Niobium tetrachloride complexes with thio-, seleno- and telluro-ether coordination – synthesis and structures

Abstract

NbCl4 reacts with the dithioethers MeS(CH2)nSMe (n = 2 or 3),

Synthesis, properties and structural features of molybdenum(v) oxide trichloride complexes with neutral chalcogenoether ligands

“…Although the large soft tellurium centres are not usually thought to be good ligands for high valent d-block metals, a range of compounds has been reported in the last few years, including examples with NbCl 4 , 47 ; complexes of the latter type were reported in the 1970s 7,8 but this is the first structural authentication. The work has provided detailed characterisation of MoOCl 3chalocogenoether complexes, and comparison with the W(VI) and W(V) analogues, and lays the basis for exploration of corresponding molybdenum sulfide chloride complexes, 19 which may provide single source LPCVD reagents for deposition of MoS 2 thin films.…”

Synthesis and properties of MoCl4complexes with thio- and seleno-ethers and their use for chemical vapour deposition of MoSe2and MoS2films

“…in vacuo. 36 It is important to note that the TGA experiments are performed at 1 atmosphere pressure under flowing argon, and hence very different from LPCVD conditions. However, TGA does provide a guide to the volatility of the precursors.…”

Chalcogenoether complexes of tantalum(V) sulfide trichloride – Synthesis, properties and structures

“…A very small number of complexes of TaECl3 have inorganic analogues of graphene and their band gaps and other properties for various applications can be tuned by varying the chalcogen or the metal [11], [12]. In recent studies we have examined a range of thio-and seleno-ether complexes of niobium and tantalum halides as potential single source low pressure chemical vapour deposition (LPCVD) reagents for the production of thin films of the transition metal dichalcogenides [13][14][15]. Thus, [NbCl5(E n Bu2)] produced thin films of the 3R-polytype (R3mh) of NbS2 and NbSe2; the butyl-substituents provide a β-hydride decomposition route facilitating cleavage of the ligands in an accessible temperature range.…”