The gold(i)⋯lead(ii) interaction: a relativistic connection

Abstract

The heteronuclear complex [Pb{HB(pz)3}Au(C6Cl5)2] is a blue emitter in the solid state and displays an unprecedented and unsupported Au(i)···Pb(ii) contact. Ab initio calculations show a very strong metallophilic interaction that is greatly influenced by relativistic effects.

Anion-driven tetrel bond-induced engineering of lead(ii) architectures with N′-(1-(2-pyridyl)ethylidene)nicotinohydrazide: experimental and theoretical findings

“…85 More recently, the Au I ⋯Pb II interaction has been determined in the structure of [Pb{HB(pz) 3 }Au(C 6 Cl 5 ) 2 ]. 86 The model 2 is suitable for the description of "pure" tetrel bonding Pb⋯N in [PbLN 3 ] n (Fig. S3 in the ESI †).…”

Correlating Structural Features and 207Pb NMR Parameters with the Stereochemical Activity of PbII Lone Pairs in Birefringent Pb[2,6‐bis(benzimidazol‐2‐yl)pyridine] Complexes

“…The corresponding [Pb(bbp)Br] 2 (µ‐Br)[Au(CN) 2 ] differs from the iodide‐containing analogue in that its six‐coordinate distorted octahedral Pb II centre (Table , Figure ) still has a tridentate bbp ligand and two bromide ligands, but the [Au(CN) 2 ] – unit in this case completes the equatorial plane through a rare Pb II –Au I interaction of 3.6998(14) Å (vs. 3.68 Å for the sum of the van der Waals radii), the interaction being elongated as a result of the presence of the stereoactive lone pair. To the best of our knowledge, the only other examples of this heterobimetallic interaction are [Pb(en)][Au(CN) 2 ] 2 , Au 2 Pb(MTP) 4 and, more recently, [Pb{HB(pz) 3 }Au(C 6 Cl 5 ) 2 ], which is the first example of an unsupported Pb II –Au I bond. The two axial bromide ligands have a Br1–Pb1–Br2 bond angle of 160.840(17)°, again all consistent with some level of stereochemical activity of the lone pair …”

Double Jahn–Teller Distortion in AuGe Complexes Leading to a Dual Blue–Orange Emission

“…Only two gold–lead complexes have been reported: one by Fackler et al . and in recent work from our laboratory, the first complex with an unsupported gold(I)–lead(II) interaction . For germanium and tin, 26 and 22 complexes have been structurally characterized, respectively.…”