“…[11] Thef ive types of complex coordination modes of alkynes on the surface of metal clusters are described in literatures,w hich can tune their electronic structure through p-conjugation. [12] Recently,Wang et al reported aseries of structurally precise alkynylate metal clusters including:(a) mixed alkyne and phosphine protected monometallic clusters, [13] namely Au 19 (dppp:b is(diphenylphosphino)-pentane), and (b) the homoleptic alkyne protected gold clusters, [14] 26 .I na ddition, the crystal structures of Au-Ag bimetallic clusters with composition, [15] were found to be very stable over aperiod of month or more under the ambient conditions.H owever, still some issues are there to be addressed:( 1) the aforementioned Au 34 Ag 28 [15a] is the onlyexample of homoleptic alkynylated Au and Ag bimetal cluster with precise crystal structure and (2) so far, the phenyl acetylene that is,t he simplest known aromatic alkyne has been regularly used to protect the metal clusters.F urthermore,o nce the phenyl group is replaced or an ew functional group is added to phenyl group,i ts effect on coordination model, structure and properties remained unclear. Hence,i n order to expand the library of homoleptic alkynylated Au and Ag bimetal cluster for gaining deep insight, it becomes essential to synthesize and determine the precise structure of the novel bimetal nanoclusters protected by atypical homoleptic alkyne ligands.…”