Die verschiedenen Typen von Komplexsalzen des α‐α′‐Dipyridyls mit Kupfer, Zink, Cadmium, Eisen, Nickel, Kobalt und Rhodium

Jaeger, F. M.; Hoogesteger, Jaime

doi:10.1002/zaac.19362270308

Cited by 99 publications

(37 citation statements)

References 16 publications

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“…[54,55] Ϫ Optical resolution 3 ] 2ϩ , which did not occur spontaneously, was achieved by a modification of the procedure of Dwyer and Gyarfas using potassium antimonyl tartrate. [56] Ϫ Concomitant crystallization of β-and γ-[Ni(bpy) 3 ](PF 6 ) 2 could be achieved by slow evaporation of the solvents from an acetone/water (2:1) solution at ambient temperature.…”

Section: Methodsmentioning

confidence: 99%

Racemic Compound FormationversusConglomerate Formation with [M(bpy)3](PF6)2 (M = Ni, Zn, Ru); Molecular and Crystal Structures

Breu

Domel

Stoll

2000

Eur. J. Inorg. Chem.

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Minor modifications in molecular size and shape induced by variation of the central atom drastically alter the crystallization behaviour of the hexafluorophosphate salts of [M(bpy)3]2+. With M = Ru, racemic solutions crystallize as true racemates in the β‐type [P3¯c1, a = 10.6453(5), c = 16.2987(9) Å, Z = 2], while for M = Zn the racemic structure cannot be obtained, as spontaneous resolution {γ‐type [P31, a = 10.3873(5), c = 26.1309(16) Å, Z = 3]} is the only crystallization path observed. For [Ni(bpy)3](PF6)2, crystals of both structural types can be obtained concomitantly from the same crystallization batch. The γ‐phase is systematically twinned by merohedry. The dramatic and unpredictable change in the packing pattern of the very similar building blocks within this series arises from a delicate balance between the intermolecular forces. Distinct intermolecular interactions with different directionalities can be identified in the two structure types. Through careful analysis of the crystal and molecular structures, a trend with respect to molecular size and shape on going from [Ru(bpy)3](PF6)2 to [Zn(bpy)3](PF6)2 can be established. Even though one might speculate that increasing the size of the molecular cation should destabilize the β‐type structure relative to the γ‐type, no conclusive rationalization based solely on structural parameters can be given as regards why the relative order of the two local minima on the energy hypersurface should become inverted.

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Section: Methodsmentioning

confidence: 99%

Racemic Compound FormationversusConglomerate Formation with [M(bpy)3](PF6)2 (M = Ni, Zn, Ru); Molecular and Crystal Structures

Breu

Domel

Stoll

2000

Eur. J. Inorg. Chem.

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“…When the same components were taken in the 1:2:6 mol ratio, compound 1 resulted in a higher yield, but the crystals were not of quality needed for the X-ray structure analysis. Single crystals of 1 formed also by slow evaporation of aqueous solutions containing [29] in the ratios 1:1 or 1:2. The compound prepared is moderately stable in air, soluble in hot water and rather insoluble in common organic solvents.…”

Section: Synthesismentioning

confidence: 99%

A new heterometallic (Ni2+ and Cr3+) complex – Crystal structure and spectroscopic characterization

Jurić

Planinić

Žilić

et al. 2009

Journal of Molecular Structure

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“…The starting species [Cu(bpy) 3 ]Cl 2 ·6H 2 O was prepared according to the method described in the literature [21]. All other reagents were purchased from commercial sources, and used …”

Section: Materials and Physical Measurementsmentioning

confidence: 99%

Synthesis, crystal structures and magnetic properties of the oxalate-bridged single CuIICuII and cocrystallized CuIIZnII systems. Three species (CuCu, CuZn, ZnZn) in the crystalline lattice

et al. 2015

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Two novel oxalate-bridged species: homometallic Cu II Cu II , [{Cu(bpy)Cl} 2 (µ-C 2 O 4 )] (1) and heterometallic Cu II Zn II , [CuZn{(bpy)Cl} 2 (µ-C 2 O 4 )] (2) (bpy = 2,2'-bipyridine), were synthesized and characterized by elemental analyses, IR and EPR spectroscopy, magnetic susceptibility measurements and single-crystal X-ray diffraction studies. The compounds crystallise in the same, triclinic 1 P space group. Their crystal structures consist of the binuclear entities [M(bpy)Cl(µ-C 2 O 4 )M(bpy)Cl] [M = Cu 2+ (1); M = Cu 2+ and/or Zn 2+ (2)] linked by the intermolecular π···π stacking interactions. Highly unusual, compound 2 is a cocrystallized system containing three types of mutually analogous entities: [Cu(bpy)Cl(µ-C 2 O 4 )Cu(bpy)Cl] (CuCu; the same unit as in 1), [Cu(bpy)Cl(µ-C 2 O 4 )Zn(bpy)Cl] (CuZn) and [Zn(bpy)Cl(µ-C 2 O 4 )Zn(bpy)Cl] (ZnZn), randomly distributed throughout the crystalline lattice in the molar ratio near to 1 : 2 : 1, respectively. Each metal atom in both 1 and 2 displays a square-pyramidal coordination involving two N atoms from the coordinated 2,2'-bipyridine ligand and two O atoms from the bridging oxalate group in the basal plane, and one chlorine atom in the apical position. Magnetization measurements, supported also by the EPR study, reveal a strong antiferromagnetic exchange interaction (J = -295(2) and -294(2) cm -1 , for 1 and 2, respectively; H = -JS 1 ·S 2 ) between two copper(II) ions through the oxalate bridge.

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Die verschiedenen Typen von Komplexsalzen des α‐α′‐Dipyridyls mit Kupfer, Zink, Cadmium, Eisen, Nickel, Kobalt und Rhodium

Cited by 99 publications

References 16 publications

Racemic Compound FormationversusConglomerate Formation with [M(bpy)3](PF6)2 (M = Ni, Zn, Ru); Molecular and Crystal Structures

Racemic Compound FormationversusConglomerate Formation with [M(bpy)3](PF6)2 (M = Ni, Zn, Ru); Molecular and Crystal Structures

A new heterometallic (Ni2+ and Cr3+) complex – Crystal structure and spectroscopic characterization

Synthesis, crystal structures and magnetic properties of the oxalate-bridged single CuIICuII and cocrystallized CuIIZnII systems. Three species (CuCu, CuZn, ZnZn) in the crystalline lattice

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