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High nuclearity carbonyl clusters of rhodium. Part 2. Crystal and molecular structure of the tetramethylammonium salt of dodeca-μ-carbonyl-dodecacarbonylhydrido-polyhedro-tridecarhodate(4-)-1- methylpyrrolidin-2-one (1/3)
No full textThe title compound, [N(CH3)4]4[Rh13H(CO) 24]·3C5H9NO, crystallises in the triclinic space group P1 with unit-cell dimensions a = 22.596(11), b = 14.263(7), c = 14.512(8) Å, α = 65.56(3), β = 107.58(4), γ = 100.86(5)°, and Z = 2. The structure has been solved by conventional Patterson and Fourier methods from single-crystal X-ray counter data and refined by least-squares methods to R 0.061 for 3 680 significant reflections. The anion, of idealised Cs symmetry, containing a centred twinned-cuboctahedron of metal atoms, is similar to that of the other members of the family [Rh13H5-n(CO)24]n- already studied. The mean value of the Rh-Rh bond lengths, ranging from 2.718(3) to 2.894(3) Å, is 2.782 Å. The Rh-C and C-O interactions for the 12 terminal and for the 12 edge-bridging CO groups have mean values of 1.80, 1.18, and 1.97, 1.21 Å, respectively. The hydride atom has been located in a semi-octahedral cavity, i.e. on a square face of the cluster, bisected by the ideal mirror plane
A large rhodium carbonyl cluster compound containing four encapsulated nitrogen atoms: Synthesis and X-ray structure of the anion [Rh 23N4(CO)20(μ-CO)18]3
No full textThe novel anion [Rh23N4(CO)20(μ-CO) 18]3-, obtained by controlled pyrolysis of [Rh 6N(CO)15]-, contains a large metallic polyhedron of idealized C2 symmetry, which has 21 surface metals and encloses a couple of bonded rhodium atoms and four interstitial nitrogen atoms, each connected to five rhodium atoms
Synthesis and x-ray crystal structure of the cluster compound [Rh12H2(μ3-CO)3(μ-CO) 9(CO)13] containing a metallic array formed by three superimposed cofacial octahedral units
No full textThe neutral species [Rh12H2(CO)25], obtained by reaction of [Rh14(CO)25]4- with CF3CO2H in the presence of CO and chloride ions, contains a new Rh12 metallic array formed by superimposition of three face-sharing octahedral units, and in donor solvents readily gives the [Rh12H(CO)25]- monoanion
Synthesis and x-ray crystal structure of the cluster dianion, [Rh 10(CO)21]2-, containing a new compact array of metal atoms
No full textThe anion [Rh10(CO)21]2-, obtained by reaction of [Rh9(CO)19]3- with the [Rh(CO) 2(NCMe)2]+ cation, contains a novel decanuclear metallic skeleton which is a fragment of hexagonal close-packed lattice formed by three superimposed layers (3/4/3 metals), with two octahedral and two tetrahedral condensed units as confirmed by X-ray crystallography
Synthesis and x-ray crystal structure of the novel cluster anion [Rh 12H(N)2(CO)23]3-; an irregular metallic array containing two interstitial nitrogen atoms
No full textThe anion [Rh12H(N)2(CO)23]3-, obtained by alkaline pyrolysis of [Rh6N(CO)15] -, contains a novel irregular dodecanuclear metallic skeleton which shows a trigonal-prismatic and a distorted square-antiprismatic hole occupied by two encapsulated nitrogen atoms
Synthesis and X-ray crystal structure of the [Rh5(CO) 8(μ-CO)6I]2- anion containing a trigonal bipyramidal rhodium cluster
No full textThe anion [Rh5(CO)14I]2- (1) has been obtained by reaction of I- with Rh4(CO)12; the cluster, containing five metal atoms, consists of an elongated trigonal bipyramid with the iodide ligand terminally bound to an apical rhodium atom
Synthesis and X-ray structural characterization of the [Rh22(μ3-CO)7(μ-CO)18(CO) 12]4- anion containing a large close-packed cluster with an ABAC sequence of compact layers [1]
No full textA mixed-metal nitrido carbonyl cluster compound. Synthesis and X-ray structure of the [PtRh10N(μ-CO)10(CO)11]3- anion
No full textA new family of nitrido carbonyl clusters. Synthesis and structural characterization of the anions [Rh6MN(CO)15]2- (M=Co, Rh, or Ir), and evidence for metal atom migration in the cluster
No full textThe anions [Rh6MN(CO)15]2- (M=Co, Rh, or Ir), obtained by condensation of [Rh6N(CO)15]- and [M(CO)4]-, contain a metallic array consisting of a trigonal prism capped on a square face, with the nitride inside the prismatic hole; the mixed-metal species show an unexpected migration of the entering metal from the capping position to the vertices of the prism
A novel high-nuclearity rhodium carbonyl cluster compound containing two interstitial nitrogen atoms : Synthesis and X-ray structure of the anion [Rh 14N2(CO)25]2
No full textThe novel anion [Rh14N2(CO)25] 2-, obtained by pyrolysis of [Rh6N(CO)15] -, contains a metal-centred tetradecanuclear metallic polyhedron, with two interstitial nitrogen atoms, both five-connected to rhodium atoms
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