Reactions of Bis(2-pyridyl)amine and Its Deprotonated Anion with Ruthenium and Osmium Carbonyl Complexes
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- 作者：Matti Haukka ; Philippe Da Costa ; and Saija Luukkanen
- 刊名：Organometallics
- 出版年：2003
- 出版时间：November 24, 2003
- 年：2003
- 卷：22
- 期：24
- 页码：5137 - 5140
- 全文大小：103K
- 年卷期：v.22,no.24(November 24, 2003)
- ISSN：1520-6041
文摘
The reactions and coordination geometry ofbis(2-pyridyl)amine (Hdpa) and its deprotonated anion(dpa) can be effectively modified by the reaction conditions. Depending on the solvent system, the reaction ofmultinuclear ruthenium carbonyls such as Ru3(CO)12and [Ru(CO)3Cl2]2 with Hdpa at moderate reactiontemperatures lead to low yields of a monomeric cis(CO),cis(Cl)-Ru(Hdpa)(CO)2Cl2 or a dimeric metal-metal-bonded [Ru(dpa)2(CO)2]2. In organic solvents high temperatures favor the formation of [Ru(dpa)2(CO)2]2 fromclustered Ru3(CO)12 and Hdpa. The high-temperaturereactions in HCl solution can, in turn, be used forselective synthesis of cis(CO),cis(Cl)-Ru(Hdpa)(CO)2Cl2.dpa (deprotonated with CH3Li) readily reacts with[Ru(CO)3Cl2]2, Ru3(CO)12, or H4Ru4(CO)12 in organicsolvents, leading to [Ru(dpa)2(CO)2]2. Under the corresponding conditions Os carbonyls produce a new typeof dpa-bridged dimer compound without a direct metal-metal bond, [Os(dpa)(CO)2(CH3)]2, in addition to theruthenium dimer equivalent [Os(dpa)2(CO)2]2.