Chiroptical properties of trigonal-bipyramidal complexes of copper(II), nickel(II), and cobalt(II) containing an optically active tetraamine

Solid State and Solution Characterization of Chiral, Conformationally Mobile Tripodal Ligands

“…Inspection of the literature revealed that a few examples of tripodal ligands with chiral arms had been reported. ,− Our objectives in the present study was to conduct a detailed analysis of the conformational behavior of the ligands in the complexes, including the factors that dictate the axial chirality of the complexes.…”

Metal–N-saccharide chemistry: synthesis and structure determination of two Cu(II) complexes containing glycosylamines

“…The blue band was collected, left standing overnight, and single crystals suitable for X-ray diffraction studies were grown. Yield 1.19 g (52%); )163.6 O(9)-C(9)-C(10)-C (11) 170.8 Table 5. Hydrogen-bond data for 1 (12) 1.28 (11) 1.88 (11) 2.884 (6) 131 (8) Àx; y À 1=2; Àz O(14)-H(21)Á Á ÁO (9) 0.75 (5) 1.95 (5) 2.697 (5) 171 (5) Àx; y þ 1=2; 1 À z O(12)-H(22)Á Á ÁO (8) 0.73 (8) 2.18 (8) 2.908 (7) 175 (9) Àx; y þ 1=2; 1 À z O(10)-H(25)Á Á ÁO (2) 0.65 (7) 2.43 (9) 2.891 (5) 130 (10) x À 1; y; z þ 1 O(9)-H(26)Á Á ÁO (3) 0.88 (6) 1.91 (6) 2.734 (6) 155 (5) x À 1; y; z þ 1 O(8)-H(29)Á Á ÁO (16) 0.52 (6) 2.23 (6) 2.731 (6) 164 (10) Àx; y À 1=2; Àz O(3)-H(10)Á Á ÁCl (1) 0.54 (6) 2.53 (8) 2.998 (7) 147 (8) x; y; À1 þ z O(16)-H(15)Á Á ÁCl (1) 0.96 (5) 2.25 (7) 3.125 (6) 152 (7) 1 À x; y þ 1=2; Àz mp 90-92°C; Anal.…”

Switching off the single-molecule magnet properties of the [CoII(Me6tren)(OH2)]2+ module by complexation with trans-[RuIII(salen)(CN)2]−

“…2 This tripodal tetraamine has the advantage of restricting the coordination sites of a metal centre, acting as a capping ligand, thus allowing the formation of controlled topologies. [3][4][5][6][7] The Me 6 tren ligand can impose a trigonal bipyramid environment around the coordinated metal centres, 7,8 which is known to be a coordination geometry that favours SMM behaviour in Co(II) complexes. 1h Previously, we reported a number of cyanido-based complexes linking 3d, 4d and 5d metal ions to form polynuclear complexes as well as 1-and 2-dimensional networks.…”