Tricarbonyl­chlorido{N-[2-(diphenyl­phosphino)benzyl­idene]benzyl­amine-κ2 N,P}rhenium(I) dichloro­methane solvate

In the crystal structure of the title compound, [ReCl(C26H22NP)(CO)3]·CH2Cl2, the ReI atom exhibits a distorted octa­hedral environment defined by a facial arrangement of three carbonyl groups, a Cl atom and an N-[2-(diphenyl­phosphino)benzyl­idene]benzyl­amine ligand. The compound crystallizes with one CH2Cl2 mol­ecule per asymmetric unit. The benzyl­amine ligand and the ReI centre form a non-planar six-membered chelate ring

Chlorido[2-(diphenyl­phos­phino)­aceto­phenone]gold(I)

In the crystal structure of the title compound, [AuCl(C20H17OP)], the phosphine acts as a monodentate ligand. The Au atoms are attached solely to the P and Cl atoms. The coordination is linear without any tendency to aggregate via aurophilic inter­actions

Tetra­kis(triphenyl­arsine)copper(I) hexa­fluoridophosphate

In the crystal structure of the title compound, [Cu(C18H15As)4]PF6, the Cu atom is coordinated by four As atoms of triphenyl­arsine ligands in a tetra­hedral geometry. The complex cation is located on a crystallographic threefold axis. Both PF6 − anions are located on special positions of site symmetry . The Cu—As bond of the independent arsine ligand is shorter than the Cu—As bonds of the three symmetry-related arsine ligands

{Bis[2-(diphenyl­phosphan­yl)phen­yl] ether-κ2 P,P′}(1,1′-dibenz­yl-1H,1′H-4,4′bi-1,2,3-triazole-κ2 N3,N 3′)copper(I) hexa­fluorido­phosphate dichloro­methane hemisolvate

In the crystal structure of the title compound, [Cu(C18H16N6)(C36H28OP2)]PF6·0.5CH2Cl2 or [Cu(DPEPhos)(Bn-bta)]PF6·0.5CH2Cl2 {DPEPhos = bis­[(diphenyl­phosphan­yl)phen­yl] ether and Bn-bta = 1,1′-dibenzyl-1H,1′H-4,4′-bi-1,2,3triazol­e}, the Cu atom is coordinated by two N and two P atoms of the ligands in a strongly distorted tetra­hedral environment. There are two crystallographically independent complex cations present, which differ significantly in their geometrical parameters. The solvent molecule is disordered but satisfactory atomic positions could not be determined

μ-Bis(diphenyl­arsino)methane-κ2 As:As′-bis­[chloridogold(I)]

The title structure, [Au2Cl2(C25H22As2)], consists of discrete mol­ecules disposed about a crystallographic twofold axis. The Au atom exhibits a nearly linear coordination by As and Cl atoms. Au⋯Au inter­actions [3.4285Å(4) Å] and a weak intermolecular C—H⋯Cl hydrogen bond are present

Benzotriazolate cage complexes of tin(II) and lithium: halide-influenced serendipitous assembly

The one-pot reactions of the tin(II) halides SnX2 (X = F, Cl, Br, I) with lithium hexamethyldisilazide, [Li(hmds)], and benzotriazole, (bta)H, produce contrasting outcomes. Tin(II) fluoride does not react with [Li(hmds)] and (bta)H, the outcome being the formation of insoluble [Li(bta)]∞. Tin(II) chloride and tin(II) bromide react with [Li(hmds)] and (bta)H in toluene to produce the hexadecametallic tin(II)-lithium cages [(hmds)8Sn8(bta)12Li8X4]·(ntoluene) [X = Cl, 3·(8 toluene); X = Br, 4·(3 toluene)]. The reaction of tin(II) iodide with [Li(hmds)] and (bta)H in thf solvent produces the ion-separated species [{(thf)2Li(bta)}3{Li(thf)}]2[SnI4]·(thf), [5]2[SnI4]·(thf), the structure of which contains a cyclic trimeric unit of lithium benzotriazolate and a rare example of the tetraiodostannate(II) dianion

Syntheses, crystal structures, reactivity, and photochemistry of gold(III) bromides bearing N-heterocyclic carbenes

Gold(I) complexes bearing N-heterocyclic carbenes (NHC) of the type (NHC)AuBr (3a/3b) [NHC = 1-methyl-3-benzylimidazol-2-ylidene (= MeBnIm), and 1,3-dibenzylimidazol-2-ylidene (= Bn2Im)] are prepared by transmetallation reactions of (tht)AuBr (tht = tetrahydrothiophene) and (NHC)AgBr (2a/2b). The homoleptic, ionic complexes [(NHC)2Au]Br (6a/6b) are synthesized by the reaction with free carbene. Successive oxidation of 3a/3b and 6a/6b with bromine gave the respective (NHC)AuBr3 (4a/4b) and [(NHC)2AuBr2]Br (7a/7b) in good overall yields as yellow powders. All complexes were characterized by NMR spectroscopy, mass spectrometry, elemental analysis and single crystal X-ray diffraction. Reactions of the Au(III) complexes towards anionic ligands like carboxylates, phenolates and thiophenolates were investigated and result in a complete or partial reduction to a Au(I) complex. Irradiation of the Au(III) complexes with UV light yield the Au(I) congeners in a clean photo-reaction

Synthesis, structure and photophysical properties of binuclear methylplatinum complexes containing cyclometalating 2-phenylpyridine or benzo{h}quinoline ligands: a comparison of intramolecular Pt–Pt and π–π interactions

The binuclear cyclometalated complexes [Pt2Me2(ppy)2(μ-dppm)], 1a, and [Pt2Me2(bhq)2(μ-dppm)], 1b, in which ppy = 2-phenylpyridyl, bhq = benzo{h}quinoline and dppm = bis(diphenylphosphino)methane, were synthesized by the reaction of [PtMe(SMe2)(ppy)] or [PtMe(SMe2)(bhq)] with 1/2 equiv of dppm at room temperature, respectively. Complexes 1a and 1b were fully characterized by multinuclear (1H, 31P, 13C, and 195Pt) NMR spectroscopy and were further identified by single crystal X-ray structure determination. A comparison of the intramolecular Pt–Pt and π–π interactions in complexes 1a and 1b has been made on the basis of data on crystal structures and wave functions analysis. The binuclear complexes 1a and 1b are luminescent in the solid state, and showing relatively intense orange–red emissions stemming from 3MMLCT excited states. The reaction of complex 1b with excess MeI gave the binuclear cyclometalated Pt(IV)–Pt(IV) complex [Pt2Me4(bhq)2(μ-I)2], 2. Crystal structure of complex 2 shows intermolecular C–H⋯I and C–H⋯π interactions in solid state

Hydrogen Bonding in Crystals of Pyrrol-2-yl Chloromethyl Ketone Derivatives and Methyl Pyrrole-2-Carboxylate

The crystal and molecular structure of three derivatives of carbonyl 2-substituted pyrroles was determined by the single crystal X-ray diffraction. There are 2,2-dichloro-1-(1-methyl-1H-pyrrol-2-yl)ethan-1-one (I), 2-chloro-1-(1H-pyrrol-2-yl)ethan-1-one (II) and methyl 1H-pyrrole-2-carboxylate (III). All compounds crystallize with one molecule in the asymmetric unit in P212121 for I and II, and P21/c group for III. Despite the similar structures of the investigated compounds, the hydrogen bonds formed in their crystal structures adopt different H-bond motifs. In structure I, the dimers R12(5) and R21(7) form a chain along the b-axis, while in structures II and III, chain C(5) structural motifs are formed. The single point calculations at a ωB97XD/6-311++G(d,p) level of theory indicate that systems with N-H⋯O bonds have greater interaction energies (are more stable) compared with systems featuring C-H⋯O/Cl bonds. A descriptive Hirshfeld analysis showed that the greatest differences are visible for the H⋯H interactions. These H⋯H interactions predominate in structure III, accounting for 45% of the intermolecular interactions, while in structures I and II, they account for only 25%. Although compounds I-II contain Cl-atoms, the percentage of Cl⋯Cl interactions is rather low. In structure with two Cl-atoms (I), the contribution of the Cl⋯Cl contacts is 8.7% and for II, the contribution accounts for only 0.4% of the interactions

Stoichiometry-controlled FeP nanoparticles synthesized from a single source precursor

Phase-pure FeP nanoparticles (NPs) have been synthesized through low temperature thermolysis of the single source precursor [(CO)4Fe(PH3)]. Examination of the mechanism demonstrates the central role of the labile CO ligands and the weak P–H bonds to yield stoichiometry controlled FeP materials