Crystal Structure, Spectroscopic and Thermal Behaviour of Bis(saccharinato)tetrakis(pyridine)nickel(II) Dipyridine

The crystal structure of the title complex, [Cd(tsac) 2 (py) 3 ], has been determined by single crystal X-ray diffractometry. It crystallizes in the monoclinic space group C2/c with Z ϭ 8.The Cd 2ϩ cation is at the center of a square-bipyramidal environment, equatorially coordinated to two thiosaccharinate anions through their sulfur atoms and the nitrogen atom of one of them acting as a bidentate ligand. Nitrogen atoms of pyridine molecules occupy the fourth equatorial position and the two axial ones. The infrared and Strukturelle und spektroskopische Charakterisierung von Bis(thiosaccharinato)-trispyridin-cadmium(II)Inhaltsübersicht. Die Kristallstruktur der Titelverbindung, [Cd(tsac) 2 (py) 3 ], wurde röntgenographisch an Einkristallen bestimmt. Sie kristallisiert in der monoklinen Raumgruppe C2/c mit Z ϭ 8. Cd 2ϩ liegt auf dem Zentrum einer quadratischen Bipyramide und ist äquatorial von den Schwefelatomen zweier Thiosaccharinat-Anionen und dem Stickstoffatom eines dieser Anionen,

Section: Introductionmentioning

confidence: 59%

Section: Crystal Structurementioning

confidence: 99%

Section: Crystal Structurementioning

confidence: 99%

“…Different characteristic bands of the coordinated pyridine could be clearly identified, by comparison with the previously investigated saccharin/pyridine complexes [2,3].…”

Section: Infrared Spectrummentioning

confidence: 99%

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Structural and Spectroscopic Characterization of Bis(thiosaccharinato)-trispyridine-cadmium(II)

Tarulli

Quinzani

Baran

et al. 2002

“…± The bands at 1333 and 946 cm ±1 have been assigned to the symmetric and antisymmetric stretching modes of the CNS units of the saccharinate anion, as proposed in previous cases [14,18].…”

Section: Infrared Spectrummentioning

confidence: 82%

Characterization of Thallium(I) Saccharinate: an unprecedented Coordination of the Saccharinate Ligand

Baran

Wagner

Rossi

et al. 2001

The crystal structure of [Tl 2 (sac) 2 (H 2 O)] n (sac = saccharinate anion) has been solved using single crystal Xray diffraction. It crystallizes in the triclinic space group P 1 with Z = 2 and presents a polymeric structure formed by two saccharinate anions, one water molecule and two chemically different Tl I cations, one 8-coordinate and the other 5-coordinate. Saccharinate shows an unprecedented coordination behavior as it acts as chelating ligand through its N and carbonyl O atoms with the N atom interacting simultaneously with both metal centers, and participation of sulphonyl oxygen atoms in bonding. The most important features of the IR spectrum of the complex are discussed on the basis of the structural peculiarities.Charakterisierung von Thallium(I) Saccharinat: eine neuartige Bindungsform des Saccharinat Liganden Inhaltsu È bersicht. Die Kristallstruktur von [Tl 2 (sac) 2 (H 2 O)] n (sac = Anion des Saccharins) wurde ro È ntgenographisch an Einkristallen bestimmt. Es kristallisiert in der triklinen Raumgruppe P 1 mit Z = 2 und zeigt eine polymere Struktur, welche aus zwei Saccharinat Anionen, einem Wasser-Moleku È l und zwei chemisch verschiedenen Tl I -Kationen (eines mit der KZ = 8 und das andere mit der KZ = 5) besteht. Das Saccharinat zeigt eine neuartige Bindungsform, da es als Chelatligand u È ber seine N-und O(carbonyl)-Atome fungiert, wobei das N-Atom gleichzeitig mit beiden Metallzentren in Wechselwirkung tritt, und auch die Sulphonyl-Sauerstoffatome an den Bindungen beteiligt sind. Die wichtigsten Aspekte des IR-Spektrums des Komplexes werden an Hand der Strukturbesonderheiten analysiert und besprochen.

Crystal Chemistry of the Saccharinato Complexes of Trivalent Lanthanides and Yttrium

Piro¹,

Castellano²,

Baran³

2002

Saccharinate complexes of the fourteen trivalent lanthanide cations and Y III were prepared by reaction between the respective lanthanide carbonates and saccharin in aqueous solution. Their crystal structures were determined by single crystal X-ray diffractometry. They represent three different structural types. The first family, of composition [Ln(sac)(H 2 O) 8 ](sac) 2 ·H 2 O (sac ϭ anion of saccharin; Ln ϭ La,Ce,Pr,Nd.Sm,Eu), belongs to the monoclinic space group P2 1 /c with Z ϭ 4 and the Ln III cation is in a tricapped trigonal prismatic environment with nine-fold oxygen coordination. The second group of composition [Ln(sac) 2 (H 2 O) 6 ]-(sac)(Hsac)·4H 2 O with Ln ϭ Gd,Dy,Ho,Er,Yb,Lu,and Y, pertains to the triclinic P1-space group, with Z ϭ 2 and constitutes a new