Bis[bis(pyrimidin-2-yl-κN)amine](dicyanamido-κN¹)(trifluoromethanesulfonato-κO)copper(II) ethanol hemisolvate forms a hydrogen-bonded chain

Abstract

In the crystal structure of [Cu(CF(3)SO(3))(C(2)N(3))(C(8)H(7)N(5))(2)].0.5C(2)H(6)O, the Cu(II) atom adopts a distorted octahedral geometry, with the basal plane formed by two N atoms of one dipyrimidinylamine ligand, one N atom of the second pyrimidine ligand and a nitrile N atom of the dicyanamide anion [Cu-N = 1.972 (2)-2.021 (2) A]. The apical positions are occupied by an N atom of the second ligand [Cu-N = 2.208 (2) A], and an O atom of the trifluoromethanesulfonate anion [Cu-O = 2.747 (2) A] at a semi-coordination distance. Pairs of inversion-related N-H.N hydrogen bonds of the so-called Watson-Crick type, augmented by two C-H.N contacts, link adjacent complexes into an infinite one-dimensional chain running in the [101] direction.

A rare 2D structure of a novel Cu(II) dinuclear-based compound with dicyanamide and 4-nitropyridine-N-oxide as ligands

“…The g value observed in this case is in agreement with a d x 2 Ày 2 ground state and in good agreement with the CuN 4 (O) chromophore [23]. Similar values have been reported for other copper(II) dicyanamide polymeric compounds [24][25][26].…”

Asymmetric chlorine-bridged zig-zag Cu(II) chains linked together in 2D sheets by strong Watson–Crick type intermolecular double hydrogen bonds of bis(pyrimidin-2-yl)amine ligands: synthesis, structure and antiferromagnetism

“…So far only two X-ray crystal structure determination of Cu(II) compounds with dipm have been published [11,12] In this study the synthesis, the crystal structure, characterization and magnetism of the chloro-bridged zig-zag chain compound [ l-Cl-CuCl(dipm)] n is described, in which such intermolecular hydrogen bonding generates a 2-D network.…”

“…A ligand with interesting hydrogen-bonding properties is the recently developed ligand bis(pyrimidin-2-yl)-amine (abbreviated as dipm) [11][12][13]. The dipm molecule can both donate and accept hydrogen bonds, and has a more or less linear donor-acceptor array of the ADA type.…”

Intermolecular Watson–Crick-like ligand pairing in two Cu(II) compounds with the ligand bis(pyrimidin-2-yl)amine forming 2D chain-type compounds

“…This type of hydrogen bond array has been observed earlier with this ligand [10][11][12]14]. Secondly, medium to strong hydrogen bonds are formed by the hydrogen atoms of the coordinated water molecule to the oxygen atoms of the formato anion (compound 1), and to the oxalato anion (compound 2) with OÁ Á ÁO distances of 2.799(3), 2.766(2) Å for compound 1 and from 2.732(4) to 3.125(4) for compound 2.…”

“…A ligand with interesting hydrogen-bonding properties is the recently developed ligand bis(pyrimidin-2-yl)amine (abbreviated as dipm) [10][11][12][13][14]. The dipm molecule can both donate and accept hydrogen bonds, and has a more or less linear donor-acceptor array of the A-D-A type.…”