Diorganotin(iv) 4,6-dimethyl-2-pyrimidyl selenolates: synthesis, structures and their utility as molecular precursors for the preparation of SnSe2 nano-sheets and thin films
Diorganotin(<scp>iv</scp>) 4,6-dimethyl-2-pyrimidyl selenolates: synthesis, structures and their utility as molecular precursors for the preparation of SnSe<sub>2</sub> nano-sheets and thin films
作者:Adish Tyagi、G. Kedarnath、Amey Wadawale、Alpa Y. Shah、Vimal K. Jain、B. Vishwanadh
DOI:10.1039/c5ra20578f
日期:——
Organotin complexes, [R2SnSeC4H(Me-4,6)2N2}2] and [R2SnClSeC4H(Me-4,6)2N2}] (R = alkyl) were prepared and utilized as ssps for the preparation of SnSe2 nanosheets and thin films. Tunability of band gaps has been demonstrated.
Preparation and characterization of symmetrical bis[4-chloro-2-pyrimidyl] dichalcogenide (S, Se, Te) and unsymmetrical 4-chloro-2-(arylchalcogenyl) pyrimidine: X-ray crystal structure of 4-chloro-2-(phenylselanyl) pyrimidine and 2-(p-tolylselanyl)-4-chloropyrimidine
6-dimethyl-2-pyrimidyl, 2-pyridyl, 4-methyl-2-pyridyl). All the newly prepared symmetrical and unsymmetrical pyrimidyl chalcogen compounds have been thoroughly characterized with the help of various spectroscopic techniques viz., NMR (1H, 13C, 77Se), FT-IR and mass spectrometry (in representative cases). The crystal structures of 4-chloro-2-(phenylselanyl) pyrimidine and 2-(p-tolylselanyl)-4-chloropyrimidine
Copper complexes of arylselenolate-based ligands: synthesis and catalytic activity in azide–alkyne cycloaddition reactions
作者:Rohit Singh Chauhan、Dhvani Oza、Seema Yadav、Chandrakanta Dash、Alexandra M. Z. Slawin、Neelam Shivran
DOI:10.1039/c8nj04602f
日期:——
the mono nuclear [CuCl(SeC5H4N)(PPh3)2] (1b) on treatment with excess phosphine. All complexes were characterized by elemental analysis, 1H NMR, IR and mass spectroscopy. The molecular structure of [CuCl(SeC5H4N+H)(PPh3)2] (1b′) was investigated by single crystal X-ray diffraction analysis. The copper(II) complexes of arylselenolates efficiently catalyzed azide–alkyne cyclo-addition reactions (click
[CuCl 2(PPh 3)2 ]与芳基硒酸酯的钠盐反应生成四面体[CuCl(SeAr)(PPh 3)2 ]((Ar = Ph,1a ; C 5 H 4 N,1b ; C 4 H( 4,6-Me)2 N 2),1c)。在结晶过程中,后一种配合物1b和1c的吡啶基氮被质子化。但是,与CuCl 2 ·2H 2 O的相似反应导致形成了组成为[Cu(SeAr)2 ]的聚合物络合物。n(Ar = Ph,2a; C 5 H 4 N,2b)。后者的络合物2b在用过量的膦处理时产生单核[CuCl(SeC 5 H 4 N)(PPh 3) 2 ](1b)。通过元素分析, 1 H NMR,IR和质谱对所有配合物进行表征。通过单晶X射线衍射分析研究了[CuCl(SeC 5 H 4 N + H)(PPh 3) 2 ](1b')的分子结构。铜(二))芳基硒酸酯的络合物可在水中高效催化叠氮化物-炔烃环加成反应(点击反应),从而以中等至中等的产率产生1
Diorganyl dichalcogenides with intramolecular coordination interactions: the synthesis and structure of bis(4,6-dimethylpyrimidin-2-yl) diselenide
作者:A. V. Borisov、Zh. V. Matsulevich、V. K. Osmanov、G. N. Borisova、A. O. Chizhov、G. Z. Mammadova、A. M. Maharramov、R. R. Aisin、V. N. Khrustalev
DOI:10.1007/s11172-013-0356-y
日期:2013.11
Bis(4,6-dimethylpyrimidin-2-yl) diselenide, a new representative of dihetaryl diselenides, was obtained by successively treating selenourea with hydrochloric acid, acetylacetone, potassium hydroxide, and the system iodine—potassium iodide. The unusual planar trans-conformation of this compound (X-ray diffraction data) is stabilized by intramolecular attractive nonvalent Se…N interactions (Se…N, 2.926(1)
Reactivity of hemilabile pyridyl- and methyl-substituted pyrimidylselenolates with [MCl2(dppf)] (M = Pd, pt; dppf = bis(diphenylphisphino)ferrocene)
作者:Rohit Singh Chauhan、David B. Cordes、Alexandra M.Z. Slawin、Seema Yadav、Chandrakanta Dash
DOI:10.1016/j.ica.2018.03.034
日期:2018.6
(dppf) derivedpalladium analogue of [PdCl2(dppf)] on reaction with the sodium salt of pyridyl/pyrimidyl selenolate yielded mononuclear cis configured complex [Pd(SeAr)2(dppf)] (Ar = C5H4N, C4H(4,6-Me)2N2), as did the platinum precursor [PtCl2(dppf)] with methyl substituted pyrimidyl salt giving [PtSeC4H(4,6-Me)2N2}2(dppf)]. In contrast, the reaction of platinum precursor with the sodium salt of pyridylselenolate