Synthesis, structure, and reactivity of heterometallic polyhydride complexes of rhenium with yttrium and lutetium

Journal Article · Tue Dec 22 23:00:00 EST 1992 · Inorganic Chemistry; (United States)

DOI:https://doi.org/10.1021/ic00052a028· OSTI ID:7070174

Alvarez, D Jr; Caulton, K G ^[1]; Evans, W J; Ziller, J W ^[2]

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1. Indiana Univ., Bloomington (United States)
2. Univ. of California, Irvine (United States)

Yttrium and lutetium methyl complexes readily react with rhenium hydride compounds to eliminate methane and form heterometallic polyhydride complexes. The complexes (C[sub 5]H[sub 5])[sub 2]LnMe(THF) (Ln = Y, Lu) react with ReH[sub 7](PPh[sub 3])[sub 2] and ReH[sub 5](PMe[sub 2]Ph)[sub 3] to form (C[sub 5]H[sub 5])[sub 2]Ln(THF)H[sub 6]Re(PPh[sub 3])[sub 2] and (C[sub 5]H[sub 5])[sub 2]Ln(THF)H[sub 4]Re(PMe[sub 2]Ph)[sub 3]. Both 1 and 2 exist as molecular species containing bridging hydride ligands. In each case, the geometry around each metal resembles that in analogous monometallic systems with some distortions arising from steric crowding. The complexes (C[sub 5]H[sub 5])[sub 2]LnMe(THF) (Ln = Y, Lu) also react with Re[sub 2]H[sub 8](PMe[sub 2]Ph)[sub 4] in THF to form (C[sub 5]H[sub 5])[sub 2]Y(THF)H[sub 7]Re[sub 2](PMe[sub 2]Ph)[sub 4], 3, and (C[sub 5]H[sub 5])[sub 2]LuH[sub 7]Re[sub 2](PMe[sub 2]Ph)[sub 4], 4. Complex 3 is a fluxional molecule which contains an open L-shaped YRe[sub 2] unit. Complex 4 contains a closed triangular LuRe[sub 2] core which will not add THF. THF can be removed from 3 to form an yttrium analog of 4. The bimetallic complex 1 is unreactive toward CO, CO[sub 2], and PhC[triple bond]CPh but is highly reactive toward olefin polymerization. In contrast, the trimetallic complexes (C[sub 5]H[sub 5])[sub 2]LnH[sub 7]Re[sub 2](PMe[sub 2]Ph)[sub 4] are reactive toward CO and CO[sub 2] but unreactive with ethylene. 40 refs., 6 figs., 5 tabs.

• OSTI ID: 7070174
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:26; ISSN 0020-1669; ISSN INOCAJ
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKENES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
HOMOGENEOUS CATALYSIS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
LATTICE PARAMETERS
LUTETIUM COMPOUNDS
LUTETIUM HYDRIDES
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOSPHINES
PHOSPHORUS COMPOUNDS
POLYMERIZATION
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
RHENIUM COMPOUNDS
RHENIUM HYDRIDES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM HYDRIDES