Models for organometallic polymers. Zigzag chains of Mo sub 2 (O sub 2 CCH sub 3 ) sub 4 units linked by DMPE and TMED ligands

Journal Article · Wed Apr 04 04:00:00 EDT 1990 · Inorganic Chemistry; (USA)

DOI:https://doi.org/10.1021/ic00332a006· OSTI ID:6835563

Kerby, M C; Eichhorn, B W; Creighton, J A ^[1]; Vollhardt, K P.C. ^[2]

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1. Exxon Research and Engineering Co., Annandale, NJ (USA)
2. Univ. of California, Berkeley (USA)

Infinite zigzag chains of Mo{sub 2}(O{sub 2}CCH{sub 3}){sub 4} units linked by the bidentate ligands 1,2-bis(dimethylphosphino)ethane (dmpe) and tetramethylethylenediamine (tmed) crystallize from solutions of Mo{sub 2}(O{sub 2}CCH{sub 3}){sub 4} (1) dissolved in the respective neat ligand. Single-crystal X-ray structures of the light yellow polymers {sub {infinity}}{sup 1}(Mo{sub 2}(O{sub 2}CCH{sub 3}){sub 4}(dmpe)) and (2) and {sub {infinity}}{sup 1}(Mo{sub 2}(O{sub 2}CCH{sub 3}){sub 4}(tmed)) (3) showed that the compounds were isostructural. Crystal structures for compounds 2 and 3 reported. The ligands dmpe and tmed are coordinated axially through weak Mo-L bonds to relatively unperturbed Mo{sub 2}(O{sub 2}CCH{sub 3}){sub 4} centers. The solid-state Raman spectrum of 3 reveals a small decrease in the Mo-Mo stretching frequency ({nu}{sub Mo-Mo} = 391 cm{sup {minus}1}) relative to 1 ({nu}{sub Mo-Mo} = 405 cm{sup {minus}1}). TGA and powder diffraction studies involving 3 showed that solid-state thermolysis results in the expulsion of tmed at 92{degree}C and the formation of crystalline 1. 25 refs., 3 figs., 6 tabs.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6835563
• Journal Information: Inorganic Chemistry; (USA), Journal Name: Inorganic Chemistry; (USA) Vol. 29:7; ISSN 0020-1669; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKENES
AMINES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
DATA
ETHYLENE
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
MOLYBDENUM COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
POLYMERS
REFRACTORY METAL COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS