The solid-state structure of the first reported homoleptic copper di-2-pyridylphosphinate complex shows an extremely large 'z-out' tetragonal distortion, with an axial Cu...O distance of 2.430 (2) Angstrom. The title complex, [Cu(C10H8N2O2P) 2].2CH(2)Cl(2) or Cu[py(2)P(O)O](2).2CH(2)Cl(2), comprises two di-2-pyridylphosphinate ligands coordinated to the central copper(II) ion, which sits on an inversion center. The pyridyl rings of one ligand are trans to the pyridyl rings of their symmetry-related counterpart. The two trans py-Cu-py moieties are coplanar, as required by the inversion symmetry. A disordered dichloromethane solvent molecule is cocrystallized in the asymmetric unit cell.
Coordination of bis(2-pyridyl)phosphinic acid as a tridentate ligand. Crystal structure of the {bis(2-pyridyl)phosphinato}{tris(2-pyridyl)-phosphine oxide}ruthenium(II) cation, [Ru{py2P(O)O}{py3PO}]BF4·2H2O
作者:F. Richard Keene、Philip J. Stephenson、Edward R.T. Tiekink
DOI:10.1016/s0020-1693(00)90397-9
日期:1991.9
the bistris(2-pyridyl)phosphineoxide}ruthenium(II) cation, [Ru(py 3 PO) 2 ] 2+ , the species bis(2-pyridyl)phosphinato}tris(2-pyridyl)phosphineoxide}ruthenium(II), [Rupy 3 PO}- py 2 P(O)O}]4 + , was also isolated. The latter cation has been characterized by a structural determination and is the first example of a tridentate phosphinate anion. The electrochemical and spectral properties of both
new class of bidentate, aza-based phosphinic amide ligands of the type RN(H)P(O)(2-py)2 (2-py = 2-pyridyl) was synthesized within minutes via a one-pot process including Staudinger reaction of an organic azide (RN3) with 2-pyridylphosphines, followed by partial, unprecedented hydrolysis under loss of one aromatic substituent. The structure of the unusual-hydrolysis product H2CCH(CH2)9N(H)P(O)(2-py)2 (5a)
The solid-state structure of the first reported homoleptic copper di-2-pyridylphosphinate complex shows an extremely large 'z-out' tetragonal distortion, with an axial Cu...O distance of 2.430 (2) Angstrom. The title complex, [Cu(C10H8N2O2P) 2].2CH(2)Cl(2) or Cu[py(2)P(O)O](2).2CH(2)Cl(2), comprises two di-2-pyridylphosphinate ligands coordinated to the central copper(II) ion, which sits on an inversion center. The pyridyl rings of one ligand are trans to the pyridyl rings of their symmetry-related counterpart. The two trans py-Cu-py moieties are coplanar, as required by the inversion symmetry. A disordered dichloromethane solvent molecule is cocrystallized in the asymmetric unit cell.