Abstract: Reaction of diethylacetylene dicarboxylate
(EtO_{2}CC≡CCO_{2}Et) with
trans-(N_{3})_{2}Ru(PMe_{3})_{4}
in THF at 25°C gave the bis-triazolato complex
(PMe_{3})_{3}Ru[N_{3}C_{2}-(CO_{2}Et)_{2}]_{2}
(1) in 41% yield. Reaction of
trans-(N_{3})_{2}Ru(PMe_{3})_{4}
with phenylacetylene in toluene at 110^{\circ}C gave the
mixed azide acetylide complex
cis-(PMe_{3})_{4}Ru(N_{3})(C≡CC_{6}H_{5})
(2) (51%. The analogous alkynyl acetylide
cis-(PMe_{3})_{4}Ru(N_{3})(C≡CC_{6}H_{4}C≡
CH) (3) is formed from 1,4-diethynylbenzene in 72% yield. Reaction of
trans-(N_{3})_{2}Ru(PMe_{3})_{4}
with HC≡CSiMe_{3} in
CH_{2}Cl_{2} at 41°C gave
trans-(PMe_{3})_{4}Ru[C≡
C(SiMe_{3})]_{2} (4) (37%. A similar
reaction in toluene at 110°C gave the dinuclear azide
[(PMe_{3})_{3}(N_{3})Ru]_{2}(μ_{1,3}-
N_{3})_{2} (5) (30%
3,5-bis(trifluoromethyl)pyrazole (PzH) with
trans-(N_{3})_{2}Ru(PMe_{3})_{4}
in refluxing toluene gave
[(PMe_{3})_{3}Ru]_{2}(μ_{1}-N_{3})_{3}][Pz·
2PzH (6). Complexes 1–6 have been characterized spectroscopically as well
as by single crystal X-ray diffraction studies.
