ladder compounds

Cited by 156 publications

References 39 publications

Synthesis, Crystal Structures, and Magnetic Properties of Ternary M(II)-Dicyanamide-hydroxypyridine Complexes

Synthesis, Crystal Structures, and Magnetic Properties of Ternary M(II)-Dicyanamide-hydroxypyridine Complexes

Zinc(II) and Cadmium(II) Coordination Polymers Based on 3‐(5H‐Tetrazolyl)benzoate Ligand with Different Coordination Modes: Hydrothermal Syntheses, Crystal Structures and Ligand‐Centered Luminescence

Syntheses, Structure and Magnetic Properties of the First µ_1,5‐Dicyanamido‐Bridged Dinuclear Compounds [Ni(µ_1,5‐dca)(dca)(dpt)]₂ and [Ni(µ_1,5‐dca)(dca)(medpt)]₂

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Syntheses, crystal structures and magnetic properties of copper(ii) dicyanamide complexes; dinuclear, chain and ladder compounds

Cited by 156 publications

References 39 publications

Synthesis, Crystal Structures, and Magnetic Properties of Ternary M(II)-Dicyanamide-hydroxypyridine Complexes

Synthesis, Crystal Structures, and Magnetic Properties of Ternary M(II)-Dicyanamide-hydroxypyridine Complexes

Zinc(II) and Cadmium(II) Coordination Polymers Based on 3‐(5H‐Tetrazolyl)benzoate Ligand with Different Coordination Modes: Hydrothermal Syntheses, Crystal Structures and Ligand‐Centered Luminescence

Syntheses, Structure and Magnetic Properties of the First µ1,5‐Dicyanamido‐Bridged Dinuclear Compounds [Ni(µ1,5‐dca)(dca)(dpt)]2 and [Ni(µ1,5‐dca)(dca)(medpt)]2

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Syntheses, Structure and Magnetic Properties of the First µ_1,5‐Dicyanamido‐Bridged Dinuclear Compounds [Ni(µ_1,5‐dca)(dca)(dpt)]₂ and [Ni(µ_1,5‐dca)(dca)(medpt)]₂