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- W1998377129 abstract "The reactivity of the d8 transition metal complexes, [NiBr2(CH3OCH2CH2OCH3)] and MCl2L2 (M=Pd, Pt; L=CH3CN; L2=1,5-cyclooctadiene), towards P(C6H5)(C6H4Cl-2)2 (1) was investigated. While treatment of [PdCl2(cod)] with 2 equiv of 1 resulted in displacement of the weakly coordinating cyclooctadiene and formation of [PdCl2(P(C6H5)(C6H4Cl-2)2)2], analogous reactions with [PtCl2(cod)] afforded the monosubstituted species [PtCl2(cod)(P(C6H5)(C6H4Cl-2)2)]. The disubstituted complex [PtCl2(P(C6H5)(C6H4Cl-2)2)2] was successfully obtained by treatment of [PtCl2(NCCH3)2] with 2 equiv of 1. However, attempts to react 1 with [NiBr2(CH3OCH2CH2OCH3)] were unsuccessful. The chlorinated triphenyl phosphine is quite labile and is readily displaced from [PdCl2(P(C6H5)(C6H4Cl-2)2)2] by various Lewis bases including nitrogen containing ligands such as 2,2′-bipyridine. The molecular structure of trans-[PdCl2(P(C6H5)(C6H4Cl-2)2)2] was determined by X-ray diffraction and represents the first molecular structure determination of a transition metal complex containing 1. This complex crystallizes in the monoclinic space group P21/n with a=10.3928(3) Å, b=16.0102(4) Å, c=13.1884(4) Å, β=90.714(2)°, and Z=4. Key geometric parameters include PdCl(1)=2.309(1) Å, PdP(1)=2.334(1) Å; PdP(1)C(7)=118.3(2)°, PdP(1)C(1)=115.3(2)°, C(1)C(6)Cl(2)=120.7(4)° and Cl(1)PdP(1)=85.86(4)°." @default.
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- W1998377129 date "2003-01-01" @default.
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- W1998377129 title "Transition metal complexes containing P(C6H5)(C6H4Cl-2)2. The effect of added Lewis bases as a probe for substitution reactions occurring in ambient temperature Suzuki couplings catalyzed by Pd/P(C6H5)(C6H4Cl-2)2" @default.
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- W1998377129 doi "https://doi.org/10.1016/s0020-1693(02)01141-6" @default.
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