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Cis-Tetra-kis(?-N-phenyl-acetamidato)-?(4) N:O;?(4) O:N-bis-[(benzo-nitrile-?N)rhodium(II)](Rh-Rh).

ABSTRACT: The complex molecule of the title compound, [Rh2{N(C6H5)COCH3}4(C6H5CN)2], exhibits crystallographically imposed centrosymmetry. The four acetamide ligands bridging the dirhodium core are arranged in a 2,2-cis manner, with two N atoms and two O atoms coordinating to the unique Rh(II) atom cis to one another. The Neq-Rh-Rh-Oeq torsion angles on the acetamide bridges vary between 1.62?(4) and 1.78?(4)°. The Rh-Rh bond length is 2.4319?(3)?Å. The axial nitrile ligand completes the distorted octahedral coordination sphere and shows a non-linear coordination with an Rh-N-C bond angle of 167.14?(15)°, while the N-C bond length is 1.135?(3)?Å.

SUBMITTER: Eagle CT

PROVIDER: S-EPMC3684889 | biostudies-other | 2013 Jun

REPOSITORIES: biostudies-other

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cis-Tetra-kis(μ-N-phenyl-acetamidato)-κ(4) N:O;κ(4) O:N-bis-[(benzo-nitrile-κN)rhodium(II)](Rh-Rh).

Eagle Cassandra T CT Quarshie Fredricka F Ketron Megan E ME Atem-Tambe Nkongho N

Acta crystallographica. Section E, Structure reports online 20130518 Pt 6

The complex molecule of the title compound, [Rh2{N(C6H5)COCH3}4(C6H5CN)2], exhibits crystallographically imposed centrosymmetry. The four acetamide ligands bridging the dirhodium core are arranged in a 2,2-cis manner, with two N atoms and two O atoms coordinating to the unique Rh(II) atom cis to one another. The Neq-Rh-Rh-Oeq torsion angles on the acetamide bridges vary between 1.62 (4) and 1.78 (4)°. The Rh-Rh bond length is 2.4319 (3) Å. The axial nitrile ligand completes the distorted octahed ...[more]

PMID: 23794991

Similar Datasets

Crystal structure of tetra-kis-(?-N-phenyl-acetamidato)-?(4) N:O;?(4) O:N-bis-[(2-methyl-benzo-nitrile-?N)rhodium(II)](Rh-Rh).

Project description:The complex molecule of the title compound, [Rh2{N(C6H5)COCH3}4(C8H7N)2], exhibits inversion symmetry. The four acetamidate ligands bridging the dirhodium core are arranged in a 2,2-trans manner with two N atoms and two O atoms coordinating to each Rh(II) atom trans to one another. The Neq-Rh-Rh-Oeq torsion angles on the acetamidate bridge vary between -4.07?(5) and -6.78?(7)°. The axial nitrile ligands complete the distorted octa-hedral coordination sphere of each Rh(II) atom and show a nonlinear coordination with Rh-N-C bond angles of 151.6?(3) and 152.5?(3)°. The bond lengths of the two nitrile triple bonds are 1.133?(5) and 1.137?(5)?Å.

| S-EPMC4186189 | biostudies-literature

Tetra-kis[?-N-(2,4,6-trimethyl-phen-yl)acetamidato]-??N:O;??O:N-bis-[(benzo-nitrile-?N)rhodium(II)](Rh-Rh).

Project description:The title structure, [Rh?(C??H??NO)?(C?H?N)?], contains a dinuclear Rh complex of point symmetry -4 with an Rh-Rh unit and two benzonitrile ligands located in special positions along the twofold axis passing through -4. Four symmetry-equivalent mesitylacetamidate ligands bridge the Rh-Rh unit. Thus, each Rh(II) atom has an approximately octa-hedral coordination by one Rh [Rh-Rh = 2.4290?(6)?Å], two acetamidate O atoms trans to each other [Rh-O = 2.044?(3)?Å], two acetamidate N atoms trans to each other [Rh-N = 2.091?(4)?Å], and a benzonitrile N atom trans to Rh [Rh-N = 2.222?(3)?Å]. The structure is held together by weak van der Waals forces.

| S-EPMC3393156 | biostudies-literature

(3-Methyl-benzo-nitrile-κN)tetra-kis(μ-N-phenyl-acetamidato)-κ(4) N:O;κ(4) O:N-di-rhodium(II)(Rh-Rh).

Project description:In the title compound, [Rh2(C8H8NO)4(C8H7N)], the four acetamidate ligands bridging the dirhodium core are arranged in a 2,2-trans manner. One Rh(II) atom is five-coordinate, in a distorted pyramidal geometry, while the other is six-coord-in-ate, with a disorted octa-hedral geometry. For the six-coord-inate Rh(II) atom, the axial nitrile ligand shows a non-linear Rh-nitrile coordination with an Rh-N-C bond angle of 166.4 (4)° and a nitrile N-C bond length of 1.138 (6) Å. Each unique Rh(II) atom is coordinated by a trans pair of N atoms and a trans pair of O atoms from the four acetamide ligands. The Neq-Rh-Rh-Oeq torsion angles on the acetamide bridge varies between 12.55 (11) and 14.04 (8)°. In the crystal, the 3-methyl-benzo-nitrile ring shows a π-π inter-action with an inversion-related equivalent [inter-planar spacing = 3.360 (6) Å]. A phenyl ring on one of the acetamide ligands also has a face-to-face π-π inter-action with an inversion-related equivalent [inter-planar spacing = 3.416 (5) Å].

| S-EPMC3884982 | biostudies-literature

(3-Methyl-benzo-nitrile-1?N)-cis-tetra-kis(?-N-phenyl-acetamidato)-1:2?(4) N:O;1:2?(4) O:N-dirhodium(II)(Rh-Rh).

Project description:The complex molecule of the title compound, [Rh2{N(C6H5)COCH3}4(NCC7H7)], has crystallographically-imposed mirror symmetry. The four acetamide ligands bridging the dirhodium core are arranged in a 2,2-cis manner with two N atoms and two O atoms coordinating to the unique Rh(II) atom cis to one another. The Neq-Rh-Rh-Oeq torsion angles on the acetamide bridge are 0.75?(7) and 1.99?(9)°. The axial nitrile ligand completes the distorted octa-hedral coordination sphere of one Rh(II) atom and shows a nonlinear coordination, with an Rh-N-C bond angle of 162.8?(5)°; the N-C bond length is 1.154?(7)?Å.

| S-EPMC4158479 | biostudies-literature

Tetra-kis(1,2-dimethoxy-ethane-κO,O')ytterbium(II) bis-(μ(2)-phenyl-selenolato-κSe:Se)bis-[bis-(phenyl-selenolato-κSe)mercurate(II)].

Project description:The title salt, [Yb(C(4)H(10)O(2))(4)][Hg(2)(C(6)H(5)Se)(6)], consists of eight-coordinate homoleptic [Yb(DME)(4)](2+) dications (DME is 1,2-dimethoxy-ethane) countered with [Hg(2)(SePh)(6)](2-) di-anions. The cations and anions have twofold rotation and inversion symmetry, respectively. The Yb centre displays a square-anti-prismatic coordination geometry and the Hg centre has a distorted tetra-hedral coordination environment. One phenyl-selenolate anion and one methyl group of a DME ligand are disordered over two positions with equal occupancies. This structure is unique in that it represents a less common mol-ecular lanthanide species in which the lanthanide ion is not directly bonded to an anionic ligand. There are no occurrences of the [Hg(2)(SePh)(6)](2-) dianion in the Cambridge Structural Database (Version of November 2007), but there are similar oligomeric and polymeric Hg(x)(SePh)(y) species. The crystal structure is characterized by alternating layers of cations and anions stacked along the c axis.

| S-EPMC2961915 | biostudies-literature

Tetra-kis[3,5-bis-(trifluoro-meth-yl)phenyl]tin(IV).

Project description:The title mol-ecule, [Sn(C(8)H(3)F(6))(4)], lies on a twofold rotation axis with the Sn(IV) ion in a distorted tetra-hedral coordination environment. Both -CF(3) groups attached to one of the unique benzene rings are disordered over two sets of sites, with the ratios of refined occupancies being 0.719?(14):0.281?(14) and 0.63?(5):0.37?(5).

| S-EPMC2969316 | biostudies-literature

Tetra-kis(?-2-phenyl-quinoline-4-carboxyl-ato-?(2)O:O')bis-[(methanol-?O)copper(II)].

Project description:The title complex, [Cu(2)(C(16)H(10)NO(2))(4)(CH(3)OH)(2)], consists of centrosymmetric wheel-shaped dinuclear neutral mol-ecules in which each Cu(II) atom is coordinated in a slightly distorted square-pyramidal geometry by four O atoms of carboxyl-ate groups from different ligands at the basal plane and an O atom of a methanol mol-ecule at the axial position. In the crystal, the dinuclear complex mol-ecules are linked into one-dimensional supra-molecular columns parallel to the b axis by O-H?N hydrogen bonds and ?-? stacking inter-actions [centroid-centroid distance = 3.7259?(11)?Å].

| S-EPMC3470168 | biostudies-literature

1,1,2,2-Tetra-kis(dimethyl-amino)-ethane-1,2-diium bis-(tetra-phenyl-borate) acetone disolvate.

Project description:The title compound, C(10)H(24)N(4) (2+)·2C(24)H(20)B(-)·2C(3)H(6)O, crystallizes with two acetone solvent mol-ecules per asymmetric unit. In the dication, both amidinium units are twisted about the central C-C single bond by 63.8?(3)° and the positive charges are delocalized over both N-C-N planes.

| S-EPMC3344502 | biostudies-literature

Bis(dicyanamido-?N)tetra-kis-(pyridazine-?N)nickel(II).

Project description:Reaction of nickel(II) chloride with sodium dicyanamide and pyridazine leads to single crystals of the title compound, [Ni{N(CN)(2)}(2)(C(4)H(4)N(2))(4)], in which the Ni(II) cation is octa-hedrally coordinated by two dicyanamide anions and four pyridazine ligands into a discrete complex that is located on a center of inversion.

| S-EPMC3344413 | biostudies-literature

Bis(tetra-phenyl-phospho-nium) tetra-chlorido-cobaltate(II).

Project description:The title compound, (C24H20P)2[CoCl4], was prepared under hydro-thermal conditions. In the crystal, the tetra-phenyl-phospho-nium cations are linked by pairs of weak C-H⋯π inter-actions into supra-molecular dimers; the Co(II) cations lie on twofold rotation axes and the tetra-hedral [CoCl4](2-) anions are linked with the tetra-phenyl-phospho-nium cations via weak C-H⋯Cl hydrogen bonds.

| S-EPMC4051096 | biostudies-literature

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