Di-μ-chlorido-bis-{[N,N'-dicyclo-hexyl-N'',N''-bis-(trimethyl-sil-yl)guanidinato-κN,N'](tetra-hydro-furan-κO)magnesium(II)}.

The dinuclear title complex, [Mg(2)(C(19)H(40)N(3)Si(2))(2)Cl(2)(C(4)H(8)O)(2)], lies on a center of inversion. The Mg(2+) ions are bonded to a chelating N,N'-bonded guanidinate anion, a tetra-hydro-furan mol-ecule and two bridging chloride anions. The geometry of the resulting five-coordinated Mg(2+) ion is a very distorted square-based pyramid with the O atom in the apical position.