The first pyrazole molybdenum(0) complexes: cis-[Mo(CO)4(Hdmpz)2] crystallizes as a NH⋯OC hydrogen-bonded dimer

Synthesis and dynamics of a novel proton transfer complex containing 3,5-dimethylpyrazole as a donor and 2,4-dinitro-1-naphthol as an acceptor: crystallographic, UV-visible spectrophotometric, molecular docking and Hirshfeld surface analyses

A CT complex is synthesized and characterized by spectral and crystallographic techniques. The Hirshfeld and molecular docking studies are also performed.

Stable metal-organic complexes as anion hosts

A growing number of metal-organic complexes are being employed as anion hosts. This tutorial review focuses on stable, mononuclear transition metal complexes with a well defined geometry that use a combination of electrostatic attraction and hydrogen bonds for anion binding. In these hosts, the metal provides positive charge and act as a scaffold that holds the ligands containing the hydrogen-bond donor groups in the appropriate positions. Issues particular to these hosts, such as the choice of the ligands, metal center and counteranion, and the stability of the host, are discussed using examples from the recent literature. This paper is addressed to readers interested in supramolecular chemistry and coordination or organometallic chemistry.

Biimidazole and Bis(amide)bipyridine Molybdenum Carbonyl Complexes as Anions Receptors

Compounds [Mo(CO)4(N-N)] (N-N = 4,4'-bis((4-methylphenyl)carbamoyl)-2,2'-bipyridine, bipy', 1; or 2,2'-biimidazole, H2biim, 2), [MoCl(eta3-methallyl)(CO)2(N-N)] (N-N = bipy', 3; H2biim, 4), and [Mo(eta3-methallyl)(CNtBu)(CO2)(N-N)]BAr'4 (Ar' = 3,5-bis(trifluoromethyl)phenyl; N-N= bipy', 5; H2biim, 6) were synthesized and characterized, and their behavior toward anions was investigated in solution (IR and 1H NMR) and in solid state (X-ray diffraction).