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Homoleptic versus heteroleptic trinuclear systems with mixed L-cysteinate and D-penicillaminate regulated by a diphosphine linker.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 3/21/2020, Vol. 49 Issue 11, p3503-3509, 7p
- Publication Year :
- 2020
-
Abstract
- Controlled generation of homoleptic versus heteroleptic Au <superscript>I</superscript><subscript>2</subscript> M (M = Ni<superscript>II</superscript>, Zn<superscript>II</superscript>) trinuclear complexes, which is achieved by a slight change in the diphosphine P^P linker of digold(I) metalloligands, [Au<subscript>2</subscript>(P^P)(D -pen)<subscript>2</subscript>]<superscript>2−</superscript> (L1<superscript>P^P</superscript>; D -pen = D -penicillaminate) and [Au<subscript>2</subscript>(P^P)(L -cys)<subscript>2</subscript>]<superscript>2−</superscript> (L2<superscript>P^P</superscript>; L -cys = L -cysteinate), is reported. The reactions of a 1 : 1 mixture of L1<superscript>dppm</superscript> and L2<superscript>dppm</superscript> (dppm = bis(diphenylphosphino)methane) with M = Ni<superscript>II</superscript>, Zn<superscript>II</superscript> gave the homoleptic Au <superscript>I</superscript><subscript>2</subscript> M complexes, [M(L1<superscript>dppm</superscript>)] and [M(L2<superscript>dppm</superscript>)], which co-crystallized to form [M(L1<superscript>dppm</superscript>)]·[M(L2<superscript>dppm</superscript>)] (1<subscript>M</subscript>). Similar reactions using L1<superscript>dppe</superscript> and L2<superscript>dppe</superscript> (dppe = bis(diphenylphosphino)ethane), instead of L1<superscript>dppm</superscript> and L2<superscript>dppm</superscript>, led to the selective production and crystallization of the heteroleptic Au <superscript>I</superscript><subscript>2</subscript> M complex, [M(L3<superscript>dppe</superscript>)] (2<subscript>M</subscript>; L3<superscript>dppe</superscript> = [Au<subscript>2</subscript>(dppe)(L -cys)(D -pen)]<superscript>2−</superscript>), accompanied by the scrambling of L1<superscript>dppe</superscript> and L2<superscript>dppe</superscript>. The homoleptic 1<subscript>M</subscript> and the heteroleptic 2<subscript>M</subscript> showed different absorption (green versus blue) and emission (yellow versus orange) colours for M = Ni<superscript>II</superscript> and Zn<superscript>II</superscript>, respectively. [ABSTRACT FROM AUTHOR]
- Subjects :
- CRYSTALLIZATION
ETHANES
METHANE
ABSORPTION
COLOR
ZINC compounds synthesis
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 49
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 142295185
- Full Text :
- https://doi.org/10.1039/d0dt00440e