Publications by authors named "Imthyaz Ahmed Khan"

The asymmetric unit of the title compound, [Ru3(C19H17P)(C25H22P2)(CO)9], consists of two independent mol-ecules. The bis-(di-phenyl-phosphan-yl)methane ligand bridges an Ru-Ru bond and the benzyl-diphenyl-phosphane ligand binds to the third Ru atom. The Ru-Ru bond cis to the benzyl-diphenyl-phosphane ligand is the longest of the three Ru-Ru bonds in both mol-ecules.

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The title compound, [Os(3)(C(25)H(22)As(2))(CO)(10)], contains a triangle of singly bonded Os atoms; both arsine ligands are equatorial with respect to the Os(3) triangle. Each arsine-substituted Os atom bears one equatorial and two axial terminal carbonyl ligands, whereas the unsubstituted Os atom bears two equatorial and two axial terminal carbonyl ligands. The dihedral angles between the two benzene rings in the diphenyl-arsino groups are 67.

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In the title compound, [Ru(3)(C(6)H(12)Cl(3)O(3)P)(C(29)H(30)P(2))(CO)(9)], the bis-(di-o-tolyl-phosphan-yl)methane ligand bridges one Ru-Ru bond and the monodentate phosphite ligand bonds to the third Ru atom. Both ligands are equatorial with respect to the Ru(3) triangle. Each Ru atom bears one equatorial and two axial terminal carbonyl ligands.

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In the title solvated triangulo-triruthenium compound, [Ru(3)(C(18)H(15)O(3)P)(C(29)H(30)P(2))(CO)(9)]·2CHCl(3), the bis-(di-o-tolyl-phosphan-yl)methane (dtpm) ligand bridges one of the Ru-Ru bonds and the monodentate phosphine ligand bonds to the third Ru atom. All the P atoms are equatorial with respect to the Ru(3) triangle: each Ru atom also bears one equatorial and two axial terminal carbonyl ligands. The dihedral angles between the two benzene rings are 75.

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The asymmetric unit of title compound, C(36)H(27)As, contains two crystallographically independent mol-ecules, A and B, with similar conformations. The two phenyl rings of each biphenyl unit are twisted slightly away from each other with dihedral angles of 6.0 (2), 27.

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In the title compound, C(29)H(30)P(2), the dihedral angles between the two substituted benzene rings to the same P atom are 88.39 (7) and 83.88 (9)°.

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The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru(3)(C(25)H(22)P(2))(C(19)H(17)PS)(CO)(9)]·CH(2)Cl(2), contains one triangulo-triruthenium complex mol-ecule and one half-mol-ecule of the dichloro-methane solvent. The dichloro-methane solvent mol-ecule lies across a crystallographic inversion center leading to the mol-ecule being disordered over two positions of equal occupancy. The bis-(diphenyl-phosphan-yl)methane ligand bridges an Ru-Ru bond and the monodentate phosphane ligand bonds to the third Ru atom.

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In the title triangulo-triruthenium compound, [Ru(3)(C(36)H(27)As)(C(25)H(22)P(2))(CO)(9)], the bis-(diphenyl-phosphan-yl)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands.

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In the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(36)H(27)As)(CO)(9)], the bis-(diphenyl-arsan-yl)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both arsine ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands.

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The asymmetric unit of the title compound, [Ru(3)(C(29)H(30)P(2))(CO)(10)].1/8CH(3)OH, contains two triangulo-triruthenium mol-ecules with similar configurations and a methanol solvent mol-ecule (fractional site occupancy for the latter = 0.25).

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In the title compound, [Ru(3)(C(29)H(30)P(2))(C(19)H(17)PS)(CO)(9)]·0.25CH(2)Cl(2), the atoms of the dichloro-methane solvent mol-ecule have a fractional site occupancy of 0.25; the dichloro-methane mol-ecule is disordered about an inversion centre.

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In the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(19)H(17)PS)(CO)(9)], the bis-(diphenyl-arsanyl)methane ligand bridges an Ru-Ru bond and the monodentate phosphane ligand bonds to the third Ru atom. Both arsine and phosphane ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands.

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The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(26)H(24)P(2))(C(18)H(15)Sb)(CO)(9)], consists of two crystallographically independent mol-ecules, A and B. The bis-(diphenyl-phosphan-yl)ethane ligand bridges an Ru-Ru bond and the monodentate stibine ligand bonds to the third Ru atom. Both the stibine and phosphine ligands are equatorial with respect to the Ru(3) triangle.

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The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(21)H(21)AsO(3))(C(26)H(24)P(2))(CO)(9)]·CHCl(3), consists of one mol-ecule of the triangulo-triruthenium complex and one chloro-form solvent mol-ecule. The bis(diphenyl-phosphan-yl)ethane ligand bridges an Ru-Ru bond and the monodentate arsane ligand bonds to the third Ru atom. Both the arsane and phosphine ligands are equatorial with respect to the Ru(3) triangle.

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The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru(3)(C(25)H(22)As(2))(C(21)H(21)AsS(3))(CO)(9)]·CH(2)Cl(2), consists of one triangulo-triruthenium complex mol-ecule and one half of a dichloro-methane mol-ecule which lies across a crystallographic inversion center, leading to the disorder of this mol-ecule over two positions of equal occupancy. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom. All arsine ligands are equatorial with respect to the Ru(3) triangle.

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The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru(3)(C(21)H(21)AsS(3))(C(25)H(22)P(2))(CO)(9)]·CH(2)Cl(2), consists of one triangulo-triruthenium complex mol-ecule and one half of a dichloro-methane mol-ecule which lies across a crystallographic inversion center, leading to the disorder of this mol-ecule over two positions of equal occupancy. The bis-(diphenyl-phosphino)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru(3) triangle.

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The crystal structure of the title triangulo-triruthenium compound, [Ru(3)(C(21)H(21)AsS(3))(CO)(11)], confirms that during the synthesis one equatorial carbonyl ligand is substituted by a monodentate arsine ligand, leaving one equatorial and two axial carbonyl substituents on an Ru atom. The other two Ru atoms each carry two equatorial and two axial carbonyl ligands. The three arsine-substituted benzene rings make dihedral angles of 77.

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In the title compound, C(21)H(21)AsS(3), the three benzene rings make dihedral angles of 88.41 (10), 87.75 (9) and 74.

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In the title triangulo-triruthenium(0) compound, [Ru(3)(C(25)H(22)As(2))(C(6)H(12)Cl(3)O(3)P)(CO)(9)], the bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands.

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The asymmetric unit of the title triangulo-triruthenium cluster, [Ru(3)(C(25)H(22)As(2))(C(19)H(17)PS)(CO)(9)]·0.5CHCl(3), contains of one mol-ecule of the triangulo-triruthenium complex and half a mol-ecule of the disordered (two positions of equal weight) chloro-form solvent. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom.

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The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(20)H(19)O(2)P)(CO)(9)]·0.15CH(2)Cl(2), contains one mol-ecule of the triangulo-triruthenium complex and one partially occupied dichloro-methane solvent mol-ecule. The dichloro-methane solvent lies across a crystallographic inversion center leading to the mol-ecule being disordered over two positions of equal occupancy.

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The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(18)H(15)O(3)P)(CO)(9)], contains two crystallographically independent but similar mol-ecules. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphite ligand bonds to the third Ru atom. Both the phosphite and arsine ligands are equatorial with respect to the Ru(3) triangle.

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The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru(3)(C(25)H(22)As(2))(C(21)H(21)AsO(3))(CO)(9)]·CH(2)Cl(2), contains one triangulo-triruthenium complex mol-ecule and one half of the dichloro-methane solvent. The dichloro-methane solvent lies across a crystallographic inversion center leading to the mol-ecule being disordered over two positions of equal occupancy. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom.

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The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(18)H(14)BrP)(CO)(9)]·0.3CHCl(3), contains one mol-ecule of the triangulo-triruthenium complex and one partially occupied disordered chloro-form solvent mol-ecule. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom.

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The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(18)H(10)F(5)P)(CO)(9)]·CHCl(3), contains one mol-ecule of the triangulo-triruthenium complex and one mol-ecule of the disordered chloro-form solvent. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru(3) triangle.

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