[4,6-Dimethylpyrimidine-2(1H)-thione-κS]iodidobis(triphenylphosphane-κP)copper(I)

Abstract

In the mononuclear title complex, [CuI(C6H8N2S)(C18H15P)2], the CuI ion is in a slightly distorted tetra­hedral coordination geometry formed by two P atoms from two triphenyl­phosphane ligands, one S atom from a 4,6-dimethyl­pyrimidine-2(1H)-thione ligand and one iodide ion. There is an intra­molecular N—H⋯I hydrogen bond. In the crystal, π–π stacking inter­actions [centroid–centroid distance = 3.594 (1) Å] are observed.

Mono- and Binuclear Copper(I) Complexes of Thionucleotide Analogues and Their Catalytic Activity on the Synthesis of Dihydrofurans

“…The bond-length values are within the average of Cu–P (av. 2.290 Å), Cu–Cl (2.375 Å) and Cu–S (2.387 Å) bond lengths reported in the literature − for mixed-ligand copper­(I) chloride complexes with phosphines and thiones. Therefore, the TUC and MTUC ligands are chelating the Cu2 metal centers.…”

“…In general, the Cu–P or Cu–X bond lengths are in agreement with those found in similar structures. The average Cu–Cl bond distance is 2.375 Å, the corresponding one of Cu–Br is 2.501 Å, and that of Cu–I is 2.675 Å (Table ). ,, The average Cu–P bond distance is 2.290 Å in copper chloride complexes, 2.283 Å in copper bromide complexes, and 2.289 Å in copper iodide ones, while the average Cu–S is 2.387 Å in copper chloride complexes, 2.362 Å in copper bromide complexes, and 2.366 Å in copper iodide ones (Table ). ,− It is worth mentioning that the Cu–P and Cu–S bond distances are independent of the nature of the halogen ligand present in the complexes. The bond angles around the copper centers in the cases of 3 – 5 varied between 98° and 124°, with the higher distortion detected for the P–Cu–P angle due to the valence-shell electron-pair repulsions.…”

Bis[μ-bis(diphenylphosphanyl)methane-κ2P:P′](μ-1-ethylthiourea-κ2S:S)bis[iodidocopper(I)] acetonitrile sesquisolvate

“…The terminal Cu-I bond distances (Cu1-I1 = 2.6694 (6) and Cu2-I2 = 2.6690 (5) Å), are in their typical ranges [see e.g. Nimthong et al, 2008;Pakawatchai et al, 2012]. The conformation of the dinuclear complex is such that the two dppm ligands are located on one side of the metal complex, while the two iodine atoms are pointed towards the other side of the…”

“…For examples of dppm as a chelating ligand, see: Yang et al (2000); Liaw et al (2005); Jin et al (2009). For relevant examples of discrete complexes, see: Colacio et al (1997); Yam et al (2001); Zhou et al (2001); Nimthong et al (2008); Pakawatchai et al (2012). Table 1 Hydrogen-bond geometry (Å , ).…”