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Issue 24, 1997
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Crystal and molecular structure of [{Cu(pmdien)F(H2O)}2][BF4]2 (pmdien = N,N,N′,N″,N″-pentamethyldiethylenetriamine): a novel dimeric cation with extremely short O–H · · · F interactions

Stephen J. Barlow,  Stuart J. Hill,  Julia E. Hocking,  Peter Hubberstey  and  Wan-Sheung Li 

Abstract

The crystal and molecular structure of [{Cu(pmdien)F(H2O)}2][BF4]21 (pmdien = N,N,N′,N″,N″-pentamethyldiethylenetriamine) has been determined. The cation exists in the solid state as a unique dimer, held together by O–H · · · F hydrogen-bonding interactions [O · · · F 2.567(2), O–H 0.83(3), F · · · H 1.74(3) Å, F · · · H–O 178.5(23) °]. The O · · · F separation is the shortest ligand fluoride–ligand water hydrogen-bonding interaction in any copper(II) complex. The copper atom is five-co-ordinate and has a square-based pyramidal geometry comprising equatorially located pmdien (mean Cu–N 2.052 Å), and fluoride [Cu–F 1.888(1) Å] and axially located water [Cu–O 2.211(1) Å].

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Article type: Paper
DOI: 10.1039/A706103J
Citation: J. Chem. Soc., Dalton Trans., 1997,0, 4701-4704
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    Crystal and molecular structure of [{Cu(pmdien)F(H2O)}2][BF4]2 (pmdien = N,N,N′,N″,N″-pentamethyldiethylenetriamine): a novel dimeric cation with extremely short O–H · · · F interactions

    S. J. Barlow, S. J. Hill, J. E. Hocking, P. Hubberstey and W. Li, J. Chem. Soc., Dalton Trans., 1997, 0, 4701
    DOI: 10.1039/A706103J

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