Mechanochemical synthesis of mononuclear gold() halide complexes of diphosphine ligands with tuneable luminescent properties
A mechanochemical method is reported for the synthesis of Au(diphos)X complexes of diphosphine (diphos = XantPhos and N -XantPhos) ligands and halide ions (X = Cl and I). The Au(XantPhos)X ( 1 : X = Cl; 2 : X = I) and Au( N -XantPhos)Cl ( 3 ) complexes exhibited either yellowish green ( 1 ) or bluis...
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Published in | Dalton transactions : an international journal of inorganic chemistry Vol. 5; no. 38; pp. 13337 - 13344 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
05.10.2021
|
Subjects | |
Online Access | Get full text |
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Summary: | A mechanochemical method is reported for the synthesis of Au(diphos)X complexes of diphosphine (diphos = XantPhos and
N
-XantPhos) ligands and halide ions (X = Cl and I). The Au(XantPhos)X (
1
: X = Cl;
2
: X = I) and Au(
N
-XantPhos)Cl (
3
) complexes exhibited either yellowish green (
1
) or bluish green (
2
) emission, whereas
3
was seemingly non-emissive in the solid state at room temperature. Blue- (
2B
) and bluish green (
2G
) luminescent concomitant solvates of
2
were obtained by recrystallization. Luminescent colour changes from blue (
2B
) or bluish green (
2G
) to yellow were observed when these forms were subjected to mechanical stimulus, while the original emission colour can be recovered in the presence of solvent vapours. Moreover, the luminescence of
2B
can be reversibly altered between blue and yellow by heating/cooling-cycles. These results demonstrate the power of mechanochemistry in the rapid (4 min reaction time), efficient (up to 98% yield) and greener synthesis of luminescent and stimuli-responsive gold(
i
) complexes.
A mechanochemical method was developed for the synthesis of Au(XantPhos)X (
1
: X = Cl;
2
: X = I) and Au(
N
-XantPhos)Cl (
3
) complexes. |
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Bibliography: | 2074757 Electronic supplementary information (ESI) available: Detailed experimental section, HR-MS 2074756 ( 2B 1 For ESI and crystallographic data in CIF or other electronic format see DOI 2G and H and P NMR spectra, PXRD patterns, solid state photophysical data, STA analysis. Crystal data, details of data collections and refinements. CCDC 10.1039/d1dt01751a 31 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/d1dt01751a |