ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract The crystal structures of the title compounds have been determined from diffractometer data and refined by full-matrix least squares. NaAlMe4 is orthorhombic,Cmcm,a=9.234(3),b=9.221(3),c=8.303(2) Å,Z=4,D c=1.03 g cm−3,R=0.029 for 278 data. NaAlEt4 is monoclinic,P21/c (No. 14),a=13.900(2),b=13.207(2),c=14.443(1) Å,β=117.43(1)°,Z=8,D c=0.94 g cm−3,R=0.056 for 2747 data. NaAl(n-Pr)4 is monoclinic,C2/c,a=9.802(5),b=15.336(4),c=21.611(10) A,β=98.34(4)°,Z=8,D c=0.92 g cm−3,R=0.072 for 899 data. Coordination of Al is essentially tetrahedral in all structures, and closest contacts to Na+ involveα-carbon atoms of alkyl groups.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01181798
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