0000000001312342
AUTHOR
Yu Pei
An Na8 Cluster in the Structure of a Novel oxamato-bridged Na'Cu'' three-Dimensional Coordination Polymer
[EN] The new heterometallic sodium(I)¿copper(II) compound Na4Cu2 (2) · 10.5 H2O (3), where H8[2] stands for N,N',N'',N'''-methanetetrayltetrakismethylenetetrakis(oxamic acid), has been synthesized and its crystal structure determined by single-crystal X-ray diffraction. The structure of 3 consists of cationic [Cu2(¿4:¿4-2)]4- dinuclear units, coordinated sodium cations, and water molecules. In the crystal, the dinuclear copper entities are joined through discrete aggregates of eight sodium atoms linked by oxamato and water bridges, leading to a three-dimensional polymeric network.
A Square-Planar Dinickel(II) Complex with a Noninnocent Dinucleating Oxamate Ligand: Evidence for a Ligand Radical Species
[EN] The new bimetallic nickel(II) compound (PPh4)4[Ni2(2)]·6H2O (3), where H8[2] stands for N,N',N'',N'''-1,2,4,5-benzene-tetrayltetrakis(oxamic acid), has been synthesized and its crystal structure determined by single-crystal X-ray diffraction. The structure of 3 consists of [Ni2(n4:n4-2)]4- anions, tetraphenylphosphonium cations, and water molecules. Facile one-electron oxidation of the square-planar diamagnetic dinickel(II) complex [Ni2(n4:n4-2)]4- generates the metallo-radical species [Ni2(n4:n4-2·+)]3- with characteristic intra-ligand ¿cation radical transitions in the visible region (475-550 nm) as well as a typical quasi-isotropic EPR signal at g ¿ 2.0.
CCDC 102916: Experimental Crystal Structure Determination
Related Article: A.Aukauloo, X.Ottenwarlder, R.Ruis, S.Poussereau, Yu Pei, Y.Journaux, P.Fleurat, F.Volatron, B.Cervera, M.C.Munoz|1999|Eur.J.Inorg.Chem.||1067|doi:10.1002/(SICI)1099-0682(199907)1999:7<1067::AID-EJIC1067>3.0.CO;2-7
CCDC 101560: Experimental Crystal Structure Determination
Related Article: A.Aukauloo, X.Ottenwaelder, R.Ruiz, Y.Journaux, Yu Pei, E.Riviere, M.C.Munoz|1999|Eur.J.Inorg.Chem.||209|doi:10.1002/(SICI)1099-0682(19990202)1999:2<209::AID-EJIC209>3.0.CO;2-J