1,3,5-Triamino-1,3,5-trideoxy-cis-inositol, a Ligand with a Remarkable Versatility for Metal Ions. Part XIII : Complex Formation with Rhenium(I) and Rhenium(VII)

✍ Scribed by Kaspar Hegetschweiler; André Egli; Eberhardt Herdtweck; Wolfgang A. Herrmann; Roger Alberto; Volker Gramlich

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: German
• Weight: 193 KB
• Volume: 88
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.200590027

✦ Synopsis

Abstract

The two neutral complexes [Re(CO)~3~(H~−1~taci)] (1) and [ReO~3~(H~−1~taci)] (2) (taci=1,3,5‐triamino‐1,3,5‐trideoxy‐cis‐inositol) were synthesized from the conventional Re^I^ and Re^VII^ precursors (Et~4~N)~2~[ReBr~3~(CO)~3~] and [ReO~3~(OSnMe~3~)]. 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~−1~taci ligand is bonded to the Re center in an N,O,N‐coordination mode. The resulting molecular C~s~ 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.