Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/27679
Title: Eta5-pentamethylcyclopentadienyl ruthenium complexes containing sulfur ligands
Authors: TAY PHUAY LENG, ELAINE
Keywords: pentamethylcyclopentadienyl, ruthenium, dithiocarbamate, xanthate
Issue Date: 4-Oct-2004
Source: TAY PHUAY LENG, ELAINE (2004-10-04). Eta5-pentamethylcyclopentadienyl ruthenium complexes containing sulfur ligands. ScholarBank@NUS Repository.
Abstract: The ambient temperature reactions of [Cp*RuCl2]2 towards organic substrates, (i) [Me2NC(S)S]2 and (ii) [Et2NC(S)S]2, isopropylxanthic disulfide (iii) [iPrOC(S)S]2 and bis(thiophosphoryl)disulfide (iv) [(iPrO)2P(S)S]2 produced air-stable Cp*Ru(S2CNR2)Cl2 (R = Me, 2.1; R = Et, 2.2), Cp*Ru(S2COiPr)Cl2 (2.3) and air-sensitive Cp*Ru(S2P(OiPr)2)Cl2 (2.4), respectively. The reactions of 2.1, 2.2 and 2.3 with Na(S)SCNEt2 gave Cp*Ru(S2CNMe2)(S2CNEt2)]Cl (2.5), [Cp*Ru(S2CNEt2)2]Cl (2.6), Cp*Ru(S2CNEt2)(S2CO) (2.8), respectively, and with K(S)SCOiPr gave Cp*Ru(S2CNMe2)(S2CO) (2.7), Cp*Ru(S2CNEt2)(S2CO) (2.8) and Cp*Ru(S2COiPr)(S2CO) (2.9), respectively. The reactivity of 2.1 towards phosphines (PPh3, PPhMe2 and PMe3) gave [Cp*Ru(S2CNMe2)(PPh3)Cl]Cl (2.10), Cp*Ru(S2CNMe2)(PPhMe2)Cl][PF6] (2.11) and [Cp*Ru(S2CNMe2)(PMe3)Cl][BPh4] (2.12). However, 2.3 reacted with PPh3 to give a different product Cp*Ru(S2COiPr)(PPh3) (2.13). Complex 2.1 underwent ligand exchange with the CpCr(CO)3. radical to yield Cp*Ru(S2CNMe2)(CO) (2.14) and CpCrCl2(CH3CN) and it formed [Cp*Ru(S2CNMe2)(SCH2CH2S)] (2.15) with the sodium salt of ethane-1,2-dithiolate. Complex 2.15 was reacted with groups 10 and 11 metal fragments Ni(PPh3)2Cl2, Pt(PPh3)2Cl2 and Au(PPh3)Cl to yield {Cp*Ru(S2CNMe2)(SCH2CH2S)]2Ni}(PF6)2 (2.16), [Cp*Ru(S2CNMe2)(S(CH2)2S) Pt(PPh3)2](PF6)2 (2.17) and [Cp*Ru(S2CNMe2)(SCH2CH2S)Au(PPh3)Cl] (2.18), respectively. The formal oxidation state of ruthenium in all of the products was IV except for 2.13 and 2.14.
URI: http://scholarbank.nus.edu.sg/handle/10635/27679
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Elaine Tay MSc Thesis.pdf1.01 MBAdobe PDF

OPEN

NoneView/Download
Appendix II.pdf265.84 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

152
checked on Dec 11, 2017

Download(s)

422
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.