Abstract
The interaction of (Ph2PN=)C(Ph)[N(SiMe3)2] (L1) with one equivalent of Mn(CO)5Br afforded cis-Mn(CO)4Br-{(Ph2PN=)C(Ph)[N(SiMe3)2]} (1), which upon boiling in THF gave fac-Mn(CO)3Br[(Ph2PNH)C(Ph)(=NSiMe3)] (2), and with one equivalent of Re(CO)5X (X = Br or Cl) gave fac-Re(CO)3X[(Ph2PNH)C(Ph)(=NH)] [X = Br (3) or Cl (4)] in good yield. Reaction of 1,4-C6H4{C(=NPPh2)[N(SiMe3)2]}2(L2) with two equivalents of Mn(CO)5Br gave the symmetric dimer [cis-Mn(CO)4Br]2{(Ph2PN=)[N(SiMe3)2]C}2C6H4-1,4 (5), and with two equivalents of Re(CO)5Br gave the cyclic dimer cyclo-[fac-(Me2NCHO)Re(CO)3(μ-Ph2PO2)]2(6) upon recrystallization in DMF. Treatment of (NC5H4){(Ph2PN=)C[N(SiMe3)2]}-4 (L3) with one equivalent of (nbd)M(CO)4(M = Mo or Cr, nbd = norbornadiene) in THF produced cis-M(CO)4{(NC5H4)-[(Ph2PNH)C(=NSiMe3)]-4} [M = Mo (7) or Cr (8)], and with excess Mn(CO)5Br led to the trinuclear complex fac-{cis-Mn(CO)4Br[(NC5H4){(Ph2PN=)C[N(SiMe3)2]}-4]}2Mn(CO)3Br (9) in good yield. Compound 7, in the presence of CdCl2, hydrolyzed to cis-Mo(CO)4{(NC5H4)[(Ph2PNH)C(=NH)]-4} (10). Compound 8 reacted with half an equivalent of Mn(CO)5Br to give the trinuclear complex fac-[cis-Cr(CO)4{(NC5H4)[(Ph2PNH)C(=NSiMe3)]-4}]2Mn(CO)3Br (11). All the new compounds were characterized by spectroscopic and analytical methods and the structures of compounds 1, 3, 6, 9 and 10 were established by X-ray crystallography.
Original language | English |
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Pages (from-to) | 160-171 |
Number of pages | 12 |
Journal | Journal of Organometallic Chemistry |
Volume | 612 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 20 Oct 2000 |
Externally published | Yes |
Keywords
- Carbonyl
- Chromium
- Manganese
- Molybdenum
- Rhenium
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry