Abstract
The title complex, [RuCl(C10H14)(C10H8N2)](C24H20B), has monoclinic (P21) symmetry at 100 K. It was prepared by the reaction of the dichlorido[1-methyl-4-(propan-2-yl)benzene]ruthenium(II) dimer with 2,2′-bipyridine, followed by the addition of ammonium tetraphenylborate. The 1-methyl-4-(propan-2-yl)benzene group, the 2,2′-bipyridine unit and a chloride ion coordinate the ruthenium(II) atom, with the 1-methyl-4-(propan-2-yl)benzene ring and bipyridine moieties trans to each other. In the crystal, the complex cations are linked by C—H...Cl hydrogen bonds, forming chains parallel to [010]. These chains are linked by a number of C—H...π interactions, involving the phenyl rings of the tetraphenylborate anion and a pyridine ring of the bpy ligand, resulting in the formation of layers parallel to (10\overline{1}).
Highlights
The title complex, [RuCl(C10H14)(C10H8N2)](C24H20B), has monoclinic (P21) symmetry at 100 K
The complex cations are linked by C—HÁ Á ÁCl hydrogen bonds, forming chains parallel to [010]
These chains are linked by a number of C—HÁ Á Á interactions, involving the phenyl rings of the tetraphenylborate anion and a pyridine ring of the bpy ligand, resulting in the formation of layers parallel to (101)
Summary
N-Heterocyclic carbenes (NHCs) of ruthenium have been of significant interest to the organometallic community for many years, and have a number of applications in homogeneous chemical catalysis (Weskamp et al, 1999; Furstner et al, 2001; Son et al, 2004; Tudose et al, 2006; Gandolfi et al, 2009); Sanz et al, 2010; Fogler et al, 2011; Hackenberg et al, 2013). Complex 1 is comprised of an RuII metal atom coordinated by an 6 1-methyl-4(propan-2-yl)benzene (p-cymene) ring, a chloride ion and the bidentate ligand 2,20bipyridine, with a tetraphenylborate anion as counter ion (Fig. 1). The 1-methyl-4(propan-2-yl)benzene ring and bipyridine moieties are trans to each other. The complex cations are linked by bifurcated C—(H,H)Á Á ÁCl hydrogen bonds, forming chains propagating parallel to [010]; see Fig. 2 and Table 2. The chains are linked by a number of C—HÁ Á Á interactions involving the phenyl rings of the tetraphenylborate anion and a pyridine ring of the bpy ligand, resulting in the formation of layers lying parallel to the (101) plane; see Fig. 2 and Table 2. Symmetry codes: (i) Àx; y À 12; Àz; (ii) Àx þ 1; y À 12; Àz þ 1; (iii) x; y À 1; z; (iv) Àx þ 1; y þ 12; Àz þ 1
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