Investigations on the Reaction of Molybdenum Pentaobiloride and Chloroxtomolylbdenum Cohplexes with Sodium Azide
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Date
1984-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa Universty
Abstract
The reaction of MoC15 with NaN
3
in acetonitrile
followed by addition of OPPh3 resulted in the formation
of impure MOOC1
3
(OPFh)2 rather than the expected
nitrido analogue. NaN
3
acts here as a;reducing agent
generating a molybdenum(IV) chloride derivative which
was trapped as impure MoC14(Py)2~
The reaction of MoOC14 with acetonitrile or NaN3
produced a green solution containing an MOOC13(MeCN)2
COl'1plex which could not be isolated but trapped with
OPPh
3
and identified as MOOC13(OPPh3)2'. Addition of
NaN
3
to the green molybdenum oxotrichloride intermediate,
MOOC1
3
(MeCN)2 produced a deep violet solution, The
viole product could not be isolated but was inferred
to consist of [NaHMoOC13(N3)(MeCN)J, a loose adduct
of MoOC13(MeCN)2 and NaN
3
, Thus, addition of OPPh
3
to
the violet solution resulted in the formation of impure
MOOC1
3
(OPPh
3
)2' The violet intermediate obtained from
MOOC13(MeCN)2 and NaN3 is stable in acetonitrile but
decomposes in CH2C12 under evolution of N2 and reduction
yielding MOOC12(MeCN)3 as a brown crystalline product
which is sensitive to; 'hytirolyoiB. ~13(OPPh3)2 itselfr.eacts
slower Vii th NaN" in acetonitrile Hi th
:J
exchange yielding MOOC12(N
3
)(OPPh
3
)2'
Description
Keywords
Pentaobiloride and Chloroxtomolylbdenum Cohplexes