Ferromagnetic Spin Ladder System: Stack of Chlorido‐Bridged Dinuclear Copper(II) Complexes with 2‐Methylisothiazol‐3(2H)‐one

Abstract

A dinuclear copper(II) complex, [{Cu II Cl(O-mi)} 2 (μ-Cl) 2 ] [mi = 2-methylisothiazol-3(2H)-one], has been synthesized and its molecular structure in the solid state determined by single-crystal X-ray analysis. The crystal consists of centrosymmetric dinuclear copper(II) units in which each copper(II) ion is doubly bridged by two chloride ions and has a slightly distorted square-planar geometry with a terminal chlorido ligand and a terminal mi ligand coordinated through the oxygen atom. The dinuclear units stack one on top of another to form a one-dimensional two-leg ladder structure. The magnetic susceptibility of the powder was measured in the temperature range 3.0-302 K. It was found that there are ferromagnetic interactions along the rung (in the same direction

First-order commensurate–incommensurate magnetic phase transition in the coupled FM spin-1/2 two-leg ladders

“…2. It only goes up with cooling the system which is in good agreement with the experimental results [28]. The asymptotic behavior confirms that the ground state of the system is in a magnetic ordered phase at T ¼0, which is also in complete agreement with our results on the magnetization.…”

“…It is found [28] that the rung exchange J 9.68 K rung = − is about four times larger than J 2.068 K leg = − . In the following, we consider these values in our QMC simulation approach.…”

“…Recently, Nagashiwa and coworker synthesized chloridobridged dinuclearcopper(II) complex 2-methylisothiazol-3(2H)-one with chemical formula [Cu Cl O mi Cl [28]. This compound is a quasi-two-leg ladder system with FM exchange interaction in legs and rungs.…”

Topological Phases of the Spin-1/2 Ferromagnetic–Antiferromagnetic Alternating Heisenberg Chain with Frustrated Next-Nearest-Neighbour Interaction

“…A frustrated ferromagnetic ladder compound with this structure has been synthesized recently. 16) Although the ground state of this material is ferromagnetic, the frustration effect would be enhanced if the exchange interactions can be modified. As a result, the ground state can change into more exotic nonmagnetic phases owing to the interplay of frustration and quantum fluctuation.…”

Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba3Cu3In4O12and Ba3Cu3Sc4O12

“…[16][17][18] Other 2-rung ladder systems have been reported where the NN neighbor interactions are FM; however in these systems the AFM NNN interactions dominate. [19][20][21] Recently the magnetic properties of Ba 3 Cu 3 In 4 O 12 (In-334) were reported. [22] The spin-½ Cu 2+ cations in In-334 form chains that propagate along the c-direction of the tetragonal unit cell and form an unusual half-twist ladder arrangement ( Figure 1a and Figure 1b).…”