Catherine P. Raptopoulou

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As part of our interest into the bioinorganic chemistry of gallium, gallium(III) complexes of the azole ligands 2,1,3-benzothiadiazole (btd), 1,2,3-benzotriazole (btaH), and 1-methyl-4,5-diphenylimidazole (L) have been isolated. Reaction of btaH or btd with GaBr(3) or GaCl(3) resulted in the mononuclear complexes [GaBr(3)(btaH)(2)] (1) and [GaCl(3)(btd)(2)](More)
The combined use of di-2-pyridyl ketone, (py) 2 CO, and acetates (MeCO 2 ´) in nickel(II) chemistry in H 2 O-MeCN under basic conditions (Et 3 N) afforded the coordination cluster [Ni 11 (OH) 6 (O 2 CMe) 12 {(py) 2 C(OH)(O)} 4 (H 2 O) 2 ] (1) in 80% yield, where (py) 2 C(OH)(O) ´ is the monoanion of the gem-diol form of (py) 2 CO. The complex contains a(More)
In the title compound, [Re(C10H6NO2)(CO)3{As(C6H5)3}], the coordination environment of Re(I) is that of a distorted octa-hedron. Three coordination sites are occupied by three carbonyl groups in a facial arrangement and the remaining three sites by tri-phenyl-arsane and deprotonated quinaldic acid in As-mono- and N,O-bidentate fashions, respectively. In the(More)
The reactions of methyl(2-pyridyl)ketone oxime, (py)C(Me)NOH, with manganese(II) sulfate monohydrate have been investigated. The reaction between equimolar quantities of MnSO(4) . H(2)O and (py)C(Me)NOH in H(2)O lead to the dinuclear complex [Mn(2)(SO(4))(2){(py)C(Me)NOH}(4)] . (py)C(Me)NOH, 1 . (py)C(Me)NOH, while employment of NaOMe as base affords the(More)
N,N'-diethylurea (DEU) was employed as a ligand to form the octahedral complexes [M(DEU)(6)](2+) (M=Co, Ni and Zn). Compounds [Co(DEU)(6)](BF(4))(2) (1), [Co(DEU)(6)](CIO(4))(2) (2), [Ni(DEU)(6)](CIO(4))(2) (3), and [Zn(DMU)(6)](CIO(4))(2) (4) have been prepared from the reactions of DEU and the appropriate hydrated metal(II) salts in EtOH in the presence(More)
The synthesis of new trans A(2)B(2)-substituted porphyrins bearing oxygenic substituent (methoxy, acetoxy, hydroxy) at the periphery of the ring are described. All of the synthesized products were characterized by (1)H-N.M.R., (13)C-N.M.R., and H.R.M.S. Electrochemical studies revealed two one-electron oxidations and two reductions. In addition, the X-ray(More)
The employment of 3-pyridine aldoxime, (3-py)CHNOH, in Zn(II) chemistry has afforded two novel compounds: [Zn(acac)(2){(3-py)CHNOH}]·H(2)O (1·H(2)O) [where acac(-) is the pentane-2,4-dionato(-1) ion] and [Zn(2)(O(2)CMe)(4){(3-py)CHNOH}(2)] (2). Complex 1·H(2)O crystallizes in the monoclinic space group P2(1)/n. The Zn(II) ion is five-coordinated, surrounded(More)
The reaction of N, N-bis(2-hydroxyethyl)glycine (bicine; bicH(3)) with Cd(O(2)CPh)(2) · 2H(2)O in MeOH yielded the polymeric compound [Cd(2)(O(2)CPh)(2)(bicH(2))(2)](n)(1). The complex crystallizes in the tetragonal space group P4(1)2(1)2. The lattice constants are a = b = 12.737(5) and c = 18.288(7) Å. The compound contains chains of repeating(More)
The 1 : 2 reaction of [Ti(eta(5)-C(5)H(5))(2)Cl(2)] and AgF in CHCl(3)/H(2)O yielded the fluoro analog [Ti(eta(5)-C(5)H(5))(2)F(2)] (1) in almost quantitative yield (C(5)H(5) is the cyclopentadienyl group). The coordination about the Ti(IV) atom formed by two fluoro ligands and the centroids of the cyclopentadienyl rings is distorted tetrahedral. The(More)
The use of 2-pyridinealdoxime (paoH)/N,N'-donor ligand (L-L) "blend" in cobalt chemistry has afforded two cationic mononuclear cobalt(III) complexes of the general type [Co(pao)(2)(L-L)](+), where L-L = 1,10-phenanthroline (phen) and 2,2'-bipyridine (bpy). The CoCl(2)/paoH/L-L (1 : 2 : 1) reaction system in MeOH gives complexes(More)
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