Cationic Nickel(II) Complexes with Azine Diphosphines - Structural and Electrochemical Study.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F02%3A27020287" target="_blank" >RIV/67985858:_____/02:27020287 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cationic Nickel(II) Complexes with Azine Diphosphines - Structural and Electrochemical Study.

Popis výsledku v původním jazyce

Nickel(II) complexes of azine diphosphine ligands, PR2CH2C(But)NNC(But)CH2PR2 (R = Ph, But, Pri, C6H11), were prepared for the first time by reactions of anhydrous NiX2 (X = Cl, Br, I) with ligands. Complexes are cationic, the counterion being either simple halide anion or, in two cases, 1/2 [NiCl4]2-. The azine diphosphines are coordinated terdentately in (E,Z) configuration forming thereby a bicyclic ligand frame (five and six membered ring) with diphosphine bite angles 160 - 165 . A balance of stereoelectronic factors governing square planar vs. tetrahedral coordination of the ligands is suggested. Structures of four of the complexes with bulky ligands (R = But, X- = Cl-, Br-, I-; R = C6H11, X- = 1/2 [NiCl]2-) were determined by X-ray diffraction and qualitative Hückel MO calculations on model undistorted square planar [trans-NiX(NH2)(PH3)2]+ were carried out to elucidate the contributions of steric and electronic factors. Two reduction and two oxidation processes depending on the s

Název v anglickém jazyce

Cationic Nickel(II) Complexes with Azine Diphosphines - Structural and Electrochemical Study.

Popis výsledku anglicky

Nickel(II) complexes of azine diphosphine ligands, PR2CH2C(But)NNC(But)CH2PR2 (R = Ph, But, Pri, C6H11), were prepared for the first time by reactions of anhydrous NiX2 (X = Cl, Br, I) with ligands. Complexes are cationic, the counterion being either simple halide anion or, in two cases, 1/2 [NiCl4]2-. The azine diphosphines are coordinated terdentately in (E,Z) configuration forming thereby a bicyclic ligand frame (five and six membered ring) with diphosphine bite angles 160 - 165 . A balance of stereoelectronic factors governing square planar vs. tetrahedral coordination of the ligands is suggested. Structures of four of the complexes with bulky ligands (R = But, X- = Cl-, Br-, I-; R = C6H11, X- = 1/2 [NiCl]2-) were determined by X-ray diffraction and qualitative Hückel MO calculations on model undistorted square planar [trans-NiX(NH2)(PH3)2]+ were carried out to elucidate the contributions of steric and electronic factors. Two reduction and two oxidation processes depending on the s

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA203%2F01%2F0554" target="_blank" >GA203/01/0554: Nové vysoce aktivní katalyzátory pro Heckovu reakci</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Inorganica Chimica Acta

ISSN

0020-1693

e-ISSN

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Svazek periodika

338

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

201-209

Kód UT WoS článku

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EID výsledku v databázi Scopus

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