Group VIII Fe, Ru, and Os

The reaction of HeAsIj with [NEtjH][(m-CO)(M-S BuS)Fe2(CO) ] results in the double cluster core complex [ (p-S Bu)(p-MeAs)Fea(CO)6)2] and its structure has been unambiguously established by X-ray diffraction studies. 

Phosphine-substituted hydrido-silyl complexes [FeH(SiR)3(CO)sL] have been prepared by carbonyl substitution in cis-[FeH(SiR3)(CO)4] thus for example, reaction of 1 equivalent of dppm with cis-[FeH(Si(0He)3 (CO)4] leads to mer-[FeH(Si(OHe)3)(CO)3(dppm-P)] and the reaction of cis-[FeH(SiPh3)(CO)4] with Ph2P(CH2)4PPh2 (dppb) leads to mer-[FeH(SiPh3)(CO)3(dppb-P)].  

6 Ruthenium and osmium earbonvl complexes. - Oxidative addition of RSH (R = H, alkyl, aryl) or RSSR (R == aryl) to [Ru(C0)sL2] (L = PPha) yields cis,cis,trans-[RuH(SR)(CO)2L2] or cis,cis,trans-[Ru(SR)2(C0)2L2] respectively. The reaction of [RuHCl(CO)(PPhs)3] with CH3CN in the presence of Na[BF4] enables [RuHCl(CO)(NCCH3)2(PPhs)2][BF4] to be isolated pure in 

8-diamlnonaphthalene) has been prepared by the reaction of [Ru3(C0)i2] with excess 1,8-diaminonaphthalene at llO C under a CO atmosphere this complex reacts with excess P(OMe)3 to yield the trisubstituted product [RU2(p-CioHaNs)(CO)3(P 0Me)3)3]. 

The monocarbonyl complex [ BU4N][OSX4(CO)(EtOH)], formed from the reaction of [ BU4N][OS2X8] (X = Cl, Br) with CO in ethanol, reacts with monodentate donors, L (L = DHSO, THF, CHsCN, py, PPhs, PEts, xylNC), by loss of ethanol to yield [ BU4N][OsX4(CO)L].Reduction of 

---