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μ-2,3,5,6-Tetra-kis(pyridin-2-yl)pyrazine-bis-[(2,2':6',2''-terpyridine)-ruthenium(II)] tetra-kis-(hexa-fluoridophosphate) acetonitrile tetra-solvate.

Jude H, Scott BL, Rocha RC - Acta Crystallogr Sect E Struct Rep Online (2013)

Bottom Line: At the peripheral tpy ligands, the average Ru-N bond distance is 2.072 (4) Å for the outer N atoms trans to each other (N(outer)) and 1.984 (1) Å for the central N atoms (N(central)).The dihedral angle between the two tpy planes is 27.11 (6)°.The intra-molecular linear distance between the two Ru atoms is 6.6102 (7) Å.

View Article: PubMed Central - HTML - PubMed

Affiliation: Los Alamos National Laboratory, MPA Division, Los Alamos, NM 87545, USA.

ABSTRACT
In the title compound [Ru(2)(C(15)H(11)N(3))(2)(C(24)H(16)N(6))](PF(6))(4)·4CH(3)CN, two of the counter-ions and one of the solvent mol-ecules are disordered with occupancies for the major components between 0.57 (2) and 0.64 (1). The structure of the dinuclear tetracation exhibits significant distortion from planarity in the bridging 2,3,5,6-tetra-kis-(pyridin-2-yl)pyrazine (tppz) ligand, which has a saddle-like geometry with an average dihedral angle of 42.96 (18)° between adjacent pyridine rings. The metal-ligand coordination environment is nearly equivalent for the two Ru(II) atoms, which have a distorted octa-hedral geometry due to the restricted bite angle [157.57 (13)-159.28 (12)°] of their two mer-arranged tridendate ligands [2,2':6',2''-terpyridine (tpy) and tppz] orthogonal to each other. At the peripheral tpy ligands, the average Ru-N bond distance is 2.072 (4) Å for the outer N atoms trans to each other (N(outer)) and 1.984 (1) Å for the central N atoms (N(central)). At the bridging tppz ligand, the average metal-ligand distances are significantly shorter [2.058 (4) Å for Ru-N(outer) and 1.965 (1) Å for Ru-N(central)] as a result of both the geometric constraints and the stronger π-acceptor ability of the pyrazine-centered bridge. The dihedral angle between the two tpy planes is 27.11 (6)°. The intra-molecular linear distance between the two Ru atoms is 6.6102 (7) Å.

No MeSH data available.


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Single-crystal structure of [(tpy)Ru(tppz)Ru(tpy)](PF6)4×4MeCN, with all counterions and solvent molecules included. Also shown is the observed disorder in two of the PF6- anions (P2,F7–F12 and P4,F19–F24) and one of the MeCN solvent molecules (N13,C55,C56). Displacement ellipsoids are drawn at th e 50% probability level. H atoms are omitted for clarity.
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Fap2: Single-crystal structure of [(tpy)Ru(tppz)Ru(tpy)](PF6)4×4MeCN, with all counterions and solvent molecules included. Also shown is the observed disorder in two of the PF6- anions (P2,F7–F12 and P4,F19–F24) and one of the MeCN solvent molecules (N13,C55,C56). Displacement ellipsoids are drawn at th e 50% probability level. H atoms are omitted for clarity.


μ-2,3,5,6-Tetra-kis(pyridin-2-yl)pyrazine-bis-[(2,2':6',2''-terpyridine)-ruthenium(II)] tetra-kis-(hexa-fluoridophosphate) acetonitrile tetra-solvate.

Jude H, Scott BL, Rocha RC - Acta Crystallogr Sect E Struct Rep Online (2013)

Single-crystal structure of [(tpy)Ru(tppz)Ru(tpy)](PF6)4×4MeCN, with all counterions and solvent molecules included. Also shown is the observed disorder in two of the PF6- anions (P2,F7–F12 and P4,F19–F24) and one of the MeCN solvent molecules (N13,C55,C56). Displacement ellipsoids are drawn at th e 50% probability level. H atoms are omitted for clarity.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3569182&req=5

Fap2: Single-crystal structure of [(tpy)Ru(tppz)Ru(tpy)](PF6)4×4MeCN, with all counterions and solvent molecules included. Also shown is the observed disorder in two of the PF6- anions (P2,F7–F12 and P4,F19–F24) and one of the MeCN solvent molecules (N13,C55,C56). Displacement ellipsoids are drawn at th e 50% probability level. H atoms are omitted for clarity.
Bottom Line: At the peripheral tpy ligands, the average Ru-N bond distance is 2.072 (4) Å for the outer N atoms trans to each other (N(outer)) and 1.984 (1) Å for the central N atoms (N(central)).The dihedral angle between the two tpy planes is 27.11 (6)°.The intra-molecular linear distance between the two Ru atoms is 6.6102 (7) Å.

View Article: PubMed Central - HTML - PubMed

Affiliation: Los Alamos National Laboratory, MPA Division, Los Alamos, NM 87545, USA.

ABSTRACT
In the title compound [Ru(2)(C(15)H(11)N(3))(2)(C(24)H(16)N(6))](PF(6))(4)·4CH(3)CN, two of the counter-ions and one of the solvent mol-ecules are disordered with occupancies for the major components between 0.57 (2) and 0.64 (1). The structure of the dinuclear tetracation exhibits significant distortion from planarity in the bridging 2,3,5,6-tetra-kis-(pyridin-2-yl)pyrazine (tppz) ligand, which has a saddle-like geometry with an average dihedral angle of 42.96 (18)° between adjacent pyridine rings. The metal-ligand coordination environment is nearly equivalent for the two Ru(II) atoms, which have a distorted octa-hedral geometry due to the restricted bite angle [157.57 (13)-159.28 (12)°] of their two mer-arranged tridendate ligands [2,2':6',2''-terpyridine (tpy) and tppz] orthogonal to each other. At the peripheral tpy ligands, the average Ru-N bond distance is 2.072 (4) Å for the outer N atoms trans to each other (N(outer)) and 1.984 (1) Å for the central N atoms (N(central)). At the bridging tppz ligand, the average metal-ligand distances are significantly shorter [2.058 (4) Å for Ru-N(outer) and 1.965 (1) Å for Ru-N(central)] as a result of both the geometric constraints and the stronger π-acceptor ability of the pyrazine-centered bridge. The dihedral angle between the two tpy planes is 27.11 (6)°. The intra-molecular linear distance between the two Ru atoms is 6.6102 (7) Å.

No MeSH data available.


Related in: MedlinePlus