Untersuchungen zur reduktiven Eliminierung des Biphenyl-Systems aus substituierten cis-Bis(phenyl)bis(triphenylphosphan)platin(II)-Verbindungen/On the Reductive Elimination of the Biphenyl System from Substituted cis-Bis(phenyl)bis(triphenylphosphane)platinum(II) Compounds

The 5,5′‐bis(hydroxyalkyl)‐2,2′‐bipyridines 4a–c (Scheme 1) were prepared either in one step (4b, 4c) or in four steps (4a) starting with 5,5′‐dimethyl‐2,2′‐bipyridine in each case. Reaction of 4a–c with mesyl chloride afforded the bis(mesylates) [–C5H3N–(CH2)n–CH2–OSO2Me]2 5a–c [n = 1 (a), 2 (b), 3 (c)], which could easily be transformed into the diphosphanes 6a–c by reaction with LiPPh2. Treatment of 6c, 6b with Cl2Pt(NCPh)2 and (RC6H4)2Pt(COD) according to the high‐dilution method resulted in the formation of the tetraphosphadiplatinacyclophanes [–C5H3N–(CH2)4–PPh2PtCl2PPh2–(CH2)4–C5H3N–]2 (7c) and [–C5H3N–(CH2)3–PPh2Pt(C6H4R)2PPh2–(CH2)3–C5H3N–]2 (8b, 9b) (8b: R = H, 9b: R = tBu), respectively (Scheme 2). The molecular structures of 8b and 9b were elucidated by X‐ray structural analyses. The noncoordinated bipyridine moieties in 8b were employed to encapsulate copper(I) to give the host/guest complex 10b (Scheme 3), which was investigated by FAB‐MS, NMR spectroscopy, and cyclovoltammetry. 10b exhibited a quasi‐reversible oxidation at E1/2 = –0.31 V and an electrodeposition‐redissolution redox system at E1/2 = –0.79 V, owing to the formation of copper at the surface of the working electrode.

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Inclusion of Copper(I) into a Novel Bipyridine-Containing Tetraphosphadiplatinacyclophane

Lindner

Veigel

Ortner

et al. 2000

Eur. J. Inorg. Chem.

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Kernspin‐Kopplungskonstanten mit Platin‐195 als Kriterien für die Konfigurations‐Bestimmung platin‐organischer Verbindungen des zweiwertigen Platins

et al. 1984

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Die platin‐organischen Verbindungen [Pt(η4−1,5‐cyclooctadien)(XC6H4)2] und cis‐[Pt(P(n‐Bu)3)2‐(XC6H4)] (X  H, 4‐CH3, 4‐(CH3)3C, 4‐(CH3)2N, 3‐F, 4‐F, 4‐CH3O, 4‐CF3; 3a – h, cis‐4a – h) sowie trans‐[Pt(P(n‐Bu)3)2(4‐CH3OC6H4)2] (trans‐4g) und trans‐[Pt(P(n‐Bu)3)2(4‐CF3C6H4)2] (trans‐4h) wurden 31P‐, 13C‐ und 1−NMR‐spektroskopisch untersucht. Die Kopplungskonstanten 1J[195Pt, 31P], nJ[195Pt, 13C], nJ[195Pt, H] und 2J[31P, 13C] zeigen eine eindeutige Abhängigkeit von der Konfiguration der Liganden am dsp2‐hybridisierten Platin; sie können daher zur sicheren Konfigurations‐Bestimmung verwendet werden.

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Untersuchungen über den Mechanismus der reduktiven Eliminierung des Biphenyl‐;Systems aus cis‐Diphenylbis‐(triphenylphosphan)platin(II)‐Verbindungen: Einfluß der Elektronendichten am Platin auf die Aktivierungsparameter

et al. 1984

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Untersuchungen zur reduktiven Eliminierung des Biphenyl-Systems aus substituierten cis-Bis(phenyl)bis(triphenylphosphan)platin(II)-Verbindungen/On the Reductive Elimination of the Biphenyl System from Substituted cis-Bis(phenyl)bis(triphenylphosphane)platinum(II) Compounds

Abstract: Abstract The Compounds cis-[Pt(PPh3)2(4-X-C6H4)2] [X = F, Cl, CF3, OCH3, N(CH3)2] and cis-[Pt(PPh3)2(4-X-C6H4)(Y-C6H4)] [X = F/Y = 3 Cl, 4-C1, 3-CH3 Show more

Cited by 26 publications

References 5 publications

Inclusion of Copper(I) into a Novel Bipyridine-Containing Tetraphosphadiplatinacyclophane

Inclusion of Copper(I) into a Novel Bipyridine-Containing Tetraphosphadiplatinacyclophane

Kernspin‐Kopplungskonstanten mit Platin‐195 als Kriterien für die Konfigurations‐Bestimmung platin‐organischer Verbindungen des zweiwertigen Platins

Untersuchungen über den Mechanismus der reduktiven Eliminierung des Biphenyl‐;Systems aus cis‐Diphenylbis‐(triphenylphosphan)platin(II)‐Verbindungen: Einfluß der Elektronendichten am Platin auf die Aktivierungsparameter

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