TY - JOUR
T1 - Assembly of Heterometallic Silver(I)-Copper(I) Alkyl-1,3-diynyl Clusters via Inner-Core Expansion
AU - Hau, Sam C.K.
AU - Yeung, Margaret C.L.
AU - Yam, Vivian W.W.
AU - Mak, Thomas C.W.
N1 - Funding Information:
This work is dedicated to the memory of Dr. Daniel Y. Chang (1906-1982). We gratefully acknowledge financial support by the Wei Lun Foundation and the award of a Postdoctoral Research Fellowship to S. C. K. Hau by The Chinese University of Hong Kong. V.W.-W.Y. acknowledges the support from The University of Hong Kong under the University Grants Committee Areas of Excellence Scheme (AoE/P-03/08) from the Research Grants Council of Hong Kong Special Administrative Region, China
PY - 2016/10/19
Y1 - 2016/10/19
N2 - New tetranuclear supramolecular precursors [(R - C≡C - C≡C)Ag]4 (R = iPr, tBu, and chx) are employed to construct a series of heterometallic silver(I)-copper(I) alkyl-1,3-diynyl cluster complexes (1-9) that bear a common CuAg3 core (normally trigonal-planar, but can be distorted to pyramidal) consolidated by cupro-argentophilic interaction under 3.12 Å, as found in 1 and 2. The photophysical properties of the multinuclear supramolecular precursors and selected complexes have been investigated. The present results strongly suggest that the assembly of medium-nuclearity clusters 3 to 9 is initiated by accretion of additional Ag(I) ions by the ubiquitous CuAg3 template through argentophilic (<3.4 Å) interaction, with cooperative cuprophilic enhancement (<2.76 Å) in the case of compound 9. To our knowledge, the present study provides the first report of conversion of a Group 11 homonuclear cluster into a heteronuclear one of higher nuclearity via inner-core expansion.
AB - New tetranuclear supramolecular precursors [(R - C≡C - C≡C)Ag]4 (R = iPr, tBu, and chx) are employed to construct a series of heterometallic silver(I)-copper(I) alkyl-1,3-diynyl cluster complexes (1-9) that bear a common CuAg3 core (normally trigonal-planar, but can be distorted to pyramidal) consolidated by cupro-argentophilic interaction under 3.12 Å, as found in 1 and 2. The photophysical properties of the multinuclear supramolecular precursors and selected complexes have been investigated. The present results strongly suggest that the assembly of medium-nuclearity clusters 3 to 9 is initiated by accretion of additional Ag(I) ions by the ubiquitous CuAg3 template through argentophilic (<3.4 Å) interaction, with cooperative cuprophilic enhancement (<2.76 Å) in the case of compound 9. To our knowledge, the present study provides the first report of conversion of a Group 11 homonuclear cluster into a heteronuclear one of higher nuclearity via inner-core expansion.
UR - http://www.scopus.com/inward/record.url?scp=84992199664&partnerID=8YFLogxK
U2 - 10.1021/jacs.6b08674
DO - 10.1021/jacs.6b08674
M3 - Journal article
AN - SCOPUS:84992199664
SN - 0002-7863
VL - 138
SP - 13732
EP - 13739
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 41
ER -