1,3,5‐Triamino‐1,3,5‐trideoxy‐cis‐inositol,a Ligand with a Remarkable Versatility for Metal Ions. Part XIII |
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Authors: | Kaspar Hegetschweiler Andr Egli Eberhardt Herdtweck WolfgangA Herrmann Roger Alberto Volker Gramlich |
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Abstract: | The two neutral complexes Re(CO)3(H?1taci)] ( 1 ) and ReO3(H?1taci)] ( 2 ) (taci=1,3,5‐triamino‐1,3,5‐trideoxy‐cis‐inositol) were synthesized from the conventional ReI and ReVII precursors (Et4N)2ReBr3(CO)3] and ReO3(OSnMe3)]. The crystal structures of 1 and 2 , which were determined by single crystal X‐ray analysis, are virtually isomorphous. Both compounds crystallize in the orthorhombic space group Pnma, Z=4; 1 : a=14.806(3), b=8.466(2), c=9.781(2) Å, 2 : a=13.050(2), b=8.732(1), c=9.061(1) Å. In both complexes, the monodeprotonated H?1taci ligand is bonded to the Re center in an N,O,N‐coordination mode. The resulting molecular Cs symmetry is retained in the crystal structure and confirmed by IR spectroscopy of solid‐state samples. The observed binding mode of the ligand is discussed in terms of steric and electronic effects. |
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