Interaction between Cu and Ag free ions and central metals in complexes with XHn units (X = B, Si, N, O, C, Al, Zn, Mg; n = 1, 2)

Semicoordination Bond Breaking and Halogen Bond Making Change the Supramolecular Architecture of Metal-Containing Aggregates

“…Noncovalent interactions involving metal species might compete with each other or provide the cooperativity effect to achieve the desired supramolecular arrays. These contacts with the engagement of metal centers are substantially less studied than weak interactions in metal-free systems, with most works focused on metallophilic interactions, , semicoordination bonding , (SB, relevant to spodium and regium bonding), hydrogen bonding (HB), , anagostic , and agostic interactions, ,− and metal−π contacts. , …”

“…Noncovalent interactions involving metal species might compete with each other or provide the cooperativity effect to achieve the desired supramolecular arrays. These contacts with the engagement of metal centers are substantially less studied than weak interactions in metal-free systems, with most works focused on metallophilic interactions, 9,10 semicoordination bonding 11,12 (SB, relevant to spodium 13 and regium bonding 14 ), hydrogen bonding (HB), 15,16 anagostic 16,17 and agostic interactions, 15,18−20 and metal−π contacts. 16,21 As a part of our ongoing project on crystal engineering involving metal complexes, we revealed the structure-directing role of halogen bonding (XB) in the construction of the supramolecular architecture of metal acetylacetonates, which are mostly determined by M•••C stacking interactions.…”

Metal Centers as Nucleophiles: Oxymoron of Halogen Bond‐Involving Crystal Engineering

“…It is also noteworthy that metal-involving HaB, uncovered in this minireview, is relevant to the well-docu-mented metal-involving hydrogen bonding (for reviews see Ref. [99][100][101][102] and for recent studies see Ref. [103][104][105][106][107]).…”

Can Copper(I) and Silver(I) be Hydrogen Bond Acceptors?

“…[21,22] Copper and silver, despite their proximity to Co, Ni, Pt, and Au, in the periodic table, have not been observed to take part in H-bonding interactions but have been found to interact with electron-rich bonds such as BÀ H and MÀ H (M = Mg, Al, Zn) and CÀ H as recently reviewed by Raubenheimer and Dobrzańska. [23] Theoretical and experimental gas-phase studies on simple systems such as Cu(H 2 O) À * [24,25,26] indicate H bonding interactions between OÀ H bonds and metal clusters or metals in a negative oxidation state (Cu À , Ag À ). Still, H bonding interactions are not known for the common (+ I) oxidation state of Cu and Ag, isoelectronic with the d [10] gold(I) complexes, which can form H bonds (see above).…”