Wydział Chemii

R. Wanke

Piotr Smoleński

Silva M. Fátima. C. Guedes da

Luisa M. D. R. S. Martins

Armando J. L. Pombeiro

2008

Inorganic Chemistry

47

10158-10168

10.1021/ic801254b

Naukowa

Angielski

Artykuł

The new sterically hindered scorpionate tris(3-phenylpyrazolyl)methanesulfonate (Tpms^Ph)⁻ has been synthesized and its coordination behavior toward a Cu(I) center, in the presence of 1,3,5-triaza-7-phosphaadamantane (PTA), N-methyl-1,3,5-triaza-7-phosphaadamantane tetraphenylborate ((mPTA)[BPh₄]) or hexamethylenetetramine (HMT) has been studied. The reaction between Li(Tpms^Ph) (1) and [Cu(MeCN)₄][PF₆] yields [Cu(Tpms^Ph)(MeCN)] (2) which, upon further acetonitrile displacement on reaction with PTA, HMT, or (mPTA)[BPh₄], gives the corresponding complexes [Cu(Tpms^Ph)(PTA)] (3), [Cu(Tpms^Ph)(HMT)] (4), and [Cu(Tpms^Ph)(mPTA)][PF₆] (5). All the compounds have been characterized by ¹H, ³¹P, ¹³C, COSY or HMQC-NMR, IR, elemental analysis, and single crystal X-ray diffraction. In the complexes (3) and (5), which bear a phosphine ligand (i.e., PTA and mPTA, respectively), the new scorpionate ligand shows the typical N,N,N-coordination mode, whereas in (2) and (4), bearing a N-donor ligand (i.e., MeCN and HMT, respectively), it binds the metal via the N,N,O chelating mode, involving the sulfonate moiety.

https://doi.org/10.1021/ic801254b

https://www.acs.org/content/acs/en.html