New Complexes with a Sterically Hindered Thiourea: Syntheses and Crystal Structures of [Co(dchtu)₂Cl₂], [Zn(dchtu)₂(NCS)₂] and [Pb(dchtu)₆](SCN)₂·2C₂H₅OH (dchtu = N,N′‐dicyclohexylthiourea)

Abstract

New complexes of a sterically hindered thiourea, [M(dchtu) 2 Cl 2 ] (M ϭ Co 1, Ni 2), [Zn(dchtu) 2 (NCS) 2 ] (3) and [Pb(dchtu) 6 ](SCN) 2 · 2C 2 H 5 OH (4) (dchtu ϭ N,NЈ-dicyclohexylthiourea), have been synthesized and characterized. The single crystal structures of 1, 3 and 4 have been determined by single crystal Xray diffraction analyses. Co II , Ni II , and Zn II form 1: 2 compounds with dchtu even if molar excesses of dchtu is used, while Pb II forms 1:6 compound under the same conditions. The dchtu acts as a monodenate S-donor ligand in all the complexes. Co II and Zn II atoms 2059 are tetrahedrally coordinated with two dchtu ligands, and two chloride or isothiocyanate ions, respectively. The Pb II ion in 4 forms an octahedral coordination sphere with six dchtu ligands. The structures of the complexes are stabilized by a system of intermolecular H-bonding.

Tris(N-benzoyl-N′,N′-diphenylthioureato-κ2O,S)cobalt(III)

“…1), which presents an octahedral environment about the Co III atom with the ligands coordinating in a relatively distorted manner ( Table 1). The Co-S bond lengths lie within the range of those found in the related structure (Jia et al, 2007). The lengths of C-O, C-S and C-N bonds in the chelate rings are between characteristic single and double bond lengths; they are shorter than single bond and longer than double bond.…”

“…For general background and related structures, see: Arslan et al (2003); Jia et al (2007). For ligand synthesis, see: Herná ndez et al (2003).…”

Rational Design of Core@shell Structured CoSx@Cu2MoS4 Hybridized MoS2/N,S‐Codoped Graphene as Advanced Electrocatalyst for Water Splitting and Zn‐Air Battery

“…The mechanism for the formation of the CoS x @Cu 2 MoS 4 core@shell nanostructures dispersing on surface of the MoS 2 /NSG may involve some steps. The first step was the creation of Co(thiourea) 4 (NO 3 ) 2 complexes in the presence of Co 2+ ions and thiourea (tu) linkers . These complexes acted as active templates for absorbing Cu 2+ ions onto their surface.…”

cis-Bis[N-(2-furoyl)-N′,N′-diphenylthioureato-κ2O,S]nickel(II)

“…For general background, see: Arslan et al (2006). For related structures, see: Jia et al (2007); Pé rez et al (2008). For the synthesis of the ligand, see: Herná ndez et al (2003).…”