Complex polymeric cations of copper(I) with graphite- and diamond-related lattices; crystal structures of poly-tris(.mu.-2,5-dimethylpyrazine)dicopper(I) hexafluorophosphate and poly-bis(.mu.-2,5-dimethylpyrazine)copper(I) hexafluorophosphate

Otieno, Tom; Rettig, Steven J.; Thompson, Robert C.; Trotter, James

doi:10.1021/ic00061a015

Cited by 97 publications

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“…Within the coordination polyhedron both Cu-Cl and Cu-N bond distances of 2.349(1) and 2.038(4) A, respectively, fall well withinin the range of those previously reported for related compounds (15)(16)(17)(18)(19)25,26) and do not deserve further comment. The layers, see Fig.…”

Section: Resultssupporting

confidence: 86%

“…Up to now, all the copper(1)-pyrazine complexes described in the literature (15)(16)(17)(18)(19) show the pyrazine as the only bridging ligand. It should be noted that this complex is new in the sense that it incorporates two different kinds of bridging ligands in the structure, namely the pyrazine and the chloride ion.…”

Section: Resultsmentioning

confidence: 96%

“…Since no d-d transitions are " expected for a dl0 complex, this band has been assigned to a metal-to-ligand charge transfer transition (MLCT). These MLCT bands appear at slightly higher energies, within the visible region, in most of Cu(1)-pyrazine complexes, affording orange or yellow colours (15)(16)(17)(18)(19). The positions of these bands depend upon the pyrazine substituents since methyl groups make pyrazine a poorer 7~ acceptor (16).…”

Section: Resultsmentioning

confidence: 99%

“…Despite this, since the copper(I)-pyrazine dimers reported in the early 1960s by Lever et al (13,14) nearly three decades passed until Thompson and co-workers described the first one-dimensional structurally described pyrazine-bridged copper(1) complex (15), and, to the best of our knowledge, only a few one-(15-17), two-(17-19), and three-dimensional (19) pyrazine-bridged copper(1) complexes have been reported so far. Furthermore, it should be stressed that several of these compounds were obtained by serendipitous reduction of copper (11) to copper(1) (15,18,19).…”

Section: Introductionmentioning

confidence: 99%

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A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

Moreno¹,

Suárez‐Varela²,

Colacio³

et al. 1995

Can. J. Chem.

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Abstract:The crystal structure of bright-red crystals of the bidimensional polynuclear diamagnetic (kchloro)(k-pyrazine)copper(I) complex has been analyzed from X-ray diffraction data. The structure was solved by the heavy-atom method. Full-matrix least-squares refinement based on 673 reflections with F > 4u(F) converged to a final R = 0.043 and R,, = 0.048. Crystals of this complex are monoclinic, space group P2/c, a = 3.814(1), b = 6.356(1) and c = 11.497(5) A; P = 96.04(2)", Z = 2. The structure consists of planes of copper(1) atoms linked by pyrazine and C1-bridges, each Cu(1) being in a distorted tetrahedral environment formed by two chloride ions and two nitrogen atoms belonging to two pyrazine molecules, with bond distances of Cu-CI = 2.349(1) and Cu-N = 2.038(4) A. Vibrational and electronic spectroscopy of the title compound is also reported.Key words: two-dimensional copper(1)-pyrazine complexes.RCsumC : Utilisant les donnCes de la diffraction des rayons X, on a dCterminC la structure cristalline des cristaux rouge brillant du complexe diamagnktique polynuclCaire bidimensionnel (p-chloro)(k-pyrazine)cuivre(I). On a rCsolu la structure par la mkthode des atomes lourds et on l'a affinCe par la mCthode des moindres carrts

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

Moreno¹,

Suárez‐Varela²,

Colacio³

et al. 1995

Can. J. Chem.

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“…chains and two-dimensional square lattice extended arrays. Two-dimensional hexagonal and three-dimensional diamondlike lattices have also been observed in copper(1) complexes (14). Of particular interest is the ability of these ligands to mediate magnetic exchange in complexes where the metal is in a paramagnetic ground state.…”

Section: Introductionmentioning

confidence: 99%

Antiferromagnetism and metamagnetism in 1,4-diazine and pyridine complexes of nickel(II)

Otieno¹,

Thompson²

1995

Can. J. Chem.

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Several nickel(I1) complexes containing pyridine (py), pyrazine (pyz) or methylpyrazine (mepyz) have been synthesized and characterized by vibrational and electronic spectroscopy, differential scanning calorimetry, and magnetic susceptibility studies to cryogenic temperatures. A comparison of the magnetic properties of the polymeric diazine-bridged complexes, Ni(pyz),X, (X = CI or NO,), N~(~~z ) (~-C H , C , H , S O , )~, Ni(mepyz)(NO,),, and Ni(pyz),(CH,SO,),.CH,OH with those of the related monometallic systems, Ni(py),X, (X = Cl, p-CH3C6H4S03 or CH,SO,) and Ni(mepyz), (NO,),.H,O provides evidence for weak antiferromagnetic coupling between metal centers mediated by bridging diazine ligands in the former group of compounds.The magnetic properties were analyzed employing a model for S = 1 which takes into account zero-field splitting and employs a molecular field term to account for weak magnetic exchange. The compounds Ni(pyz)CI, and Ni(py)Cll show metamagnetic behaviour with critical fields of 13 and 2 kOe, respectively, at 2 K. In these compounds nickel ions, linked in chains by bridging chlorides, exhibit intrachain ferromagnetic and interchain antiferromagnetic exchange. In Ni(pyz)Cl, bridging pyrazine ligands are considered to provide the pathway for the antiferromagnetic coupling resulting in a high critical field.Key words: nickel(II), pyrazine, pyridine, complexes, metamagnetism, antiferromagnetism.Resume : On a synthktisC plusieurs complexes de nickel contenant la pyridine (py), la pyrazine (pyz), la mCthylpyrazine (

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Organisch-anorganische Hybridmaterialien: von „einfachen” Koordinationspolymeren zu Molybdänoxiden mit Organodiamin-Templaten

1999

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Eine Blaupause für das Design von Oxidmaterialien kann uns die Natur liefern, da sie bei Biomineralisationsprozessen und bei der Hydrothermalsynthese komplexer Mineralien anorganische Mikrostrukturen beeinflussen kann. Eine Anleihe bei dieser Fähigkeit führt zu einer ganz neuen Klasse von Materialien, bei denen organische Komponenten eine Rolle bei der Kontrolle über die anorganischen Mikrostrukturen spielen. Der Einsatz von Verbindungen aus der beständig wachsenden Klasse polymerer Komplexkationen ermöglicht die Herstellung von Molybdänoxiden mit neuartigen Substrukturen (siehe das im Bild gezeigte Beispiel).

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Complex polymeric cations of copper(I) with graphite- and diamond-related lattices; crystal structures of poly-tris(.mu.-2,5-dimethylpyrazine)dicopper(I) hexafluorophosphate and poly-bis(.mu.-2,5-dimethylpyrazine)copper(I) hexafluorophosphate

Cited by 97 publications

References 0 publications

A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

Antiferromagnetism and metamagnetism in 1,4-diazine and pyridine complexes of nickel(II)

Organisch-anorganische Hybridmaterialien: von „einfachen” Koordinationspolymeren zu Molybdänoxiden mit Organodiamin-Templaten

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