Dimethyltin(iv)-4,6-dimethyl-2-pyridylselenolate: an efficient single source precursor for the preparation of SnSe nanosheets as anode material for lithium ion batteries

Abstract

The air stable tin(IV) complex [Me2Sn{2-SeC5H2(Me-4,6)2N}2] has been synthesized, characterized by NMR, elemental analysis, single crystal XRD, and employed as a single source molecular precursor (SSP) for the facile synthesis...

Facile one pot synthesis of highly photoresponsive coinage metal selenides (Cu1.8Se and Ag2Se) achieved through novel Cu and Ag pyridylselenolates as molecular precursors

“…Bis( H} NMR (CDCl 3 ) δ: 433.9 ppm] were prepared according to literature methods. 30,33 Elemental analyses were carried out on a Thermo Fischer Flash EA-1112 CHNS analyzer. The 1 H, 13 C{ 1 H} and 77 Se{ 1 H} NMR spectra were recorded on a Bruker Avance-II NMR spectrometer operating at 300, 75.47, 57.24 and 111.92 MHz, respectively.…”

“…Bis(5-methyl-2-pyridyl)diselenide, {SeC 5 H 3 (Me-5)N} 2 [ 1 H NMR (CDCl 3 ) δ : 2.29 (s, Me), 7.36 (d, 8 Hz, H-4), 7.70 (d, 8 Hz, H-3), 8.28 (s, H-6); 77 Se{ 1 H} NMR (CDCl 3 ) d: 451.7 ppm] and bis(4,6-dimethyl-2-pyridyl)diselenide, {SeC 5 H 2 (Me-4,6) 2 N} 2 [ 1 H NMR (CDCl 3 ) δ : 2.25 (s, 3H, 4-Me); 2.52 (s, 3H, 6-Me); 6.77 (s, 1H, H-5); 7.48 (s, 1H, H-3); 77 Se{ 1 H} NMR (CDCl 3 ) δ : 433.9 ppm] were prepared according to literature methods. 30,33…”

“…They include the decomposition of [Ag{SeC 4 H(Me-4,6) 2 N 2 }] 6 • 6MeOH•H 2 O to prepare Ag 2 Se as reported by Sharma et al 25 and the utilization of [Ag 4 (TFA) 4 ( t Bu 2 S) 4 ] for synthesizing the Ag 2 S material by Gahlot et al 29 Previously, we have extensively utilized metal complexes with internally functionalized hemilabile chalcogenolate ligands to afford high quality nanocrystals and thin films which have been evaluated for their photo-responsive behaviour and energy storage applications. [30][31][32] Extending our quest to molecular precursors for coinage metal chalcogenides, in this article, we present the synthesis and characterization of novel air stable copper and silver complexes with 5-methyl-2pyridylselenolate and 4,6-dimethyl-2-pyridylselenolate ligands. The utility of these complexes as suitable SSPs for the preparation of highly photo-responsive phase pure copper and silver selenide materials has been successfully demonstrated by low temperature thermolysis of the same.…”

Molecular precursor-mediated facile synthesis of phase pure metal-rich digenite (Cu1.8S) nanocrystals: an efficient anode for lithium-ion batteries

“…26,27,36 Recently, we have also explored the potential of SSP derived SnS and SnSe as anode materials in LIBs. 37,38 To widen the horizon for SSP-derived metal chalcogenides for LIB applications, herein, we report the selective synthesis of metal-rich digenite Cu 1.8 S nanostructures from [(PPh 3 ) 2 CuCl(SpymMe 2 )] as a SSP along with its performance as an anode material in LIBs. A handful of SSPs, limited reports on the LIB application of the Cu 1.8 S material and no report on the investigation of Cu 1.8 S nanostructures synthesized via SSP for LIB performance as an anode material have been the motivation behind this investigation.…”

Molecular precursor-mediated facile synthesis of photo-responsive stibnite Sb2S3 nanorods and tetrahedrite Cu12Sb4S13 nanocrystals

“…Previously, our group has successfully used hemilabile internally functionalized chalcogenolate ligand derived metal complexes for the facile synthesis of binary and ternary metal chalcogenide nanostructures and thin films which have been evaluated for their photo-responsive behaviour and energy storage applications. 26,35,36 The internally functionalized ligand especially pyridyl/pyrimidyl chalcogenolates provides stability to the precursor towards an oxidizing environment. 37,38 To expand the horizon of molecular precursors for binary antimony sulfide and ternary copper antimony sulfide, in this article we present the synthesis and characterization including structure elucidation of an air-stable antimony (III)-4,6-dimethylpyrimidylthiolate complex.…”