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Control of the Coordination Geometry Around Platinum by a Supramolecular Capsule
Author(s) -
Koblenz Tehila S.,
Dekker Henk L.,
de Koster Chris G.,
van Leeuwen Piet W. N. M.,
Reek Joost N. H.
Publication year - 2011
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.201100809
Subject(s) - chemistry , platinum , xantphos , supramolecular chemistry , capsule , coordination geometry , ligand (biochemistry) , coordination complex , calixarene , stereochemistry , crystallography , catalysis , metal , crystal structure , molecule , organic chemistry , palladium , hydrogen bond , botany , receptor , biochemistry , biology
The coordination geometry around a platinum atom can be controlled by a diphosphane capsule composed of a tetracationic xantphos‐type ligand and a tetraanionic calix[4]arene. Reaction of the diphosphane capsule with the platinum precursor [PtCl 2 (MeCN) 2 ] yields the bisligated biscalix[4]arene trans ‐platinum capsule, whereas the same diphosphane in the absence of calix[4]arene prefers the formation of the monoligated cis ‐platinum complex, as indicated by 31 P{ 1 H} NMR and ESI‐MS. The two calix[4]arenes stabilize the kinetic product ( trans ‐Pt), and slow the formation of the thermodynamic product ( cis ‐Pt).