Gold 1995

Metallosupramolecular Structures Derived from a Series of Diphosphine-bridged Digold(I) Metalloligands with Terminald-Penicillamine

“…Since the observation of antirheumatoid activity in Auranofine ([(1-thio-b-D-glucopyranose-2,3,4,6-tetraacetato-S)-(triethylphosphine)gold(I)] ([8]; Figure 5) in 1972, [23] and its X-ray structural determination by Hill and coworkers in 1985, [24] several hundred gold(I) complexes coordinated by both thiolates and phosphines have been prepared and structurally characterized. [25][26][27][28][29] The early development of this class of materials was motivated by potential antirheumatoid and antitumor applications. [26,27,30] In addition, the excellent photoluminescence properties of this class of materials were observed in the 1990s, [28] thereby attracting additional researchers to explore this class of compounds.…”

“…The Au I 2 Co III hexanuclear complex [25] 21 was prepared from the 1 : 1 reaction of 2 and Co(CH 3 COO) 2 in ethanol/ water under aerobic conditions. [18] The resulting 12-charged product is readily crystallized as a perchlorate salt ( [25](ClO 4 ) 2 ) after the addition of NaClO 4 .…”

“…The Au I 2 Co III hexanuclear complex [25] 21 was prepared from the 1 : 1 reaction of 2 and Co(CH 3 COO) 2 in ethanol/ water under aerobic conditions. [18] The resulting 12-charged product is readily crystallized as a perchlorate salt ( [25](ClO 4 ) 2 ) after the addition of NaClO 4 . Single-crystal X-ray analysis revealed that [25] 21 consists of two [Au 2 (dppe)(D-pen-S) 2 ] 22 moieties that span two Co III atoms to form an S-bridged Au I 4 Co III 2 hexanuclear structure in [Au 4 Co 2 (dppe) 2 (D-pen) 4 ] 21 , which is analogous to that in [24] (Figure 13a and Figure 13b).…”

“…[18] The resulting 12-charged product is readily crystallized as a perchlorate salt ( [25](ClO 4 ) 2 ) after the addition of NaClO 4 . Single-crystal X-ray analysis revealed that [25] 21 consists of two [Au 2 (dppe)(D-pen-S) 2 ] 22 moieties that span two Co III atoms to form an S-bridged Au I 4 Co III 2 hexanuclear structure in [Au 4 Co 2 (dppe) 2 (D-pen) 4 ] 21 , which is analogous to that in [24] (Figure 13a and Figure 13b). A twisted Au 4 Co 2 S 4 P 4 C 4 18-membered ring and the R configurational asymmetric bridging S atoms were also observed.…”

Estimating functions for evaluating treatment effects in cluster‐randomized longitudinal studies in the presence of drop‐out and non‐compliance

“…In recent years, gold has been shown to display rich cluster and coordination chemistry 1–10, and gold nanoparticles 11, 12 and nanoelectrodes 13 (containing hundreds of gold atoms) are becoming very important in molecular electronics applications in which molecules are chemically bound to them. Computational approaches to the structural and electronic properties of these systems are typically based either on Hückel (tight binding) theory or on density‐functional calculations.…”