Ulrich Abram
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View article: Cyclopentadienyl Complexes of Technetium
Cyclopentadienyl Complexes of Technetium Open
The number of structurally investigated cyclopentadienyl (Cp−) complexes of technetium is limited in contrast to the situation with its heavier homolog, rhenium. Although this could be attributed to the radioactivity of all isotopes of the…
View article: Organogold(III) Complexes with Chelating Thiourea-Type Ligands
Organogold(III) Complexes with Chelating Thiourea-Type Ligands Open
The gold(III) starting material [Au(damp-κC1,N)Cl2] (Hdamp = 2-(dimethylaminomethyl)benzene) reacts with the thiourea-type ligands 3,3-diethyl-1-benzoylthiourea (HL1) or N-(3,3-diethylamino-thiocarbonyl)-N′-(2-hydroxyphenyl)benzamidine (H2…
View article: Binuclear Gold(I) Complexes with a Potentially Tetradentate S,N,N,S Ligand
Binuclear Gold(I) Complexes with a Potentially Tetradentate S,N,N,S Ligand Open
The potentially tetradentate SNNS ligand N,N′-(ethane-1,2-diyl)bis(N″-(diethylcarbamothioyl)benzimidamide, H2L, was synthesized by the reaction of ethylenediamine with two equivalents of the corresponding benzimide chloride. H2L readily re…
View article: Thionitrosyl Complexes of Technetium and Rhenium with Sterically Encumbered <i>m</i>-Terphenyl Isocyanides─Steric Bulk Matters
Thionitrosyl Complexes of Technetium and Rhenium with Sterically Encumbered <i>m</i>-Terphenyl Isocyanides─Steric Bulk Matters Open
Low-valent thionitrosyl complexes of technetium and rhenium with the bulky isocyanides CNArTripp2, CNArDipp2, and CNArMes2 (Tripp = 2,4,6-triisopropylphenyl, Dipp = 2,6-diisopropylphenyl, Mes = 2,4,6-trimethylphenyl) have been synthesized …
View article: Topology‐Controlled Metallamacrocyclic Assemblies Containing Ni<sup>2+</sup> and Alkali Metal Ions with Catechol‐Scaffolding Aroylbis(N,N‐Diethylthiourea)
Topology‐Controlled Metallamacrocyclic Assemblies Containing Ni<sup>2+</sup> and Alkali Metal Ions with Catechol‐Scaffolding Aroylbis(N,N‐Diethylthiourea) Open
Self‐assemblies between H 2 L cat ligand and the mixture of Ni(OAc) 2 · 4 H 2 O and alkaline metal chlorides MCl (M = K, Rb, Cs) in MeOH/H 2 O can form metallacoronate and metallacryptate complexes. The topology of the metal complexes stro…
View article: [Tc(NO)Cl2(PPh3)2(CH3CN)] and Its Reactions with 2,2′-Dipyridyl Dichalcogenides
[Tc(NO)Cl2(PPh3)2(CH3CN)] and Its Reactions with 2,2′-Dipyridyl Dichalcogenides Open
The sparingly soluble technetium(I) complex [TcI(NO)Cl2(PPh3)2(CH3CN)] (1) slowly dissolves during reactions with 2,2′-dipyridyl ditelluride, (2-pyTe)2, 2,2′-dipyridyl diselenide, (2-pySe)2, or 2,2′-dipyridyl disulfide, (2-pyS)2, under for…
View article: Thorium(IV) and Uranium(IV) Complexes with 2,6-Dipicolinoylbis(N,N-diethylthiourea) Ligands
Thorium(IV) and Uranium(IV) Complexes with 2,6-Dipicolinoylbis(N,N-diethylthiourea) Ligands Open
The reaction of thorium nitrate hydrate with 2,6-dipicolinoylbis(N,N-diethylthiourea), H2Lpic, results in the hydrolysis of the organic ligand and the formation of [Th(2,6-dipicolinolate)2(H2O)4] (1). Hydrolysis can be avoided by the use o…
View article: [99mTc]Technetium and Rhenium Dithiocarbazate Complexes: Chemical Synthesis and Biological Assessment
[99mTc]Technetium and Rhenium Dithiocarbazate Complexes: Chemical Synthesis and Biological Assessment Open
Background/Objectives: Dithiocarbazates (DTCs) and their metal complexes have been studied regarding their property as anticancer activities. In this work, using S-benzyl-5-hydroxy-3-methyl-5-phenyl-4,5-dihydro-1H-pirazol-1-carbodithionate…
View article: Bis{µ-(2,2′-bipyridine-1κ2N,N′)-(6,6′-dicarbonyl-1κ2O,O′:2κO′)bis(N,N-diethylthioureato-2κS)}(acetato-1κO)(µ-acetato-1κO:2-κO′)(methanol-2κO)thoriumnickel
Bis{µ-(2,2′-bipyridine-1κ2N,N′)-(6,6′-dicarbonyl-1κ2O,O′:2κO′)bis(N,N-diethylthioureato-2κS)}(acetato-1κO)(µ-acetato-1κO:2-κO′)(methanol-2κO)thoriumnickel Open
Reactions of 2,2′-bipyridine-6,6′-dicarbonyl-bis(N,N-diethylthiourea), H2Lbipy, with a mixture of thorium nitrate hydrate and nickel acetate hydrate in methanol with NEt3 as a supporting base yield brown single crystals of the bimetallic c…
View article: A mixed isocyanide Mn(<scp>i</scp>) complex and its reduction to a metallate
A mixed isocyanide Mn(<span>i</span>) complex and its reduction to a metallate Open
A stepwise ligand exchange starting from [Mn(CO) 5 Br] and subsequent reduction gave the first heteroleptic isocyanide manganese(−1) complex, [Mn(CN p -FAr DArF2 ) 3 (CN t Bu) 2 ] – , exhibiting a five-coordinate, trigonal bipyramidal coor…
View article: Uranium-Mediated Thiourea/Urea Conversion on Chelating Ligands
Uranium-Mediated Thiourea/Urea Conversion on Chelating Ligands Open
2,6-Dipicolinoylbis(N,N-dialkylthioureas) and H2LR2 react with uranyl salts and a supporting base (e.g., NEt3) under formation of monomeric or oligomeric complexes of the compositions [UO2(LR2)(solv)] (solv = donor solvents) or [{UO2(LR2)(…
View article: Bimetallic Uranium Complexes with 2,6-Dipicolinoylbis(N,N-Dialkylthioureas)
Bimetallic Uranium Complexes with 2,6-Dipicolinoylbis(N,N-Dialkylthioureas) Open
2,6-Dipicolinoylbis(N,N-dialkylthioureas), H2LR, readily react with uranyl salts under formation of monomeric or dimeric complexes of the compositions [UO2(LR)(solv)] (solv = donor solvents such as H2O, MeOH or DMF) or [{UO2(LR)(µ-OMe)}2]2…
View article: Phenylseleninate-Connected Telluroxane Clusters
Phenylseleninate-Connected Telluroxane Clusters Open
Hydrolysis of PhTeI3 in the presence of sodium phenylseleninate and M3+ ions (M = Y, Nd, Ce) gives well-defined, bowl-shaped telluroxane clusters. Each of the two half-spheres of the compositions [(PhTe)18{ML}O24]7+/8+ ({ML} = {Y(NO3)(H2O)…
View article: Nitrosyl and Thionitrosyl Complexes of Technetium and Rhenium and Their Reactions with Hydrotris(pyrazolyl)borates
Nitrosyl and Thionitrosyl Complexes of Technetium and Rhenium and Their Reactions with Hydrotris(pyrazolyl)borates Open
The very limited number of structurally known thionitrosyl complexes of technetium was increased by the synthesis of [TcII(NS)Cl3(PPh3)2] (3) and [TcII(NS)Cl3(PPh3)(OPPh3)] (4) and their reaction products with hydrotris(pyrazolyl)borates, …
View article: Thionitrosyl Complexes of Rhenium and Technetium with PPh3 and Chelating Ligands—Synthesis and Reactivity
Thionitrosyl Complexes of Rhenium and Technetium with PPh3 and Chelating Ligands—Synthesis and Reactivity Open
In contrast to corresponding nitrosyl compounds, thionitrosyl complexes of rhenium and technetium are rare. Synthetic access to the thionitrosyl core is possible by two main approaches: (i) the treatment of corresponding nitrido complexes …
View article: Organotellurium(II) and ‐(IV) Compounds with Picolinoylbis(thioureas): From Simple 1 : 1 Adducts to Multimetallic Aggregates
Organotellurium(II) and ‐(IV) Compounds with Picolinoylbis(thioureas): From Simple 1 : 1 Adducts to Multimetallic Aggregates Open
Reactions of 2,6‐dipicolinoylbis( N,N ‐diethylthiourea) (H 2 L Et ) with common tellurium(IV) starting materials such as PhTeBr 3 or TeBr 4 yield various tellurium(IV) and tellurium(II) compounds depending on the conditions applied. Equimo…
View article: Gold(I) and Silver(I) Complexes Containing Hybrid Sulfonamide/Thiourea Ligands as Potential Leishmanicidal Agents
Gold(I) and Silver(I) Complexes Containing Hybrid Sulfonamide/Thiourea Ligands as Potential Leishmanicidal Agents Open
Leishmaniasis is a group of parasitic diseases with the potential to infect more than 1 billion people; however, its treatment is still old and inadequate. In order to contribute to changing this view, this work consisted of the developmen…
View article: [Tc(NO)(Cp)(PPh3)Cl] and [Tc(NO)(Cp)(PPh3)(NCCH3)](PF6), and Their Reactions with Pyridine and Chalcogen Donors
[Tc(NO)(Cp)(PPh3)Cl] and [Tc(NO)(Cp)(PPh3)(NCCH3)](PF6), and Their Reactions with Pyridine and Chalcogen Donors Open
Reactions of the technetium(I) nitrosyl complex [Tc(NO)(Cp)(PPh3)Cl] with triphenylphosphine chalcogenides EPPh3 (E = O, S, Se), and Ag(PF6) in a CH2Cl2/MeOH mixture (v/v, 2/1) result in an exchange of the chlorido ligand and the formation…
View article: Gold(I) {2}‐Metallacoronates derived from a Catechol‐scaffolding Aroylbis(<i>N</i>,<i>N</i>‐diethylthiourea): Syntheses and Structures
Gold(I) {2}‐Metallacoronates derived from a Catechol‐scaffolding Aroylbis(<i>N</i>,<i>N</i>‐diethylthiourea): Syntheses and Structures Open
One‐pot reactions of catechol‐scaffolding aroylbis( N , N ‐diethylthiourea) H 2 L cat and mixtures of lanthanide nitrates Ln(NO 3 ) 3 (Ln 3+ =La 3+ , Nd 3+ or Yb 3+ ) or indium(III) chloride InCl 3 and [Au(tht)Cl] in methanol in the presen…
View article: CCDC 2269017: Experimental Crystal Structure Determination
CCDC 2269017: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2269024: Experimental Crystal Structure Determination
CCDC 2269024: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2269018: Experimental Crystal Structure Determination
CCDC 2269018: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2269025: Experimental Crystal Structure Determination
CCDC 2269025: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2260030: Experimental Crystal Structure Determination
CCDC 2260030: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2260032: Experimental Crystal Structure Determination
CCDC 2260032: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2260031: Experimental Crystal Structure Determination
CCDC 2260031: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: The Unique Ambiphilicity of Tellurium in the [MesitylTe(I)(I<sub>2</sub>)(I<sub>3</sub>)]<sup>−</sup> Anion
The Unique Ambiphilicity of Tellurium in the [MesitylTe(I)(I<sub>2</sub>)(I<sub>3</sub>)]<sup>−</sup> Anion Open
A first example of an aryltellurium(II) compound with three different bonding modes to iodine featuring covalent and non‐covalent bonds such as two orthogonal, ambiphilic σ‐hole interactions is introduced: [MesTe(I)(I 2 )(I 3 )] − . It is …
View article: CCDC 2262128: Experimental Crystal Structure Determination
CCDC 2262128: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2262126: Experimental Crystal Structure Determination
CCDC 2262126: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …