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Issue 28, 2019
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4-Pyridylisocyanide gold(i) and gold(i)-plus-silver(i) luminescent and mechanochromic materials: the silver role

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Abstract

Crystallographic and DFT examination of the metalloligands [AuAr(CNPy-4)] (Ar = C6F5 (1), C6F3Cl2-3,5 (2)) and their silver complexes [Ag[AuAr(CNPy-4)]2](BF4) (3 and 4) support that the marked luminescence red-shifts observed on moving from 1 to 2, from 1,2 to 3,4, or upon grinding, are not caused by electronic differences (either by changing the aryls C6F5/C6F3Cl2, or by N coordination to silver), nor by non-existent Au⋯Ag interactions. They are always due to structural changes disturbing stronger π–π stackings in order to allow for shorter Au⋯Au interactions.

Graphical abstract: 4-Pyridylisocyanide gold(i) and gold(i)-plus-silver(i) luminescent and mechanochromic materials: the silver role

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Article information


Submitted
16 Apr 2019
Accepted
19 Jun 2019
First published
19 Jun 2019

Dalton Trans., 2019,48, 10412-10416
Article type
Communication

4-Pyridylisocyanide gold(I) and gold(I)-plus-silver(I) luminescent and mechanochromic materials: the silver role

V. Conejo-Rodríguez, M. N. Peñas-Defrutos and P. Espinet, Dalton Trans., 2019, 48, 10412
DOI: 10.1039/C9DT01618J

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