Bis(terdentate) Pyrazole/Pyridine Ligands: Synthesis, Crystal Structures and Magnetic Properties of Bridged Binuclear and Tetranuclear Copper(II) Complexes

Abstract

A new binucleating bis(terdentate) ligand, 3,5-[3-bis(2-pyridyl)

Dinuclear Copper(I) Thiolate Complexes with a Bridging Noninnocent PNP Ligand

“…For thiolates 4 and 5, the intramolecular CuÀN distance is nearly 2.1 , which is typical [17] for pyridine bound to Cu I and slightly shorter than in species 3 Cl. The CuÀS bond length of 2.18-2.30 is only slightly longer than what is reported for other Cu I thiolates.…”

“…(Cu2) in 4, and 359.29 (17) (Cu1) and 359.68(9)8 (Cu2) in 5. The Cu À P bond lengths are around 2.2 , which is slightly longer than in the 1D-polymeric chain of 3 Cl.…”

“…[28] 3 Cl: (2) , V = 6478.10(8) 3 , Z = 8, 1 calcd = 1.459 g cm À3 , R 1 = 0.0402, wR 2 = 0.1183, S = 1.12, 1A C H T U N G T R E N N U N G (min) = À1.43 e 3 , 1A C H T U N G T R E N N U N G (max) = 1.48 e 3 . 5: C 30 H 50 BrCu 2 NP 2 S, M r = 725.70, yellow needle, 0.04 0.04 0.42 mm, T = 150 K, monoclinic, C2/c , a = 35.9407 (17), b = 11.9717 (7), c = 19.4611 (13) , b = 122.436(2)8, V = 7067.2(7) 3 , Z = 8, 1 calcd = 1.364 g cm À3 , R 1 = 0.0524, wR 2 = 0.1485, S = 1.09, 1A C H T U N G T R E N N U N G (min) = À1.19 e 3 , 1-A C H T U N G T R E N N U N G (max) = 1.07 e 3 . Derived parameters do not contain the contribution of disordered solvent.…”