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Dynamic Gold(I) Complexes of Hexa‐ tert ‐butyl‐octaphosphane
Author(s) -
Grell Toni,
HeyHawkins Evamarie
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201901300
Subject(s) - chemistry , tetrahydrothiophene , bimetallic strip , ligand (biochemistry) , coordination complex , nuclear magnetic resonance spectroscopy , hexa , crystallography , coordination number , atom (system on chip) , stereochemistry , chelation , medicinal chemistry , ion , inorganic chemistry , metal , organic chemistry , biochemistry , receptor , computer science , embedded system
A facile synthesis for { cyclo ‐(P 4 t Bu 3 )} 2 ( 1 ) is reported making the phosphane available for follow‐up chemistry. Octaphosphane 1 reacts with [AuCl(tht)] (tht = tetrahydrothiophene) to give a monometallic {[AuCl( 1 ‐κ 2 P 2 , P 4' )], 2 }, bimetallic {[(AuCl) 2 ( 1 ‐κ 2 P 2 , P 4' ,κ P 2' )], 3 } and trimetallic complex {[(AuCl) 3 ( 1 ‐κ 2 P 2 , P 4' ,κ P 2' ,κ P 4 )], 4 } in which up to four phosphorus atoms of the ligand are involved in coordination. In each of these complexes one gold(I) atom is chelated in an unusual distorted T‐shaped coordination mode which undergoes a rapid exchange between both donor atoms in solution. This mode of coordination in combination with the flexibility of the phosphane ligand moreover gives rise to an interesting dynamic behavior of the monometallic complex 2 which was elucidated by NMR spectroscopy, X‐ray crystallography and DFT calculations.