The Molecular Structures of (t-Butyl)(chloro)[(−)-sparteine]magnesium(II) and Dichloro[(−)-sparteine]magnesium(II)
- 1 August 1983
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 56 (8) , 2411-2414
- https://doi.org/10.1246/bcsj.56.2411
Abstract
Crystals of t-BuMgCl–(−)-sparteine (1) belongs to orthorhombic system; P212121, a=25.689(6), b=10.030(2), c=7.942(2) Å, and Z=4; MgCl2–(−)-sparteine (2) also crystallizes in orthorhombic system; P212121, a=11.180(4), b=11.957(4), c=12.573(5) Å, and Z=4. Both structures were solved by the heavy atom method, and refined by the block-diagonal least-squares procedure; (1) R=0.098 for 1199 non-zero reflections and (2) R=0.091 for 1347 observed reflections. The Mg atom in each complex has a distorted tetrahedral geometry: (1) Mg–N=2.17(2) and 2.18(2), Mg–C=2.19(2), and Mg–Cl=2.332(7) Å and N–Mg–N=83.9(5)°; (2) Mg–N=2.150(9) and 2.160(9), and Mg–Cl=2.269(5) and 2.279(6) Å, and N–Mg–N=85.0(4)°.Keywords
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