Naslov
Molybdenum and tungsten cluster methoxides with bridging, terminal or mixed bridging-terminal methoxo groups: preparation and properties. Crystal structure of [Na(CH_3OH)_5]_2[Mo_6Br_8(OCH_3)_6]

Autori
Brničević, Nevenka ; Bašic, Ivan ; Hoxha Besnik ; Planinić, Pavica ; McCarley, Robert E.

Izvornik
Polyhedron (0277-5387) 22 (2003); 1553-1559

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Molybdenum clusters; Tungsten clusters; Bridging methoxides; bridging-terminal methixides

Sažetak
New cluster methoxides of molibdenum or tungsten of the composition [(M_6X_8^i)X_2^a(OCH_3)_4/2^a-a]• 2CH_3OH (M = Mo, W ; X = Cl, Br), [Mo_6X_8^i(OCH_3)_2^a(OCH_3)_4/2^a-a]• CH_3OH (X = Cl, Br) and [Na(CH_3OH)_5]_2[Mo_6Br_8^i(OCH_3)_6^a] with bridging, mixed bridging-terminal or terminal methoxo groups, respectively, have been prepared. The preparation procedures, spetroscopic and physical properties, including X-ray photoelectron spectra have been correlated. The crystal structure has been solved for [Na(CH_3OH)_5]_2[Mo_6Br_8(OCH_3)_6]. The compound crystallizes in the triclinic crystal system. The structure is built of two [Na(CH_3OH)_5]^+ cations and the [Mo_6Br_8(OCH_3)_6]^2- anion. All six oxygen atoms from coordinated methoxo groups are acceptors of hydrogen of coordinated methanol molecules from the six neighbouring cations making a three-dimensional packing network.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA