Structural investigations on bismuth–thiourea derivative adducts: crystal structures of tetra[1-allyl-3-(2-pyridyl)thiourea-S]di-µ-chloro-tetrachlorodibismuth( III ) and hexa[1-allyl-3-(2-pyridyl)thiourea-S]bismuth( III ) nitrate
1981; Royal Society of Chemistry; Issue: 1 Linguagem: Inglês
10.1039/dt9810000023
ISSN2050-5671
AutoresL. P. BATTAGLIA, Anna Bonamartini Corradi,
Tópico(s)Metal complexes synthesis and properties
ResumoThe crystal structures of [{BiCl3(aptu)2}2](1)[aptu = 1-allyl-3-(2-pyridyl)thiourea-S] and of [Bi(aptu)6][NO3]3(2) have been determined from three-dimensional X-ray data and refined by least-squares methods to R= 0.056 and 0.092 respectively. Both crystals are triclinic with unit-cell dimensions: (1), a= 12.903(10), b= 11.084(10), c= 9.739(10)Å, α= 109.8(1), β= 97.5(1), γ= 107.3(1)°, Z= 1, space group P; (2), a= 13.104(10), b= 15.296(10), c= 11.591(10)Å, α= 126.7(1), β= 109.1(1), γ= 92.4(1)°, Z= 1, pace group P. The structure of (1) consists of a binuclear centrosymmetric neutral complex, in which each bismuth atom is surrounded by two sulphurs of the ligand molecules and two chlorine atoms; two other chlorines, forming asymmetrical bridges, complete the distorted octahedral co-ordination. In (2)[Bi(aptu)6]3+ and NO3– ions are present. The heavy atom, lying on the centre of symmetry at the origin of the cell, is surrounded by six sulphur atoms from aptu molecules which are arranged in approximate symmetry to give a distorted octahedral co-ordination.
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