Versatile N2S2 nickel-dithiolates as mono- and bridging bidentate, S-donor ligands to gold(I)
學年 102
學期 1
出版（發表）日期 2014-01-01
作品名稱 Versatile N2S2 nickel-dithiolates as mono- and bridging bidentate, S-donor ligands to gold(I)
作品名稱（其他語言）
著者 Pinder Tiffany A.; Montalvo Steven K.; Lunsford Allen M.; Hsieh, Chung-Hung; Reibenspies Joseph H.; Darensbourg Marcetta Y.
單位 淡江大學化學學系
出版者 Cambridge: R S C Publications
著錄名稱、卷期、頁數 Dalton Transactions 43, p.138-144
摘要 Development of square planar cis-dithiolate nickel complexes as metallo S-donor ligands focuses on the synthesis and structures of gold(I) heterometallic clusters derived from assemblage with three NiN2S2 complexes: Ni(bme-daco), Ni(bme-dach) and Ni(ema)2− (bme-daco = (bismercaptoethanediazacyclooctane); bme-dach = bismercaptoethanediazacycloheptane; and ema = N,N′-ethylenebis-2-mercaptoacetamide). With Ph3PAuCl as the gold source, examples of simple S-aurolation retaining the PPh3 on Au+ were obtained for [{Ni(bme-daco)}AuPPh3]+Cl− and [{Ni(ema)}2Au4(PPh3)4], where the latter complex demonstrated unsupported aurophilic interactions between [{Ni(ema)}Au2(PPh3)2] units in its X-ray crystal structure (Au–Au = 3.054 and 3.127 Å). Three compounds containing fully-supported digold units with Au–Au distances in the aurophilic range of 3.11 to 3.13 Å were found as stair-step structures in which planar NiN2S2 step treads are connected by planar S2Au2S2 risers at ca. 90°: [{Ni(bme-daco)}2Au2]2+(Cl−)2; [{Ni(bme-dach)}2Au2]2+(Cl−)2; and (Et4N+)2[{Ni(ema)}2Au2]2−. Electrochemical data from cyclic voltammograms demonstrated a positive shift in NiII/I couples for the [{NiN2S2}xAuy] complexes as compared to the NiN2S2 precursors and a ca. 700 mV decrease in communication between multiple NiN2S2 units as compared to [{NiN2S2}2Ni]2+ analogues in slant chair conformation. The analogy between NiN2S2 metallodithiolate ligands and diphosphine ligands holds here as in other examples of inorganic and organometallic complexes.
關鍵字
語言 en
ISSN 1477-9234
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Darensbourg Marcetta Y.
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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