有机锑(V)二茂铁基苯甲酸酯(OFBs)[ p-(C 5 H 5 FeC 5 H 4)C 6 H 4 COO] 2 SbR 3(R = C 6 H 5,p -CH 3 C 6 H 4)(3,4)和[ m-(C 5 H 5 FeC 5 H 4)C 6 H 4 COO] 2 SbR 3(R = p合成-CH 3 C 6 H 4)(5)并通过FT-IR,1 H和13 C NMR,单晶XRD和元素分析对其进行表征。该复合体(的DNA相互作用3 - 5)通过UV-Vis光谱和循环伏安法(CV)研究。发现复合物-DNA的结合常数按以下顺序变化:K 2(4.80×10 5)> K 1(2.36×10 4)> K 3(1.87×10 4)> K 4(6.61×10 3)> K 5(6.58×10 3)。DNA存在下OFBs的峰值电势,电流和吸收最大值的变化表明,CV结合UV-Vis光谱学可以为表征
Structural, Spectroscopic and Computational Examination of the Dative Interaction in Constrained Phosphine-Stibines and Phosphine-Stiboranes
作者:Brian A. Chalmers、Michael Bühl、Kasun S. Athukorala Arachchige、Alexandra M. Z. Slawin、Petr Kilian
DOI:10.1002/chem.201500281
日期:2015.5.11
computational methods. The P–Sb dativeinteractions in both series range from strongly bonding to non‐bonding as the Lewis acidity of the Sb acceptor is decreased. In the pentavalent antimony series, a significant change in the P–Sb distance is observed between SbClPh3 and SbCl2Ph2 derivatives 6 and 7, respectively, consistent with a change from a bonding to a non‐bonding interaction in response to relatively
作者:Liam J. R. McGeachie、Cameron L. Carpenter‐Warren、David B. Cordes、Michael Bühl、Steven J. Gray、Guoxiong Hua、Alexandra M. Z. Slawin、J. Derek Woollins
DOI:10.1002/zaac.202000238
日期:2020.11.30
to d‐block and main group NSO complexes is presented including the synthesis of the first antimony(V) complexes, (Ar3Sb(NSO)2), and copper examples [CuBipy(PPh3)NSO]. The structures of eight complexes are reported. The observed variation in M–N–S bond angles is due to the combination of orbital overlap (ligand‐to‐metal bonding) and the degree of ionicity of the bonding.
ntimony) was found to be a mild arylation reagent. The arylation was chemoselective toward aromatic acidhalides to give the corresponding aromatic ketones. No direct addition to ketone and acid anhydride occurred. Arylation reactions of aldehyde or ketone were promoted by the addition of Lewis acid. The nucleophilicities of aromatic antimony compounds depend on the number of antimony-aromatic carbon
Antimony(<scp>v</scp>) cations for the selective catalytic transformation of aldehydes into symmetric ethers, α,β-unsaturated aldehydes, and 1,3,5-trioxanes
作者:Renzo Arias Ugarte、Deepa Devarajan、Ryan M. Mushinski、Todd W. Hudnall
DOI:10.1039/c6dt02121b
日期:——
acidity of [2][OTf] was exploited in the catalytic reductivecoupling of a variety of aldehydes into symmetric ethers of type L in good to excellent yields under mild conditions using Et3SiH as the reductant. Additionally, [2][OTf] was found to selectively catalyze the Aldol condensation reaction to afford α-β unsaturated aldehydes (M) when aldehydes with 2 α-hydrogen atoms were used. Finally, [2][OTf]
Pd-catalyzed C-arylation of unsaturated compounds with pentavalent triarylantimony dicarboxylates
作者:Dmitry V Moiseev、Aleksey V Gushchin、Andrey S Shavirin、Yury A Kursky、Viktor A Dodonov
DOI:10.1016/s0022-328x(02)02179-4
日期:2003.2
Triarylantimony(V) derivatives Ar3SbX2 (X=Hal or acyloxy) were prepared by reaction of Ar3Sb with equimolar amounts of a peroxide ROOH (R=t-Bu, H) in the presence of an acid or an anhydride in good to excellent yields. Ar3Sb(O2CR)2 are mild and efficient C-arylation reagents of unsaturatedcompounds (methyl acrylate, styrene, 2-phenylpropene and acrylonitrile) under palladium catalysis at 50 °C, with