Small molecule binding and activation on a cationic ruthenium center of a pincer complex

Ramaraj, A and Jagirdar, Balaji R and Nethaji, Munirathinam (2016) Small molecule binding and activation on a cationic ruthenium center of a pincer complex. In: JOURNAL OF ORGANOMETALLIC CHEMISTRY, 825 . pp. 114-124.

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Abstract

Ruthenium pincer complex RuHCl(PPh3)(PNP)] (PNP = Me-N(CH2CH2PPh2)(2)) (1) was synthesized by reaction of RuHCl(PPh3)(3) with Me-N(CH2CH2PPh2)(2) and characterized. Abstraction of chloride ligand in complex 1 using NaBA(4)(f) in the presence of small molecules such as N-2, H-2, O-2, and CO resulted in the formation of trans-RuH(L)(PPh3)(PNP)]BAr4f {L = N-2 (2), H-2 (4), O-2 (5), CO (6)} complexes. Complexes 2, 4, 5, and 6 have been characterized by various techniques. The reaction of RuHCl(PPh3)(PNP)] complex with NaBH4 gave a borohydrido complex RuH(eta(1)-BH4)(PPh3)(PNP)] (7) which upon reaction with NEt3 generates a mixture of cis and trans dihydrides RuH2(PPh3)(PNP)] (8). The reaction of dihydride complexes with CO2 leads to the formation of formate complex RuH(eta(1)-HCO2)(PPh3)(PNP)] (9). In addition, dihydrogen complexes Ru(eta(2)-H-2)(L)(PPh3)(PNP)](n+) (L = Cl (10), CO (11)) having different trans donor ligands were synthesized by protonation of trans-RuH(L)(PPh3)(PNP)](n+) {n = 0, L = CI; n = 1, L = CO} complexes with HOTf at low temperature. Complexes I and 6 have been characterized by X-ray crystallography. (C) 2016 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF ORGANOMETALLIC CHEMISTRY
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	04 Jan 2017 04:43
Last Modified:	04 Jan 2017 04:43
URI:	http://eprints.iisc.ac.in/id/eprint/55700

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