Zinc(ii) and cadmium(ii) complexes, [M(ⁱPr₂P(X)NC(Y)NC₅H₁₀-κ²-X,Y)₂] (X and Y = O, S), as single source precursors for metal sulfide thin films

Abstract

Structural, morphological and optical studies of zinc and cadmium sulfide thin films with different contents of phosphorus.

Aerosol-assisted chemical vapor deposition of MSe and MSSe thin films using zinc(ii) and cadmium(ii) single source precursors containing hybrid Se,X-PNC ligands

“…Proligands ( i Pr 2 P(Se)NHC(X)NC 5 H 10 ) with X = S ( 1 ); X = O ( 2 ); and precursors [M( i Pr 2 P(Se)NC(X)NC 5 H 10 -κ 2 -Se,X) 2 ] with M = Zn, X = S ( 3 ) and X = O ( 4 ); and with M = Cd and X = S ( 5 ); and [Cd( i Pr 2 P(Se)NC(O)NC 5 H 10 ) 2 -μ-O,O] 2 ( 6 ) were synthesized according to reported methods. 29,30 Complexes were moisture and air stable solids. Proligands adopted the amido tautomeric structure in both the solid state and solution, as reported for similar PNC proligands.…”

“…New i Pr 2 P(Se)NHC(X)NC 5 H 10 proligands, with X = S ( 1 ), O ( 2 ) and the corresponding Zn( ii ) and Cd( ii ) complexes, [M{ i Pr 2 P(Se)NC(X)NC 5 H 10 -κ 2 -Se,X} 2 ] (M = Zn, X = S ( 3 ), O ( 4 ); M = Cd, X = S ( 5 )) and the dinuclear Cd( ii ) complex with X = O ( 6 ), were synthesized according to methods described in the literature. 29,30 Synthesis and characterization data for every proligand and precursor are provided in the ESI †…”

“…23 Furthermore, complexes with N -chalcogenophosphinoylchalcogenoureato ligands (PNC ligands: [R 2 P(Y)NC(X)R′] − , X and Y = O, S), which are the unsymmetrical analogues of PNP and CNC ligands, have been reported to be used for metal-containing nanoparticles 25–28 and thin film synthesis. 28–30 We recently reported studies on Zn( ii ) and Cd( ii ) bis-chelates [M{( i Pr 2 P(X)NC(Y)R′-κ 2 - X , Y } 2 ] with disulfur- or hybrid X , Y -donors and R′ = NC 4 H 8 , NC 5 H 10 ) as SSPs, 29,30 which allowed the deposition of metal sulfide thin films with an M : S ratio ca. 1 : 1.…”

“…The films exhibited a phosphorous content of up to 8.2% and a smooth and grainy columnar morphology. 30 Frequently, mixed-metal or mixed-chalcogenide ternary thin films are deposited using two or even more source precursors to allow tuning of the composition and properties of materials. 23,31–33 Few examples of mixed-metal nanostructured materials obtained from only one SSP have been reported.…”

“…32 We studied the differences of these hybrid Se,X-complexes as precursors forming both metal selenide and sulfoselenide along with their ability to form homogeneously distributed P-containing materials as the analogous S-containing precursors. 30 In addition, we investigated their influence on the optical properties and morphology of the as-deposited thin films, since these could be crucial for further optoelectronic and photocatalytic applications. 18,38…”