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Crystal structure of a mononuclear RuII complex with a back-to-back terpyridine ligand: [RuCl(bpy)(tpy–tpy)]+

Journal Article · · Acta Crystallographica. Section E, Crystallographic Communications
 [1];  [2];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); DOE/OSTI
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
+ Show Author Affiliations
We report the structural characterization of [6',6''-bis(pyridin-2-yl)-2,2':4',4'':2'',2''-quaterpyridine](2,2'-bipyridine)chloridoruthenium(II) hexafluoridophosphate, [RuCl(C10H8N2)(C30H20N6)]PF6, which contains the bidentate ligand 2,2'-bipyridine (bpy) and the tridendate ligand 6',6''-bis(pyridin-2-yl)-2,2':4',4'':2'',2'''-quaterpyridine (tpy–tpy). The [RuCl(bpy)(tpy–tpy)]+ monocation has a distorted octahedral geometry at the central RuII ion due to the restricted bite angle [159.32 (16)°] of the tridendate ligand. The Ru-bound tpy and bpy moieties are nearly planar and essentially perpendicular to each other with a dihedral angle of 89.78 (11)° between the least-squares planes. The lengths of the two Ru—N bonds for bpy are 2.028 (4) and 2.075 (4) Å, with the shorter bond being opposite to Ru—Cl. For tpy–tpy, the mean Ru—N distance involving the outer N atomstransto each other is 2.053 (8) Å, whereas the length of the much shorter bond involving the central N atom is 1.936 (4) Å. The Ru—Cl distance is 2.3982 (16) Å. The free uncoordinated moiety of tpy–tpy adopts a trans,trans conformation about the interannular C—C bonds, with adjacent pyridyl rings being only approximately coplanar. The crystal packing shows significant π–π stacking interactions based on tpy–tpy. The crystal structure reported here is the first for a tpy–tpy complex of ruthenium.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1629254
Journal Information:
Acta Crystallographica. Section E, Crystallographic Communications, Journal Name: Acta Crystallographica. Section E, Crystallographic Communications Journal Issue: 9 Vol. 71; ISSN 2056-9890
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

Effects of the Bidentate Ligand on the Photophysical Properties, Cellular Uptake, and (Photo)cytotoxicity of Glycoconjugates Based on the [Ru(tpy)(NN)(L)] 2+ Scaffold journal January 2018

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
crystal structure
ruthenium catalysts
terpyridine
π–π stacking