RT info:eu-repo/semantics/article T1 X-Ray Crystal Structures of Two Monopentamethylcyclopentadienylhafnium(IV) Complexes A1 Mena Montoro, Miguel A1 Pérez Redondo, Adrián A1 Varela Izquierdo, Víctor A1 Yélamos Sánchez, Carlos K1 Química K1 Chemistry AB The crystal structures of two monopentamethylcyclopentadienyl-hafnium(IV) derivatives have been determined by X-ray diffraction analysis. The [Hf(eta5-C5Me5)Cl3] complex (I) crystallizes as a dimer in the monoclinic space group C2/c with Z = 8. The structure of I is described as two {Hf(eta5-C5Me5)Cl2} units linked by two bridging chloride ligands. The [{Hf(eta5-C5Me5)Cl}3(mu-Cl)4(mu3-O)] complex (II) crystallizes in the monoclinic space group Cc with Z = 4. The structure of II is described as three {Hf(eta5-C5Me5)Cl} moieties connected by one or two bridging mu-chloride ligands and an additional mu3-oxide group. The hitherto unknown compound II has also been characterized by spectroscopic and analytical methods. In the solid state, the molecules of both derivatives are linked by C-H···Cl hydrogen bonds and C-H···pi interactions, providing an alternating layered pattern. SN 1063-7745 YR 2021 FD 2021-05-25 LK http://hdl.handle.net/10017/50660 UL http://hdl.handle.net/10017/50660 LA eng NO Universidad de Alcalá DS MINDS@UW RD 19-abr-2024