02414nas a2200217   4500008004100000022001400041245016000055210006900215260000800284300001600292490000700308520160800315100001501923700002301938700001601961700001601977700002701993700002002020700003102040856012502071       2026                        eng d  a0020-166900aStructural insights into AgBi(SC12H25)4 mixed-metal n-alkanethiolate: heterometallic thiolate bridging and metallophilic interaction-directed self-assembly0 aStructural insights into AgBiSC12H254 mixedmetal nalkanethiolate  cJUL  a15608-156170 v653 a<p>
	Long-chain metal n-alkanethiolates (MTs) are inorganic-organic hybrid materials, characterized by a metal-sulfur inorganic central plane sandwiched between hydrocarbon bilayers. Though MTs are known for over a century now, their crystal structures are conclusively established only recently. Mixed-metal thiolates (MMTs) are structurally similar to MTs and contain heterometals in the inorganic plane. With a very limited number of MMTs explored to date, their structures remain completely unknown. Here we report the synthesis and structural elucidation of a mixed-metal thiolate, AgBi(SC12H25)4, providing direct insight into heterometal arrangement by combining X-ray absorption fine structure spectroscopy and density functional theory calculations. The results establish that the AgBi MMT contains discrete molecular units like [RS-Ag-SR-Bi(SR)2] containing both Ag and Bi metals with an intramolecular heterometallic mu 2-thiolate bridging. The units further share strong intermolecular Ag &amp; centerdot;&amp; centerdot;&amp; centerdot;Bi metallophilic interactions at a very short distance of 2.72 &amp; Aring;, playing a crucial role in the self-assembly. Intermolecular metal-to-metal charge transfer occurring both directly and via the thiolate bridge gives rise to the absorption maxima observed in the UV-Vis spectrum. The intermolecular interactions predominantly arise from the thiolate group (RS-) of one unit interacting with the Ag+ and Bi3+ centers of the adjacent units, in addition to the Ag &amp; centerdot;&amp; centerdot;&amp; centerdot;Bi metallophilic interaction.</p>
1 aDas, Mouli1 aMukherjee, Moumita1 aDas, Shovan1 aDatta, Ayan1 aPriolkar, Kaustubh, R.1 aJohn, Neena, S.1 aPrasad, Bhagavatula, L. V.  uhttps://library.ncl.res.in/content/structural-insights-agbisc12h254-mixed-metal-n-alkanethiolate-heterometallic-thiolate