Pyrazolato-Bridged Polynuclear Palladium and Platinum Complexes. Synthesis, Structure, and Reactivity

Cyclic trinuclear complexes [Pd3(μ-pz)6] (1) and [Pd3(μ-4-Mepz)6] (2) and dinuclear complex [Pd2(μ-3-t-Bupz)2(3-t-Bupz)2(3-t-BupzH)2] (3) have been prepared by the reactions of [PdCl2(CH3CN)2] with pyrazole (pzH), 4-methylpyrazole (4-MepzH), and 3-tert-butylpyrazole (3-t-BupzH), respectively, in CH3...

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Published in:Inorganic chemistry 2003-06, Vol.42 (12), p.3907-3916
Main Authors: Umakoshi, Keisuke, Yamauchi, Yoko, Nakamiya, Keiko, Kojima, Takashi, Yamasaki, Mikio, Kawano, Hiroyuki, Onishi, Masayoshi
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cited_by cdi_FETCH-LOGICAL-a450t-df25fe74880de2d27f1988bbf6092b0f13b989a4b759376421c4badbe0bf69133
cites cdi_FETCH-LOGICAL-a450t-df25fe74880de2d27f1988bbf6092b0f13b989a4b759376421c4badbe0bf69133
container_end_page 3916
container_issue 12
container_start_page 3907
container_title Inorganic chemistry
container_volume 42
creator Umakoshi, Keisuke
Yamauchi, Yoko
Nakamiya, Keiko
Kojima, Takashi
Yamasaki, Mikio
Kawano, Hiroyuki
Onishi, Masayoshi
description Cyclic trinuclear complexes [Pd3(μ-pz)6] (1) and [Pd3(μ-4-Mepz)6] (2) and dinuclear complex [Pd2(μ-3-t-Bupz)2(3-t-Bupz)2(3-t-BupzH)2] (3) have been prepared by the reactions of [PdCl2(CH3CN)2] with pyrazole (pzH), 4-methylpyrazole (4-MepzH), and 3-tert-butylpyrazole (3-t-BupzH), respectively, in CH3CN in the presence of Et3N. In the absence of the base, treatment of [PdCl2(CH3CN)2] with pzH gave the mononuclear complex, [Pd(pzH)4]Cl2 (6). The reaction of [PtCl2(C2H5CN)2] with pzH in the presence of Et3N under refluxing in C2H5CN afforded the known dimeric Pt(II) complex, [Pt(pz)2(pzH)2]2 (7). The protons participating in the hydrogen bonding in 3 and 7 are easily replaced by silver ions to give the heterotetranuclear complex [Pd2Ag2(μ-3-t-Bupz)6] (4) and the heterohexanuclear complex [Pt2Ag4(μ-pz)8] (5). The complexes 1−6 are structurally characterized.
doi_str_mv 10.1021/ic026196g
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The reaction of [PtCl2(C2H5CN)2] with pzH in the presence of Et3N under refluxing in C2H5CN afforded the known dimeric Pt(II) complex, [Pt(pz)2(pzH)2]2 (7). The protons participating in the hydrogen bonding in 3 and 7 are easily replaced by silver ions to give the heterotetranuclear complex [Pd2Ag2(μ-3-t-Bupz)6] (4) and the heterohexanuclear complex [Pt2Ag4(μ-pz)8] (5). 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Synthesis, Structure, and Reactivity</atitle><jtitle>Inorganic chemistry</jtitle><addtitle>Inorg. Chem</addtitle><date>2003-06-16</date><risdate>2003</risdate><volume>42</volume><issue>12</issue><spage>3907</spage><epage>3916</epage><pages>3907-3916</pages><issn>0020-1669</issn><eissn>1520-510X</eissn><abstract>Cyclic trinuclear complexes [Pd3(μ-pz)6] (1) and [Pd3(μ-4-Mepz)6] (2) and dinuclear complex [Pd2(μ-3-t-Bupz)2(3-t-Bupz)2(3-t-BupzH)2] (3) have been prepared by the reactions of [PdCl2(CH3CN)2] with pyrazole (pzH), 4-methylpyrazole (4-MepzH), and 3-tert-butylpyrazole (3-t-BupzH), respectively, in CH3CN in the presence of Et3N. In the absence of the base, treatment of [PdCl2(CH3CN)2] with pzH gave the mononuclear complex, [Pd(pzH)4]Cl2 (6). The reaction of [PtCl2(C2H5CN)2] with pzH in the presence of Et3N under refluxing in C2H5CN afforded the known dimeric Pt(II) complex, [Pt(pz)2(pzH)2]2 (7). 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title Pyrazolato-Bridged Polynuclear Palladium and Platinum Complexes. Synthesis, Structure, and Reactivity
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