Synthesis and Crystal Structure of KLa[C(CN)₃]₄·H₂O containing a Shielded Potassium Ion

Abstract

KLa[C(CN)3]4·H2O was crystallized from an aqueous solution containing La(NO3)3·6H2O and K[C(CN)3]. The crystal structure was solved and refined from X‐ray single crystal data (P4/n, Z = 2, a = b = 12.379(1) Å, c = 6.5695(8) Å, V = 1006.7(2) Å3). Solid KLa[C(CN)3]4·H2O forms a framework structure with bridging tricyanomethanide ions, each of them connecting two La3+ ions and one K+ ion. Potassium is apparently situated in a tetrahedral environment with four K–N distances of 2.741(3) Å, shielded by four other tricyanomethanide ions. Each La3+ has a square antiprismatic coordination of nitrogen atoms from eight [C(CN)3]– ions, and this antiprism is mono‐capped by one water molecule.

Capacity Enhancement and Discharge Mechanisms of Room‐Temperature Sodium–Sulfur Batteries

“…Effective reaction temperatures of these SSM reactions range from 400 to 600 °C 11,18. The employment of an oxide source in this type of SSM reaction can produce a nitridoborate‐oxide [La 6 (BN 3 )O 6 ] or a carbodiimide‐oxide [La 2 O(CN 2 ) 2 , Y 2 O 2 (CN 2 )19].…”

A Luminescent Material: La3Cl(CN2)O3 Doped with Eu3+ or Tb3+ Ions

“…The related compound La 2 O(CN 2 ) 2 was synthesized from LaCl 3 , LaOCl, and Li 2 (CN 2 ) between 500 and 650°C [Reaction (2)]. [24] The compound La 2 O 2 (CN 2 ) with an interchanged number of anions can by synthesized from Li 2 (CN 2 ) and LaOCl without LaCl 3 [Reaction (3)]. [1] The compound LaCl(CN 2 ) was obtained from LaCl 3 and Li 2 (CN 2 ) at 600°C [Reaction (4)].…”

“…[24] The compound La 2 O 2 (CN 2 ) with an interchanged number of anions can by synthesized from Li 2 (CN 2 ) and LaOCl without LaCl 3 [Reaction (3)]. [1] The compound LaCl(CN 2 ) was obtained from LaCl 3 and Li 2 (CN 2 ) at 600°C [Reaction (4)]. [25] …”

“…[1] With the use of this method it is possible to synthesize a vast range of materials, such as nitrides, phosphides, oxides, sulfides, borides, silicides, and others. This group extends from quasi-binary carbodiimide compounds RE 2 (CN 2 ) 3 [3] through to multinary carbodiimides REX(CN 2 ) (X = Cl, F), [4] RE 2 X(CN 2 )N (X = Cl, Br, I), [5,6] LiRE 2 X 3 (CN 2 ) 2 (X = F), [7] LiRE(CN 2 ), and RE 3 (CN 2 ) 3 -N. [8] This group extends from quasibinary carbodiimide compounds RE 2 (CN 2 ) 3 [3] through multinary carbodiimides REX(CN 2 ) (X = Cl, F), [4] RE 2 X(CN 2 )N (X = Cl, Br, I), [5,6] LiRE 2 X 3 (CN 2 ) 2 (X = F), [7] LiRE(CN 2 ), and RE 3 (CN 2 ) 3 N [8] for several examples of RE elements. This group extends from quasi-binary carbodiimide compounds RE 2 (CN 2 ) 3 [3] through to multinary carbodiimides REX(CN 2 ) (X = Cl, F), [4] RE 2 X(CN 2 )N (X = Cl, Br, I), [5,6] LiRE 2 X 3 (CN 2 ) 2 (X = F), [7] LiRE(CN 2 ), and RE 3 (CN 2 ) 3 -N. [8] This group extends from quasibinary carbodiimide compounds RE 2 (CN 2 ) 3 [3] through multinary carbodiimides REX(CN 2 ) (X = Cl, F), [4] RE 2 X(CN 2 )N (X = Cl, Br, I), [5,6] LiRE 2 X 3 (CN 2 ) 2 (X = F), [7] LiRE(CN 2 ), and RE 3 (CN 2 ) 3 N [8] for several examples of RE elements.…”

Synthesis of Nanocrystalline Gd2O2NCN from a Versatile Single‐source Precursor

“…was reported. For instance, inorganic compounds such as Ln 2 O 2 X ( Ln = lanthanide cation, X = S 2– ,, Se 2– , CO 3 2– ,, , NCN 2– ), Ln 2 O X 2 ( X = S 2– , Se 2– , Te 2– , NCN 2– ), L nCl(NCN) ( Ln = La 3+ , Ce 3+ , Pr 3+ ) or Ln 2 (NCN) 3 received increased attention within the last decades and various preparative methods were reported to make those accessible.…”