Metallkomplexe von Thio‐ und Selenophosphinsäuren

Kuchen, Wilhelm; Hertel, Herwig

doi:10.1002/ange.19690810402

Cited by 59 publications

(4 citation statements)

References 37 publications

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“…The bidentate nature of the organodithiophosphinate anions exhibits an interesting complexation behavior, in which the anion may act as a chelating or bridging ligand [4]. The latter binding mode is favored in coordination polymers [5]. In this article, we report syntheses, reactivity, and crystal structures of pentamethylcyclopentadienyl dithiophosphinates.…”

Section: Introductionmentioning

confidence: 97%

Syntheses and structure of bis(pentamethylcyclopentadienyl)-dithiophosphinato Complexes

Ebels¹,

Pietschnig²,

Nieger³

et al. 1997

Heteroatom Chem.

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Section: Introductionmentioning

confidence: 97%

Syntheses and structure of bis(pentamethylcyclopentadienyl)-dithiophosphinato Complexes

Ebels¹,

Pietschnig²,

Nieger³

et al. 1997

Heteroatom Chem.

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“…Various dithiophosphinato or diselenophosphinato complexes have been synthesized, with the general structures of M(EEPR 2 ) n , where M = metal ions of Group IIIA (trivalent), IIB (divalent), IVA (divalent), and IB (monovalent), and R = alkyl, phenyl, and alkoxy groups. [28][29][30][31][32] Some of these complexes have been used in SSPAs to make E-based binary semiconductor NCs and thin films but only at temperature higher than 300 8C. [9][10][11][12][13][14] To explore the common mechanism for the formation of the various ME semiconductor nanomaterials from the SSPA and DSPA, herein, CdSe was investigated as a model system in detail.…”

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confidence: 99%

The Formation Mechanism of Binary Semiconductor Nanomaterials: Shared by Single‐Source and Dual‐Source Precursor Approaches

Yu¹,

Li²,

Zeng³

et al. 2013

Angewandte Chemie

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Both singlesource and dual-source precursor approaches (SSPA and DSPA) to binary semiconductors have been documented. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] Such materials consist of elements from two groups such as IIB and VIA. The single-source precursors (SSPs) consist of the metallic and nonmetallic elements of the semiconductor constituents in a single molecule. [9][10][11][12][13][14] DSPA uses separated metallic-element and nonmetallic-element precursors, which commonly involve metal carboxylates (M(OOCR) n such as M = Zn, Cd, Pb, Cu, In) and phosphine chalcogenides (such as E = PHR 2 where E = S, Se, Te), [15][16][17][18][19][20][21][22][23][24][25][26][27] respectively. Despite the large number of recipes developed for the various colloidal semiconductor nanocrystals (NCs) in the past 20 years, there is still little understanding of their formation mechanisms. To realize the full potential of semiconductor materials, there is an urgent need to advance our mechanistic understanding. Filling this gap in our knowledge should have practical implications such as lowering the high temperature currently employed for syntheses and offering new avenues to optimize the design of low-temperature approaches to novel semiconductor nanomaterials.Recent evidence suggests that the formation of various binary semiconductor NCs by SSPAs and DSPAs may share analogous mechanisms. A DSPA to CdS quantumm dots (QDs) at 160 8C in tetradecane (CH 3 (CH 2 ) 12 CH 3 ) was reported from the reaction of cadmium stearate (Cd(OOCC 17 H 35 ) 2 ) and diphenylphosphine sulfide (S= PHPh 2 ). [25] DSAPs to E-based semiconductor QDs have become popular with metal carboxylates as cation precursors and diphenylphosphine chalcogenides E = PHPh 2 as anion precursors. [15][16][17][18][19][20][21][22][23][24][25][26][27] Astonishingly, the lack of a common formation mechanism is actually accompanied by the same 31 P NMR identification of RCOO-PPh 2 (R = C 17 H 33 99 ppm (3 in Scheme 1) or C 6 H 5 102 ppm) and Ph 2 P-PPh 2 (À14 ppm, 4) for the various DSPAs to PbSe, [18] CdSe, [19][20][21][22] ZnSe, [23,24] ZnS, [24] and ZnSeS, [24] together with C 17 H 33 COO-P(Se)Ph 2 (77 ppm, 5) for the Se-based NCs. [18,[21][22][23][24] Furthermore, the conversion of Se = PHPh 2 to diphenyldiselenophosphinate derivatives (ÀSeSePPh 2 ) has been documented. [18,19,22] For instance, [22] the formation of RCOOCdSeSePPh 2 (c) was proposed from a Cd(OA) 2 + Se=PHPh 2 reaction after the release of oleic acid (C 17 H 33 COOH or RCOOH, R = C 17 H 33 ) from (RCOO) 2 Cd(Se = PHPh 2 ) 2 (b) followed by diphenylphosphine (HPPh 2 or DPP) from RCOOCd(Se À PPh 2 )-(Se = PHPh 2 ) (d) through cleavage of the Se = P bond of the Se=PHPh 2 coordination arm.

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“…2,3 Thio-phosphates, -phosphonates and -phosphinates in particular were also included in several of the early studies of the usage of gold() compounds as lubrication additives. [4][5][6][7] The determination of the molecular structure of one of these compounds gave an early example of supramolecular chemistry based on a phenomenon which is now addressed as the 'auriophilicity' effect and is currently attracting considerable interest. [8][9][10] However, it appears that in the past there has not been any systematic study of the chemistry of gold() dithiophosphinates.…”

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confidence: 99%