Bis[4-amino-N-(pyrimidin-2-yl-κN)benzene­sulfonamidato-κN](4,4′-di­methyl-2,2′-bipyridine-κ2 N,N′)cadmium dimethyl­formamide disolvate

In the title compound, [Cd(C10H9N4O2S)2(C12H12N2)]·2C3H7NO, the CdII ion lies on a twofold rotation axis, is six-coordinated by N atoms, and displays a trigonal–prismatic geometry arising from the two sulfadiazinate ligands and one 4,4′-dimethyl-2,2′-bipyridine ligand. Both ligands are bidentate and coordinate via their N atoms. The O and carbonyl C atoms of the dimethyl­formamide mol­ecule show disorder and were modelled with two different orientations and with site occupancies of 0.584 (10):0.416 (10). The geometry around the sulfadiazine S atom is distorted tetra­hedral. The crystal structure involves N—H⋯O hydrogen bonds which link mol­ecules into a three-dimensional network. Weak C—H⋯O hydrogen bonds are also observed

Bis[4-amino-N-(pyrimidin-2-yl)benzene­sulfonamidato]-κ2 N,N′;κN-aqua­bis­(dimethyl­formamide-κO)cadmium(II) monohydrate

In the title compound, [Cd(C10H9N4O2S)2(C3H7NO)2(H2O)]·H2O, the CdII ion displays a grossly distorted octa­hedral (or irregular) mer-CdN3O3 coodination polyhdron arising from its coordination by one N,N′-bidentate sulfadiazinate anion, one monodentate sulfadiazinate anion, two O-bonded dimethyl­formamide molecules and one water mol­ecule. A short Cd⋯N contact [2.890 (3) Å] to the monodentate sulfadiazinate ion also occurs. The dihedral angles between the planes of the aromatic rings of the anions are 86.81 (14) and 68.65 (14)°. The crystal structure features inter­molecular N—H⋯O, O—H⋯O and O—H⋯N hydrogen bonds

cis-Bis[4-amino-N-(pyrimidin-2-yl)benzene­sulfonamido-κ2 N,N′]bis­(dimethyl sulfoxide-κO)cadmium

The complete mol­ecule of the title compound, [Cd(C10H9N4O2S)2(C2H6OS)2], is completed by the application of a twofold rotation axis. The CdII atom is six coordinated by two bidentate sulfadiazinate anions and two dimethyl­sulfoxide mol­ecules. The resulting N4O2 donor set displays a distorted trigonal–prismatic coordination geometry. The S atom and methyl groups of dimethyl­sulfoxide are disordered over two sets of sites, with site occupancies of 0.715 (4) and 0.285 (4). The crystal structure features inter­molecular N—H⋯N and N—H⋯O hydrogen bonds that lead to the formation of layers in the ab plane

Reactivity of [Re\u3csub\u3e2\u3c/sub\u3e(CO)\u3csub\u3e8\u3c/sub\u3e(MeCN)\u3csub\u3e2\u3c/sub\u3e] with Thiazoles: Hydrido Bridged Dirhenium Compounds Bearing Thiazoles in Different Coordination Modes

Reactions of the labile compound [Re2(CO)8(MeCN)2] with thiazole and 4-methylthiazole in refluxing benzene afforded the new compounds [Re2(CO)7{μ-2,3-η2-C3H(R)NS}{η1-NC3H2(4-R)S}(μ-H)] (1, R = H; 2, R = CH3), [Re2(CO)6{μ-2,3-η2-C3H(R)NS}{η1-NC3H2(4-R)S}2(μ-H)] (3, R = H; 4, R = CH3) and fac-[Re(CO)3(Cl){η1-NC3H2(4-R)S}2] (5, R = H; 6, R = CH3). Compounds 1 and 2 contain two rhenium atoms, one bridging thiazolide ligand, coordinated through the C(2) and N atoms and a η1-thiazole ligand coordinated through the nitrogen atom to the same Re as the thiazolide nitrogen. Compounds 3 and 4 contain a Re2(CO)6 group with one bridging thiazolide ligand coordinated through the C(2) and N atoms and two N-coordinated η1-thiazole ligands, each coordinated to one Re atom. A hydride ligand, formed by oxidative-addition of C(2)–H bond of the ligand, bridges Re–Re bond opposite the thiazolide ligand in compounds 1–4. Compound 5 contains a single rhenium atom with three carbonyl ligands, two N-coordinated η1-thiazole ligands and a terminal Cl ligand. Treatment of both 1 and 2 with 5 equiv. of thiazole and 4-methylthiazole in the presence of Me3NO in refluxing benzene afforded 3 and 4, respectively. Further activation of the coordinated η1-thiazole ligands in 1–4 is, however, unsuccessful and results only nonspecific decomposition. The single-crystal XRD structures of 1–5 are reported

Mixed-metal Cluster Synthesis: [Re(CO)\u3csub\u3e3\u3c/sub\u3e(μ-S\u3csub\u3e2\u3c/sub\u3eNC\u3csub\u3e7\u3c/sub\u3eH\u3csub\u3e4\u3c/sub\u3e)]\u3csub\u3e2\u3c/sub\u3e as a Precursor for tri- and tetranuclear 2-mercaptobenzothiolato Capped Clusters

The readily prepared [Re2(CO)6(μ-S2NC7H4)2] (1) reacts with Group 8 trimetallic carbonyl clusters to yield new mixed-metal tri- and tetranuclear clusters. With [Os3(CO)10(NCMe)2] at 80 °C the tetranuclear mixed-metal cluster [Os3Re(CO)13(μ3-C7H4NS2)] (2) is the only isolated product. With Ru3(CO)12 products are dependent upon the reaction temperature. At 80 °C, a mixture of tetranuclear mixed-metal [Ru3Re(CO)13(μ3-C7H4NS2)] (5) and the triruthenium complex [Ru3(CO)9(μ-H)(μ3-C7H4NS2)] (4) results, while at 110 °C a second tetranuclear mixed-metal cluster, [Re2Ru2(CO)12(μ4-S)(μ-C7H4NS)(μ-C7H4NS2)] (3), resulting from carbon–sulfur bond scission, is the major product. Reaction of 1 With Fe3(CO)12 at 80 °C furnishes the trinuclear mixed-metal cluster [Fe2Re(CO)8(μ-CO)2(μ3-C7H4NS2)] (6). The reactivity of 6 has been probed with the aim of identifying any metal-based selectivity for carbonyl substitution. Addition of PPh3 in presence of Me3NO at 25 °C gives both the mono- and bis(phosphine)-substituted derivatives [Os3Re(CO)12(PPh3)(μ3-C7H4NS2)] (7) and [Os3Re(CO)11(PPh3)2(μ3-C7H4NS2)] (8). In 7 the PPh3 ligand occupies an axial site on wingtip osmium, while in 8 one PPh3 ligand is equatorially coordinated to wingtip osmium and the other is bonded to a hinge osmium. New complexes have been characterized by a combination of spectroscopic data and single crystal X-ray diffraction studies

Tetranuclear Group 7/8 Mixed-Metal and Open Trinuclear Group 7 Metal Carbonyl Clusters Bearing Bridging 2-mercapto-1-methylimidazole Ligands

The reactivity of group 7 metal dinuclear carbonyl complexes [M2(CO)6(μ-SN2C4H5)2] (1, M = Re; 2, M = Mn) toward group 8 metal trinuclear carbonyl clusters were examined. Reactions of 1 and 2 with [Os3(CO)10(NCMe)2] in refluxing benzene furnished the tetranuclear mixed-metal clusters [Os3Re(CO)13(μ3-SN2C4H5)] (3) and [Os3Mn(CO)13(μ3-SN2C4H5)] (4), respectively. Similar treatment of 1 and 2 with Ru3(CO)12 yielded the ruthenium analogs [Ru3Re(CO)13(μ3-SN2C4H5)] (5), and [Ru3Mn(CO)13(μ3-SN2C4H5)] (6), but in the case of 2 a secondary product [Mn3(CO)10(μ-Cl)(μ3-SN2C4H5)2] (7) was also formed. Compounds 3–6 have a butterfly core of four metal atoms with the M (Mn or Re) at a wingtip of the butterfly and containing a noncrystallographic mirror plane of symmetry. This result provides a potential method for the synthesis of a series of new group 7/8 mixed metal complexes containing a bifunctional heterocyclic ligand. Compound 7 is a unique example of a 54-electron trimanganese complex having bridging 2-mercapto-1-methylimidazolate and chloride ligands. Interestingly, the reaction of 1 with Fe3(CO)12 at 70–75 °C furnished the tri- and dirhenium complexes [Re3(CO)10(μ-H)(μ3-SN2C4H5)2] (8) and [Re2(CO)6(N2C4H5)(μ-SN2C4H5)2] (9), respectively instead of the expected formation of the mixed-metal clusters. The former is an interesting example of a 52-electron trirhenium-hydridic complex containing bridging 2-mercapto-1-methylimidazolate ligand, while the latter can be viewed as a 1-methylimidazole adduct of 1. No mixed Fe–Re complexes were produced in this reaction. The molecular structures of the new compounds 3–5 and 7–9 were established by single-crystal X-ray diffraction analyses and the DFT studies of compounds 5, 7 and 8 are reported

Sulfamerazine tetrahydrofuran monosolvate

The title solvate, C11H12N4O2S·C4H8O, crystallizes with three molecules of sulfamerazine [4-amino-N-(4-methylpyrimidin-2-yl)benzenesulfonamide] and three molecules of tetrahydrofuran solvent in the asymmetric unit. The dihedral angles between the aromatic rings in the sulfamerazine molecules are 83.40 (12), 87.40 (12) and 89.54 (12)°. In the crystal, molecules are linked by N—H...O and N—H...N hydrogen bonds, generating (10-6) sheets

Bis{3-amino-1-carbamothioyl-5-[(2-{[(5-methyl-1H-imidazol-3-ium-4-yl)methyl]sulfanyl}ethyl)amino]-1H-1,2,4-triazol-4-ium} hexachloridobismuthate(III) nitrate dihydrate

The asymmetric unit of the title hydrated salt, (C10H18N8S2)2[BiCl6]NO3·2H2O, contains two independent 3-amino-1-carbamothioyl-5-[(2-{[(5-methyl-1H-imidazol-3-ium-4-yl)methyl]sulfanyl}ethyl)amino]-1H-1,2,4-triazol-4-ium cations, one hexachloridobismuthate anion, one nitrate anion and two solvent water molecules. The dihedral angles between the imidazole and triazole rings in the cations are 44.7 (3) and 89.4 (3)°. The BiIII ion is coordinated by six chloride ligands in a slightly distorted octahedral geometry. In each cation, an intramolecular N—H...S hydrogen bond is observed. In the crystal, N—H...Cl, N—H...S, N—H...O, O—H...Cl, O—H...S and O—H...O hydrogen bonds connect the components into a three-dimensional network. In addtion, π–π stacking interactions between inversion-related triazole rings are observed, with a centroid–centroid distance of 3.322 (3) &#197