title: [Re(III)Cl(3)] core complexes with bifunctional single amino acid chelates.
abstract: The reactions of the Re(V) starting material [ReO(PPh(3))(2)Cl(3)] with ligands of the type XN(Y)Z [X = Y = 2-pyridylmethyl, Z = -CH(2)CO(2)Et (L(1)Et), -CH(2)CH(2)CO(2)Et (L(2)Et), -CH(2)CH(2)CH(2)CH(2)CH(NHCO(2)Bu(t))CO(2)H (L(3)H); X = 2-pyridylmethyl, Y = 2-(1-methylimidazolyl)methyl, Z = -CH(2)CO(2)Et (L(4)Et)] yielded the Re(III) trichloride complexes of the type [ReCl(3)(L(n)R)]. The complexes are mononuclear, paramagnetic species with a facial geometry of the chloride ligands. The nitrogen donors of the tridentate L(n)()R ligands complete the distorted octahedral coordination spheres of the complexes. Crystal data: [ReCl(3)(L(1)Et)] (1), monoclinic, C2/m, a = 16.088(3) A, b = 9.980(2) A, c = 12.829(2) A, beta = 91.384(3) degrees, Z = 4, D(calc) = 1.967 g/cm(-)(3); [ReCl(3)(L(4)Et)] (4), monoclinic, C2/c, a = 22.880(1) A, b = 7.4926(4) A, c = 22.560(1) A, beta = 94.186(1) degrees, Z = 8, D(calc) = 2.001 g/cm(-3).
authors.affiliation: Department of Chemistry, Syracuse University, Syracuse, NY 13244, USA.
authors.forename: Sangeeta Ray
authors.initials: SR
authors.lastname: Banerjee
authors.forename: Lihui
authors.initials: L
authors.lastname: Wei
authors.forename: Murali K
authors.initials: MK
authors.lastname: Levadala
authors.forename: Neva
authors.initials: N
authors.lastname: Lazarova
authors.forename: Vladimir O
authors.initials: VO
authors.lastname: Golub
authors.forename: Charles J
authors.initials: CJ
authors.lastname: O'Connor
authors.forename: Karin A
authors.initials: KA
authors.lastname: Stephenson
authors.forename: John F
authors.initials: JF
authors.lastname: Valliant
authors.forename: John W
authors.initials: JW
authors.lastname: Babich
authors.forename: Jon
authors.initials: J
authors.lastname: Zubieta
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D002614:Chelating Agents / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004563:Electrochemistry; D007202:Indicators and Reagents; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008968:Molecular Conformation; D019275:Radiopharmaceuticals / Q000138:chemical synthesis / Q000737:chemistry; D012211:Rhenium / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000596:Amino Acids; D002614:Chelating Agents; D007202:Indicators and Reagents; D008024:Ligands; D019275:Radiopharmaceuticals; D012211:Rhenium