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Reactions of [(mu-H)Os-3(CO)(10)(mu-OMe)] and [(mu-H)Os-3(CO)9(mu-OMe)(MeCN)] with dppm, dppe, dppp, and PPh2H: X-ray crystal structures of [(mu-H)Os-3(CO)8(mu-OMe)-(mu(2)-eta(2)-dppm)] and [(mu-H)Os-3(CO)(9)(mu-OMe)(PPh2H)]

Kabir, SE ; Mottalib, MA ; Hossain, GMG ; Nordlander, Ebbe LU and Rosenberg, E (2006) In Polyhedron 25(1). p.95-104
Abstract
Treatment of [(mu-H)Os-3(CO)(10)(mu-OMe)] (1) with dppm {dppm = bis(diphenylphosphino)methane} at 110 degrees C gave the known compound [Os-3(CO)(10)(mu(2)-eta(2)-dppm)] (2) and the new compound [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppm)] (3). A similar reaction of 1 with dppe {dppe=bis(diphenylphosphino)ethane} afforded two products, [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(1)-eta(2)-dppe)] (5) and [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppe)] (6) which differ in the mode of bonding of the dppe ligand. The reaction of 1 with dppp {dppp = bis(diphenylphosphino)propane} at 110 degrees C gave exclusively [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppp)] (7) which exists as two isomers in solution. Compounds 2, 3, and 5-7 are also obtained in almost... (More)
Treatment of [(mu-H)Os-3(CO)(10)(mu-OMe)] (1) with dppm {dppm = bis(diphenylphosphino)methane} at 110 degrees C gave the known compound [Os-3(CO)(10)(mu(2)-eta(2)-dppm)] (2) and the new compound [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppm)] (3). A similar reaction of 1 with dppe {dppe=bis(diphenylphosphino)ethane} afforded two products, [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(1)-eta(2)-dppe)] (5) and [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppe)] (6) which differ in the mode of bonding of the dppe ligand. The reaction of 1 with dppp {dppp = bis(diphenylphosphino)propane} at 110 degrees C gave exclusively [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppp)] (7) which exists as two isomers in solution. Compounds 2, 3, and 5-7 are also obtained in almost similar yields from reactions of [(mu-H)Os-3(CO)(8)(mu-OMe)(MeCN)] (4) with the appropriate diphosphine at ambient temperature. The reaction of 1 with PPh2H at 110 degrees C gave the new compounds [(mu-H)Os-3(CO)(9)(mu-OMe)(PPh2H)] (8) and [(mu-H)Os-3(CO)(7)(mu-PPh2)(2)(PPh2H)](10) and the previously reported compound [(mu-H)Os-3(CO)(8)(mu-OMe)(PPh2H)] (9). The molecular structures of 3 and 8 were determined by single crystal X-ray diffraction. In compound 3, the dppm ligand bridges the same Os-Os edge as the hydride and the methoxide ligand. In 8, the PPhH ligand occupies a 'pseudo' axial site on one of the osmium atoms bearing the bridging hydride and methoxide ligand. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
structures, crystal, methoxide, diphenylphosphine, osmium carbonyl, diphosphine
in
Polyhedron
volume
25
issue
1
pages
95 - 104
publisher
Elsevier
external identifiers
  • wos:000234576500013
  • scopus:29144485799
ISSN
0277-5387
DOI
10.1016/j.poly.2005.07.004
language
English
LU publication?
yes
id
17c1d1c9-8dfe-45f9-bbe0-21b9afa9b6bd (old id 420040)
date added to LUP
2016-04-01 15:51:28
date last changed
2020-01-12 18:48:04
@article{17c1d1c9-8dfe-45f9-bbe0-21b9afa9b6bd,
  abstract     = {Treatment of [(mu-H)Os-3(CO)(10)(mu-OMe)] (1) with dppm {dppm = bis(diphenylphosphino)methane} at 110 degrees C gave the known compound [Os-3(CO)(10)(mu(2)-eta(2)-dppm)] (2) and the new compound [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppm)] (3). A similar reaction of 1 with dppe {dppe=bis(diphenylphosphino)ethane} afforded two products, [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(1)-eta(2)-dppe)] (5) and [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppe)] (6) which differ in the mode of bonding of the dppe ligand. The reaction of 1 with dppp {dppp = bis(diphenylphosphino)propane} at 110 degrees C gave exclusively [(mu-H)Os-3(CO)(8)(mu-OMe)(mu(2)-eta(2)-dppp)] (7) which exists as two isomers in solution. Compounds 2, 3, and 5-7 are also obtained in almost similar yields from reactions of [(mu-H)Os-3(CO)(8)(mu-OMe)(MeCN)] (4) with the appropriate diphosphine at ambient temperature. The reaction of 1 with PPh2H at 110 degrees C gave the new compounds [(mu-H)Os-3(CO)(9)(mu-OMe)(PPh2H)] (8) and [(mu-H)Os-3(CO)(7)(mu-PPh2)(2)(PPh2H)](10) and the previously reported compound [(mu-H)Os-3(CO)(8)(mu-OMe)(PPh2H)] (9). The molecular structures of 3 and 8 were determined by single crystal X-ray diffraction. In compound 3, the dppm ligand bridges the same Os-Os edge as the hydride and the methoxide ligand. In 8, the PPhH ligand occupies a 'pseudo' axial site on one of the osmium atoms bearing the bridging hydride and methoxide ligand.},
  author       = {Kabir, SE and Mottalib, MA and Hossain, GMG and Nordlander, Ebbe and Rosenberg, E},
  issn         = {0277-5387},
  language     = {eng},
  number       = {1},
  pages        = {95--104},
  publisher    = {Elsevier},
  series       = {Polyhedron},
  title        = {Reactions of [(mu-H)Os-3(CO)(10)(mu-OMe)] and [(mu-H)Os-3(CO)9(mu-OMe)(MeCN)] with dppm, dppe, dppp, and PPh2H: X-ray crystal structures of [(mu-H)Os-3(CO)8(mu-OMe)-(mu(2)-eta(2)-dppm)] and [(mu-H)Os-3(CO)(9)(mu-OMe)(PPh2H)]},
  url          = {http://dx.doi.org/10.1016/j.poly.2005.07.004},
  doi          = {10.1016/j.poly.2005.07.004},
  volume       = {25},
  year         = {2006},
}