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Abstract
The title compound, [RuCl2(C10H14)(C26H35O2P)] (I), crystallizes in the monoclinic space group P21/c with two crystallographically independent mol-ecules (A and B) in the asymmetric unit. The geometries of both mol-ecules are very similar and distinguished only by the twist angles of the two benzene rings in the phosphine substituents [89.54 (14) and 78.36 (14)° for mol-ecules A and B, respectively]. The Ru atoms have classical pseudo-tetra-hedral piano-stool coordination environments. The conformation of each mol-ecule is stabilized by intra-molecular C-H⋯O and C-H⋯Cl hydrogen bonds and C-H⋯π inter-actions. The two mol-ecules are linked by a C-H⋯Cl hydrogen bond. In the crystal, the mol-ecules are further linked by C-H⋯ π inter-actions, forming -A-B-A-B- chains propagating along the a-axis direction. Complex I is an active catalyst for reductive amination reaction. The catalytic activity of this complex can be explained by the lability of the p-cymene ligand, which can be replaced by two-electron ligands such as CO or amine.
Highlights
The conformation of each molecule is stabilized by intramolecular C—HÁ Á ÁO and C—HÁ Á ÁCl hydrogen bonds and C—HÁ Á Á interactions
The two molecules are linked by a C—HÁ Á ÁCl hydrogen bond
The molecules are further linked by C—HÁ Á Á interactions, forming –A–B–A–B– chains propagating along the a-axis direction
Summary
The design of new organometallic complexes is important for the development of new catalytic processes as well as for understanding those already known. Symmetry codes: (i) x À 1; y; z; (ii) x þ 1; y; z Such 6-arene RuII complexes with piano-stool coordination are known to be active catalysts in different processes (Therrien, 2009), including hydrogenation (Moldes et al, 1998), hydroboration (Kaithal et al, 2016), transfer hydrogenation (Aznar et al, 2013; Ceron-Camacho et al, 2006; Clavero et al, 2016) and isomerization of allylic alcohols (Dıaz-Alvarez et al, 2006; Baraut et al, 2015). Such complexes have shown promising medicinal properties (Nazarov et al, 2014), including anticancer activity (Chuklin et al, 2017)
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Schedule a callMore From: Acta crystallographica. Section E, Crystallographic communications
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