Formation and molecular structure of the novel-six coordinate aminoalane complex (((CH/sub 3/)/sub 3/Si)/sub 2/Al(NH/sub 2/)/sub 2/)/sub 3/Al
Journal Article
·
· Inorg. Chem.; (United States)
Reaction of ((CH/sub 3)//sub 3/Si)/sub 3/Al/center dot/O(C/sub 2/H/sub 5/)/sub 2/ and NH/sub 3/ in a 1:2 ratio results in the formation of (((CH/sub 3/)/sub 3/Si)/sub 2/Al(NH/sub 2/)/sub 2/)/sub 3/Al. The compound was characterized by elemental analysis, mass, infrared, and NMR spectroscopic data, and a single-crystal x-ray diffraction analysis. The compound crystallizes in the monoclinic space group C2/c with a = 13.981 (2) /angstrom/, b = 14.064 (2) /angstrom/, c = 23.025 (2) /angstrom/, /beta/ = 106.2 (1)/degree/, Z = 4, V = 4,347 (1) /angstrom//sup 3/, and /rho/ = 0.98 g cm/sup /minus/3/. Least-squares refinement gave R/sub F/ = 9.56% and R/sub wF/ = 7.37% on 2,504 reflections with F /ge/ 3/sigma/(F). The molecular structure shows a central six-coordinate, pseudooctahedral Al atom bonded to three bidentate aminosilyl aluminum ligands, (((CH/sub 3/)/sub 3/Si)/sub 2/(NH/sub 2/)/sub 2//sup /minus//). The average central Al-N(H)/sub 2/ distance is 2.020 (5) /angstrom/, and the average Al-N(H)/sub 2/ distance in the ligands units is 1.932 (5) /angstrom/. Pyrolysis of this molecular species provides a mixture of AlN and SiC. 11 refs., 1 fig., 3 tabs.
- Research Organization:
- Univ. of New Mexico, Albuquerque (USA)
- DOE Contract Number:
- FG05-86ER75294
- OSTI ID:
- 5775841
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 27:24; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALKANES
ALUMINIUM COMPLEXES
AMINES
BARYONS
CARBON 13
CARBON ISOTOPES
CHEMICAL PREPARATION
COMPLEXES
DATA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
HADRONS
HYDROCARBONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MOLECULAR STRUCTURE
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ORGANIC COMPOUNDS
PROTONS
SILICON COMPLEXES
SPECTRA
STABLE ISOTOPES
SYNTHESIS
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALKANES
ALUMINIUM COMPLEXES
AMINES
BARYONS
CARBON 13
CARBON ISOTOPES
CHEMICAL PREPARATION
COMPLEXES
DATA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
HADRONS
HYDROCARBONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MOLECULAR STRUCTURE
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ORGANIC COMPOUNDS
PROTONS
SILICON COMPLEXES
SPECTRA
STABLE ISOTOPES
SYNTHESIS