a crucial conformational change of the six-membered chelate ring from a stable chair conformation to a twist-boat structure, which concomitantly reduced reactivity of the isocyanide ligand toward nucleophilic attack of the amine by sterichindrance of meso-dpmppm pincer ligand. These results could be recognized as on/off switching of the asymmetric PtII(meso-dpmppm−κ3)} pincer complex.
Perfluoroalkyl-Substituted Triazapentadienes and Their Metal Complexes
作者:A. R. Siedle、Robert J. Webb、Fred E. Behr、Richard A. Newmark、David A. Weil、Kristin Erickson、Roberta Naujok、Myles Brostrom、Mark Mueller、Shih-Hung Chou、Victor G. Young
DOI:10.1021/ic020550t
日期:2003.2.24
The chelates [C(3)F(7)-C(NPh)-N-C(NPh)-C(3)F(7)](2)M, M = Mg, Mn, Fe, Co, Ni, Cu, Zn, and Pd, were prepared. In the crystallographicallycharacterized Co complex, the metal is 3d(7), S = (3)/(2) and tetrahedrally coordinated. Spin densities at carbon in the C(6)H(5) and C(3)F(7) groups were estimated from the (1)H and (19)F contact shifts. Spin delocalization onto phenyl sp(2) carbons is approximately
are obtained by reaction of 4-halogen-substituted phenylphosphonates 2a,b,c and lithiumdiphenylphosphide. They can be transformed into air-stable phosphine-horanes 4a,b by co-ordination of the borane-THF complex. The reaction of the phosphonate-phosphine 3b with |ClRh(cod)|2 affords the corresponding rhodium phosphine complex 5. The cyclic phosphinate 8 with a hinaphthalene skeleton can be obtained
Synthesis, characterization and in vitro biological evaluation of [Ru(η6-arene)(N,N)Cl]PF6 compounds using the natural products arenes methylisoeugenol and anethole
作者:Ricardo A. Delgado、Antonio Galdámez、Joan Villena、Patricio G. Reveco、Franz A. Thomet
DOI:10.1016/j.jorganchem.2014.09.005
日期:2015.4
Five new organometallic Ru(II) compounds (VI−X) with the general formula [Ru(η6-arene)(N,N)Cl]PF6, where arene-N,N correspond to methylisoeugenol-bipyridine (VI); anethole-bipyridine (VII); methylisoeugenol-ethylenediamine (VIII); anethole-ethylenediamine (IX) and methylisoeugenol-1,2-diaminobenzene (X), have been synthesized, fully characterized and biologically evaluated in vitro. The reaction conditions
五个新的有机金属钌(II)的化合物(VI-X)具有下列通式的[Ru(η 6 -arene)(Ñ,Ñ)CL] PF 6,在那里arene- Ñ,Ñ对应于methylisoeugenol联吡啶(VI); 茴香脑联吡啶(VII); 甲基异丁香酚-乙二胺(VIII);合成了茴香脑乙二胺(IX)和甲基异丁香酚-1,2-二氨基苯(X),并对其进行了充分表征并在体外进行了生物学评估。基于原位还原[Ru(1,5-COD)Cl 2 ] n 的反应条件具有天然配体的甲基丁香酚和雌二醇的化合物在配位芳烃的烯丙基取代基上诱导烯烃异构化。使用1 H NMR光谱证实了烯丙基取代基上的Ru(II)-芳烃键的形成和C C键的异构化。通过X射线衍射对该化合物VIII验证了该结果。XRD分析表明在单晶中存在该复合物的两种对映异构体。化合物IX和X在体外对三种人类肿瘤细胞系(MCF-7,PC-3和HT-29)的抗药性优于卡铂,后者是一种商业药物。