The chiral configuration of the title diastereoisomer, ε-L1, has been ascertained by the X-ray crystal-structure determination of its cobalt(II) complex [Co(ε-L1)][BPh4]2·EtOH. The complex crystallises in the monoclinic space group P21/c, with a= 14.590(3), b= 13.004(3), c= 40.972(9)Å, β= 91.80(4)°, and Z= 4. Least-squares refinement gave R= 0.114 for 1 241 observed reflections. The cobalt atom is six-co-ordinated by two sulphur and four phosphorus atoms of the macrocycle forming a distorted cis-octahedral geometry. The nickel complexes are attributed a similar stereochemistry on the basis of their electronic spectra. The stereochemistry of the cobalt and nickel complexes of γ-L1 has been investigated by electronic spectroscopy. The γ-L1 isomer behaves as a quadridentate tetraphosphane ligand, the two sulphur atoms being unco-ordinated.

Ciampolini, M., Nardi, N., Orioli, P.L., Mangani, S., Zanobini, F. (1985). Macrocyclic Polyphosphane Ligands - Cobalt(ii) and Nickel(ii) Complexes of the Gamma-diastereoisomers and Epsilon-diastereoisomers of 4,7,13,16-tetraphenyl-4,7,13,16-tetraphospha-1,10-dithiacyclo-octadecane (l1) and the Crystal-structure of [co(epsilon-l1)][bph4]2.etoh. JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS, 7, 1425-1429 [10.1039/dt9850001425].

Macrocyclic Polyphosphane Ligands - Cobalt(ii) and Nickel(ii) Complexes of the Gamma-diastereoisomers and Epsilon-diastereoisomers of 4,7,13,16-tetraphenyl-4,7,13,16-tetraphospha-1,10-dithiacyclo-octadecane (l1) and the Crystal-structure of [co(epsilon-l1)][bph4]2.etoh

Mangani, Stefano;
1985-01-01

Abstract

The chiral configuration of the title diastereoisomer, ε-L1, has been ascertained by the X-ray crystal-structure determination of its cobalt(II) complex [Co(ε-L1)][BPh4]2·EtOH. The complex crystallises in the monoclinic space group P21/c, with a= 14.590(3), b= 13.004(3), c= 40.972(9)Å, β= 91.80(4)°, and Z= 4. Least-squares refinement gave R= 0.114 for 1 241 observed reflections. The cobalt atom is six-co-ordinated by two sulphur and four phosphorus atoms of the macrocycle forming a distorted cis-octahedral geometry. The nickel complexes are attributed a similar stereochemistry on the basis of their electronic spectra. The stereochemistry of the cobalt and nickel complexes of γ-L1 has been investigated by electronic spectroscopy. The γ-L1 isomer behaves as a quadridentate tetraphosphane ligand, the two sulphur atoms being unco-ordinated.
1985
Ciampolini, M., Nardi, N., Orioli, P.L., Mangani, S., Zanobini, F. (1985). Macrocyclic Polyphosphane Ligands - Cobalt(ii) and Nickel(ii) Complexes of the Gamma-diastereoisomers and Epsilon-diastereoisomers of 4,7,13,16-tetraphenyl-4,7,13,16-tetraphospha-1,10-dithiacyclo-octadecane (l1) and the Crystal-structure of [co(epsilon-l1)][bph4]2.etoh. JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS, 7, 1425-1429 [10.1039/dt9850001425].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/40591
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