[NaCu^II₄] Cluster from Alkali Template Assembly of Two Asymmetric End-On Azido-Bridged [Cu^II₂] Units

Azido, Cyanato, and Thiocyanato Coordination Induced Distortions in Pentacoordinated [CoIIA(bip)]2 (A = NCS–, N3–, or NCO–) Complexes

“…This bridge is responsible for the change in metal-metal separations and metal-oxygen-metal angles, as apical binding always leads to out-of-plane longer bonds, which is most common in azido-bridged Cu II systems (Scheme 2). [49] Interestingly with a similar dioxime-based ligand Hdox (Scheme 1) the dinuclear complex of Co II exhibits a nearly planar structure in which each metal center adopts an octahedral coordination geometry and basal-basal binding. [36] The two Co II ions lie in a plane defined by four N-and two O-donor atoms from the two ligands.…”

New Mixed‐Metal Aggregates Derived From Dinickel Complexes on a 2‐Formylphenolate Template: Counteranion Dependent Formation of 1D Chain and Discrete NaNi2 Complexes

“… Different coordination environments around Na I . Left: the coordination of a trisphenolate isosceles triangular face within a NaNO 4 core in 2 ; middle: the same O 3 triangular face within a NaO 4 core in 3 ; right: the relative orientation of two such faces in a NaO 6 core in a reported Cu 4 complex (ref 8…”

“…The oxophilic nature of Na + allows its coordination to the trisphenolate unit first, after which anions are either incorporated or remain uncoordinated in order to provide 1D chain or discrete NaNi 2 complexes, respectively. The typical arrangement of L 3– around the Ni II ions in 1 leads to the formation of a [–O–Ni–O–Ni–O–] moiety disposed so as to provide three facial oxygen donors that form distorted square‐pyramidal and trigonal coordination environments around Na + cation, which is different from the most common octahedral coordination 8,18…”

A new NiIICuIICuII NiII complex containing doubly end-on azido bridged dicopper(II) and macrocyclic nickel(II) complex ancillary ligands: Synthesis, structure and magnetism

“…Research on the magnetism of polynuclear complexes is currently of considerable interest [1][2][3][4][5]. Connecting two or more metal centers using bridging ligands is an important strategy to design polynuclear complexes.…”

“…Connecting two or more metal centers using bridging ligands is an important strategy to design polynuclear complexes. The diversities of bridging modes and magnetic interaction mediating modes of azide make it a versatile and important ligand [2][3][4][5][6]. The bridging modes of azide have close relationships with the nature and magnitude of the magnetic exchange interactions between the metal centers.…”