ISSN:
1572-8854
Keywords:
Tetrahydro-aryl-4H-1,3,6,2-dioxazaboracine
;
H-bonding
;
B-N coordination
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Intramolecular B-N coordination occurs in tetrahydro-2-naphthyl-4H-1,3,6,2-dioxazaboracine, 2: (R = 2-naphthyl; R′ = H) both in the solid state and in CDCl3 solution. Compound 2: (R = 2-naphthyl; R′ = H) crystallizes in the orthorhombic space group P212121 (Z = 4), with a = 9.266(6), b = 11.034(8), c = 12.0635(10) Å. Molecules are linked, in the solid state, into spiral chains. As only one of the two oxygen atoms present in each molecule is involved in H-bonding, the boron and nitrogen centres are chiral. The intramolecular B-N bond length is 1.671(4) Å; other geometric parameters are B-O bond lengths of 1.448(4) and 1.464(4) Å, a B-C bond length of 1.598(4) Å, and bond angles at B between 100.6(3) and 115.4(3)°. The δ11B value for 2 (R = 2-naphthyl, R′ = H) at 25°C in CDCl3 solution is 10.7 ppm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022460124784
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