Reversed field pinch(RFP)and ultralow safety factor plasma experimental performances with pulsed discharge cleaning and siliconization on SWIP-RFP device are presented.The xvall siliconization ivas performed by using ...Reversed field pinch(RFP)and ultralow safety factor plasma experimental performances with pulsed discharge cleaning and siliconization on SWIP-RFP device are presented.The xvall siliconization ivas performed by using the device discharges.The experimental results with siliconization in RFP devices showed that the impurity concentrations were decreased in the plasma and better plasma parameters were obtained in the device.展开更多
The complex [Et4N][(Ph3P)2{CuS2WS2Fe} Br2] (1 ), C44, H50NBr2CuFeP2S4W, M4= 1246. 13, has been obtained by reaction of [Et4N]2[WS4] andFeBr2 with Cu (Ph3P )3I in MeCN/CH2Cl2. Crystal data for [Et4N][(Ph3P)2{CuS2WS2Fe)...The complex [Et4N][(Ph3P)2{CuS2WS2Fe} Br2] (1 ), C44, H50NBr2CuFeP2S4W, M4= 1246. 13, has been obtained by reaction of [Et4N]2[WS4] andFeBr2 with Cu (Ph3P )3I in MeCN/CH2Cl2. Crystal data for [Et4N][(Ph3P)2{CuS2WS2Fe) Br2] (1): triclinic, P1, Z = 2, a= 13. 495 (7), b = 15. 322 (5), c =12. 361 (4), a=105. 32(3), β=93. 19(4), γ=101. 35(4) and V=2401. 2 The bond lengths of W-Fe bond and the W-Cu distance are 2. 793(2) A and 2. 823(2), respectively. Three kind metal atoms of the title structure [Et4N][(Ph3P)2{CuS2WS2Fe}Br2] (1) are nearly distributed along a line, and along which three metalatoms (W, Cu, Fe) are approximately tetrahedral coordination.展开更多
The title compound {Mo3 (μ3,-S) (μ-S)3 [μ-SOP (OEt )2] [S2P (OEt)2]3(CH3CN) }. CH3CN, C20H46,Mo3N2O9P4S11, Mr= 1222. 9, has been synthesized bythe reaction of [Mo3 (μ3,-S) (μ-S)3]4+ with Hdtp (hydrogen diethyldit...The title compound {Mo3 (μ3,-S) (μ-S)3 [μ-SOP (OEt )2] [S2P (OEt)2]3(CH3CN) }. CH3CN, C20H46,Mo3N2O9P4S11, Mr= 1222. 9, has been synthesized bythe reaction of [Mo3 (μ3,-S) (μ-S)3]4+ with Hdtp (hydrogen diethyldithiophosphate)and its structures was dctermined by X-ray crystallography. The crystal data for the title compound: triclinic, P1, Z= 2, a= 13. 011 (8), b= 13. 411 (9), c= 14. 385 (5)A, a=76. 59(5), B=78. 09(5), Y=82. 20(3), V= 2382(2) A3, Dc= 1.705 g/cm3, μ (MoKa) = 1. 434 mm-1, F (000) = 1228. The structure was refined to R =0.080 for 5485 observed reflections. Quasi-aromaticity in the puckered-ring of Mo3S3was experimentally probed by 31p NMR spectroscopic measurements. The 31p chemicalshifts of ligand DTP’s (diethyldithiophosphate) were modulated by the substituent effect of the adjacent bridging aromatic carboxylate through the long-distance super-conjugation via the trinuclear Mo cluster core.展开更多
Ligand-protected metal nanoclusters have drawn increasing research interest because of their unique physicochemical properties and practical applications.Great efforts have been made in pursuing rational synthesis of ...Ligand-protected metal nanoclusters have drawn increasing research interest because of their unique physicochemical properties and practical applications.Great efforts have been made in pursuing rational synthesis of metal nanoclusters and establishing the structure-property relationships.As an indispensable part of ligand-protected metal nanoclusters,ligands play multiple roles in determining their structures and properties.In this perspective,we demonstrate the importance of ligand engineering in terms of the control of structures,optical and catalytic properties of metal nanoclusters.Furthermore,we will show that ligand engineering is prospective in structural design and preorganization of surface metal sites.展开更多
基金Supported by the National Natural Science Foundation of Chinathe Nuclear Science Foundation of China。
文摘Reversed field pinch(RFP)and ultralow safety factor plasma experimental performances with pulsed discharge cleaning and siliconization on SWIP-RFP device are presented.The xvall siliconization ivas performed by using the device discharges.The experimental results with siliconization in RFP devices showed that the impurity concentrations were decreased in the plasma and better plasma parameters were obtained in the device.
文摘The complex [Et4N][(Ph3P)2{CuS2WS2Fe} Br2] (1 ), C44, H50NBr2CuFeP2S4W, M4= 1246. 13, has been obtained by reaction of [Et4N]2[WS4] andFeBr2 with Cu (Ph3P )3I in MeCN/CH2Cl2. Crystal data for [Et4N][(Ph3P)2{CuS2WS2Fe) Br2] (1): triclinic, P1, Z = 2, a= 13. 495 (7), b = 15. 322 (5), c =12. 361 (4), a=105. 32(3), β=93. 19(4), γ=101. 35(4) and V=2401. 2 The bond lengths of W-Fe bond and the W-Cu distance are 2. 793(2) A and 2. 823(2), respectively. Three kind metal atoms of the title structure [Et4N][(Ph3P)2{CuS2WS2Fe}Br2] (1) are nearly distributed along a line, and along which three metalatoms (W, Cu, Fe) are approximately tetrahedral coordination.
文摘The title compound {Mo3 (μ3,-S) (μ-S)3 [μ-SOP (OEt )2] [S2P (OEt)2]3(CH3CN) }. CH3CN, C20H46,Mo3N2O9P4S11, Mr= 1222. 9, has been synthesized bythe reaction of [Mo3 (μ3,-S) (μ-S)3]4+ with Hdtp (hydrogen diethyldithiophosphate)and its structures was dctermined by X-ray crystallography. The crystal data for the title compound: triclinic, P1, Z= 2, a= 13. 011 (8), b= 13. 411 (9), c= 14. 385 (5)A, a=76. 59(5), B=78. 09(5), Y=82. 20(3), V= 2382(2) A3, Dc= 1.705 g/cm3, μ (MoKa) = 1. 434 mm-1, F (000) = 1228. The structure was refined to R =0.080 for 5485 observed reflections. Quasi-aromaticity in the puckered-ring of Mo3S3was experimentally probed by 31p NMR spectroscopic measurements. The 31p chemicalshifts of ligand DTP’s (diethyldithiophosphate) were modulated by the substituent effect of the adjacent bridging aromatic carboxylate through the long-distance super-conjugation via the trinuclear Mo cluster core.
基金Supported by the National Natural Science Foundation of China(91961201,21631007 and 21971136)。
文摘Ligand-protected metal nanoclusters have drawn increasing research interest because of their unique physicochemical properties and practical applications.Great efforts have been made in pursuing rational synthesis of metal nanoclusters and establishing the structure-property relationships.As an indispensable part of ligand-protected metal nanoclusters,ligands play multiple roles in determining their structures and properties.In this perspective,we demonstrate the importance of ligand engineering in terms of the control of structures,optical and catalytic properties of metal nanoclusters.Furthermore,we will show that ligand engineering is prospective in structural design and preorganization of surface metal sites.
