HELMAR GORLS
Articles written in Journal of Chemical Sciences
Volume 131 Issue 10 October 2019 Article ID 0103
MOHAMMAD EL-KHATEEB QUSAY TANASH HASSAN ABUL-FUTOUH HELMAR GORLS WOLFGANG WEIGAND
The dithiocarbonato metal complexes M(k2S,S-S2CO)(k2P,P-dppf) {M= Ni, Pd, Pt; dppf=bis(diphenylphosphino)ferrocene} are obtained from the reaction of the metal(II) complexes [M(K2S,S-S2-COEt)2] with the dppf ligand or from the chloride substitution of M(k2P,P-dppf)Cl2 by the O-ethyldithiocabonatoanion. These complexes are produced by C-O bond cleavage by the O-ethyldithiocarbonato anion present in solution. These new complexes have been characterized by UV-Vis, NMR, IR spectroscopy and elemental analysis. The structures of the three complexes were further confirmed by single-crystal X-ray diffraction analysis.
Volume 132 All articles Published: 22 January 2020 Article ID 0023
Half-sandwich iron complexes bearing vinyl-selenocarboxylato ligands
TAGHREED AL-JAZZAZI MOHAMMAD EL-KHATEEB LAMA QURAAN HASSAN ABUL-FUTOUH HELMAR GORLS WOLFGANG WEIGAND
Vinyl selenocarboxylato iron complexes of the formula CpFe(CO)2SeCOCH=C(R1)(R2) {R1 = H, R2 = Me, R1 = R2 = Me, R1 = H, R2 = CH=CHMe} are synthesized by the reaction of (l-Se)[CpFe(CO)2]2 with the corresponding vinyl acid chlorides ClCOCH=C(R1)(R2). Photolytic substitutionsof CpFe(CO)2SeCOCH=CMe2 with EPh3 gave the monosubstituted complexes CpFe(CO)(EPh3)-SeCOCH=CMe2 (E = P, As, Sb) in good yields. The new complexes have been characterized by UV-Vis, IR,1H-NMR, 13C{1H}-NMR, 77Se{1H}-NMR, 31P{1H}-NMR spectroscopy and elemental analysis. The solidstate structures of CpFe(CO)2SeCOCH=CMe2 and CpFe(CO) AsPh3)SeCOCH=CMe2 were determined by X-ray crystallography. The cyclic voltammetric measurements of CpFe(CO)2SeCOCH=CMe2 were recorded.
Volume 132 All articles Published: 14 January 2020 Article ID 0022
Vinylic-thiocarboxylate complexes of iron: synthesis, characterization and reactions
MOHAMMAD EL-KHATEEB KHALEEL JASALI BATOOL AL-JUNEIDI HASSAN ABUL-FUTOUH HELMAR GORLS WOLFGANG WEIGAND
Half-sandwich iron thiocarboxylate complexes of the general formula CpFe(CO)2-SCOCH=C(R¢)(RR¢¢){R¢ = H, R¢¢ = Me, R¢ = R¢¢ = Me, R¢ = H, R¢¢ = CH=CHMe}) are obtained from the reaction of (l-Sx)[CpFe(CO)2]2 (x = 1–5) with the vinyl acid chlorides ClCOCH=C(R¢)(R¢¢). The substitution reaction of CpFe(CO)2SCOCH=C(R)Me with EPh3 produced the monosubstituted complexesCpFe(CO)(EPh3)SCOCH=C(R)Me (R = Me, E = P, R = H, E = As, Sb). All the new complexes have been characterized by UV-Vis, IR, 1H-NMR, 13C{1H}-NMR, 31P{1H}-NMR spectroscopy and elemental analysis.The solid state structures and the cyclic voltammetric measurements of CpFe(CO)2SCOCH=CMe2 andCpFe(CO)(PPh3)SCOCH=CMe2 were determined.
Volume 132, 2020
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