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Title	Synthesis and structural characterization of the heterometallic clusters cpcofe(2)(mu(3)-se)(2)(co)(6) and cpcofe(2)(mu(3)-s)(mu(3)-se)(co)(6)

Names	MATHUR, P (author) SEKAR, P (author) SATYANARAYANA, CVV (author) MAHON, MF (author)
Date Issued	1995 (iso8601)
Abstract	The heterometallic clusters CpCoFe(2)(mu(3)-Se)(2)(CO)(6) (1) and CpCoFe(2)(mu(3)-S)(mu(3)-Se)(CO)(6) (2) were prepared in moderate yield from the room-temperature reaction of the mixed-chalcogenide compound (CO)(6)Fe-2(mu-SSe) with freshly prepared CpCo(CO)(2). Both clusters were characterized by elemental analysis, IR, and H-1, C-13, and Se-77 NMR as well as X-ray diffraction analysis. Compound I crystallized in the triclinic space group P ($) over bar 1, with a = 6.638(1) Angstrom, b = 14.675(4) Angstrom, c = 17.844(7) Angstrom, alpha = 111.37(3)degrees, beta = 100.80(2)degrees, gamma = 89.88(2)degrees, V = 1585.9 Angstrom(3), Z = 4, D-c = 2.35 g cm(-3), R = 3.85% and R(w) = 3.12%. Compound 2 crystallized in the monoclinic space group C2/c with a = 34.994(10) Angstrom, b = 6.599(2) Angstrom, c = 14.766(5) Angstrom, beta = 111.95(3)degrees, V = 3162.7 Angstrom(3), Z = 8, D-c = 2.16 g cm(-3), R = 3.51%, and R(w) = 3.26%. Both clusters consist of square pyramidal cores of Fe2CoSe2 and Fe2CoSSe, respectively, and in each case the Co atom occupies the apical site of the square pyramid.
Genre	Note
Topic	chalcogen carbonyl-compounds
Identifier	0276-7333
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