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1 1998

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Preparation, crystal structure and properties of (Ph4P)2ReCl6x2CH3CN

Małecka J., Jaeger L., Wagner Ch., Mroziński J.

Polish Journal of Chemistry

1998

Vol. 72, nr 8

1879-1885

(Ph4P)2ReCl6x2CH3CN 1 crystallizes as colourless single crystals from the acetonitrile solution of (Ph4P)2ReCl6 in ether. The crystals are monoclinic in space group P2-1/c with unit cell constants of a=9.550(1) A; b=19.724(3) A; c=15.033(2) A; beta=84.5(1)degree;V=2801.1(7) A(3); Z=2. In the octahedral anion the Re-Cl bond lengths are 2.368 A in average. the FIR region indicates two deformation bands delta(Cl-Re-Cl) at 162 cm(-1) (F-2g) and 175 cm(-1) (F-1u) and stretching band v(Re-Cl) at 309 cm(-1) (F-1u). For 1 very weak antiferromagnetic super-exchange is observed; the effective magnetic moment at room temprature is 3.57 B.M.