Synthesis and characterization of alkali-metal titanium alkoxide compounds MTi(O-i-Pr) sub 5 (M = Li, Na, K): Single-crystal x-ray diffraction structure of (LiTi(O-i-Pr) sub 5 ) sub 2

Journal Article · Wed Oct 03 00:00:00 EDT 1990 · Inorganic Chemistry; (USA)

DOI:https://doi.org/10.1021/ic00345a033· OSTI ID:6171028

Hampden-Smith, M J; Williams, D S ^[1]; Rheingold, A L ^[2]

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1. Univ. of New Mexico, Albuquerque (USA)
2. Univ. of Delaware, Newark (USA)

The series (MTi(O-iPr){sub 5}), M = Li, Na, or K, has been prepared by the reaction of MO-i-Pr with Ti(O-i-Pr){sub 4}. A single-crystal x-ray diffraction study revealed that (LiTi(O-i-Pr){sub 5}) crystallizes from toluene at {minus}30{degree}C in the monoclinic space group P2{sub 1}/n, with unit cell dimensions a = 11.440 (8) {angstrom}, b = 16.396 (13) {angstrom}, c = 11.838 (8) {angstrom}, {beta} = 92.59 (5){degree}, and Z = 4, as a dimer containing two approximately trigonal-bipyramidal titanium centers linked by lithium bridges. In benzene solution, all three compounds are dimeric, as revealed by cryoscopic molecular weight determination, and all three undergo an alkoxide ligand exchange process that is rapid on the {sup 1}H NMR time scale at room temperature. The positions of {nu}(M-O) are assigned based on the low-energy shifts observed upon deuteriation of the isopropoxide ligands. 23 refs., 3 figs., 3 tabs.

• OSTI ID: 6171028
• Journal Information: Inorganic Chemistry; (USA), Vol. 29:20; ISSN 0020-1669
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKOXIDES
CHEMICAL PREPARATION
LITHIUM COMPOUNDS
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
TITANIUM COMPOUNDS
CRYSTAL STRUCTURE
EXPERIMENTAL DATA
MONOCRYSTALS
X-RAY DIFFRACTION
ALKALI METAL COMPOUNDS
COHERENT SCATTERING
CRYSTALS
DATA
DIFFRACTION
INFORMATION
NUMERICAL DATA
SCATTERING
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties