REACTION OF (MU-H)2OS3(CO)10 WITH (ETA-5-C5H5)(CO)2W=CC6H4CH3 - CRYSTAL-STRUCTURE OF (ETA-5-C5H5)WOS3(CO)11[C(O)CH2C6H4CH3]-APPROXIMATELY 0.5CCL4, A COMPLEX WITH A TRIPLY BRIDGING (MU-3,ETA-2) ACYL LIGAND ON THE SURFACE OF A TRIANGULATED RHOMBOIDAL METAL CLUSTER