Reactions of osmium coordinated formaldehyde. Synthesis of complexes of selenoformaldehyde and telluroformaldehyde |
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| Authors: | CEL Headford WR Roper |
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| Institution: | Department of Chemistry, University of Auckland, Auckland New Zealand |
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| Abstract: | Os(η2-CH2O)(CO)2(PPh3)2 reacts with CSe2 to form a metallacycle O]Se)(CO)2(PPh3)2. This compound breaks down to Os(η2-CH2Se)(CO)2(PPh3)2 with probable loss of COSe. An alternative route to Os(η2-CH2Se)(CO)2(PPh3)2 and also Os(η2-CH2Te)(CO)2(PPh3)2 is through reaction of Os(CH2I)I(CO)2(PPh3)2 with SeH? and TeH?, respectively. HCl with Os(η2-CH2E)(CO)2(PPh3)2 (E = Se or Te) gives OsCl(EMe)(CO)2(PPh3)2 while methyl iodide gives Os(η2-CH2EMe)(CO)2 - (PPh3)2] I. BH4? reacts with these cations to cleave the CE bond and form Os(CH3)(EMe)(CO)2(PPh3)2. |
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