Syntheses and supramolecular structures of two 5‐nitrosalicylate titanocene complexes

Abstract

IV in complex I is different from that in complex II. Crystallographic characterization revealed that each of the complexes exhibits a three-dimensional framework constructed through weak interactions, which are H-bonding, π -π stacking and C-H· · · π interactions, but they differ greatly when forming the three-dimensional network structure in both complexes. The results show that the dramatic change of conditions has great effect on the molecular structure of 5-nitrosalicylate titanocene, thereby significantly influencing the weak interactions and the specific framework structure.

Preparation of organozirconium aromatic compounds in mixed aqueous-organic solvents: X-ray structures of [Cp2ZrCl(μ2-O′,O′′C-C6H5)], [(CpZr)3(μ2-O′,O′′C-C6H3Cl2)3(μ3-OH)(μ2-OH)3](Cl2C6H3COO)2, and [(CpZr)3(μ2-O′,O′′C-C6H4Cl)3(μ3-OH)(μ2-OH)3]Cl2·CH2Cl2

“…Previously, we prepared and characterized substituted aromatic acid titanocene compounds in aqueous media [31][32][33][34][35]. Zirconocene compounds proved more problematic, probably due to the lability of Cp 2 ZrCl 2 in aqueous solution.…”

Crystal structural characterization of three chlorosalicylato titanocene compounds

“…All compounds were characterized by elemental analysis, IR, 1 H NMR spectroscopy and single-crystal X-ray analysis, respectively. X-ray analysis of three compounds show that each of the compounds exhibits a four-coordinated, distorted tetrahedron structure, and each substituted salicylic acid acted as a bidentate ligand and coordinates with Ti IV to form a hexacyclic compound, similar to [(g 5 -C 5 H 5 ) 2 Ti(O,O 0 ) (5-NO 2 -OCC 6 H 3 )] [23].…”

Crystal structure of 5-[(E)-2-phenyl-1-diazenyl]-(2-hydroxy-benzenecarboxylato-O,O′)titanocene—dichloromethane (1:0.5), (C6H7)2Ti(C13H8N2O3) · 0.5CH2Cl2

“…The titanium atom in the molecular structure has apseudotetrahedral coordination environment, consisting of two methylcyclopentadienyl ligands and aazosalicylate ligand and the salicylate ligand acts as abidentate ligand and coordinates with Ti to form a six-membered ring. The geometry of the titanocene skeleton of the complex is similar to that of its analogue titanocene complexes [2,3]. The Ti1−Cg1 and Ti1−Cg2 distances are 2.060(3) Å and 2.070(2) Å,r espectively.…”