Na2PdH2, a hydride with a novel linear [PdH2] complex

Ternary Alkali Metal Transition Metal Acetylides

“…This Na-Pd distance is among the shortest found in the ICSD database [21]. A comparable distance between Na + and Pd(0) was found in Na 2 PdH 2 (300.0(1) pm) [22]. On powdered samples also semiconducting properties were measured and metal-metal interactions were assumed.…”

Chemical bonding features of the ternary alkali metal platinum and palladium hydrides

“…Such units can be TH 2 , TH 4 , and TH 6 [3] where the T-H distances are systematically short (1.58-1.65 Å) while the T-T distances are frequently large compared to the corresponding values in the elemental transition metal solid.…”

LaMg2PdH7, a new complex metal hydride containing tetrahedral [PdH4]4− anions

“…Thus, from a bonding point of view the hydride structure can be rationalized in terms of a palladium centered tetrahedral [PdH 4 ] 4− "complex" having terminal hydrogen ligands (called "complex" hydrogen hereon), and hydrogen anions H − surrounded by Mg 2+ and La 3+ cations only (called "interstitial" hydrogen hereon), corresponding to the limiting ionic formula LaMg 2 PdH 7 = La 3+ [5], triangular such as [PdH 3 ] 3− in NaBaPdH 3 [6], or square planar such as [PdH 4 ] 2− in Na 2 PdH 4 [7] (for a recent review, see ref. [8]).…”