Crystal structure and characterisation of cadmium cyanamide

Abstract

International audienceThe crystal structure of cadmium cyanamide was investigated by X-ray powder analysis and refined using the Rietveld method. Very fine powders of CdCN2 in the nanometre range were obtained by chemical bath deposition. The size, shape and microstrain were characterised by X-ray diffraction and transmission electron microscopy. The refined structure is very close to that of MgCN2. Infrared spectroscopy and thermogravimetric analysis were also performed to fully characterise the compound

Synthesis and Characterisation of the Nitridocuprate(I) Nitride Carbodiimide (Sr6N)[CuN2][CN2]2

“…The symmetric, asymmetric, and deformation vibrational frequencies agree well with what has been previously observed for [CN 2 ] 2– anions via Raman spectroscopy , , . The splitting at roughly 2000 cm –1 is typically seen for cyanamides, but is also seen in multi‐cationic carbodiimides .…”

(Sr6N)[CoN2][CN2]2: The first low-valency nitridometalate carbodiimide

“…IR and Raman investigations of alkaline-earth cyanides, cyanamides, and carbodiimides [11] revealed a strong relationship between C-N bond lengths, cation mass, electronegativity, and coordination environments. In most alkaline-earth-containing ionic compounds, the slightly differing C-N distances may be attributed to the different coordination spheres of the N species in the [ have to be regarded as carbodiimide anions.…”

Synthesis and Crystal Structure of Ammine Copper(I) Cyanamide, Cu4(NCN)2NH3

“…With respect to the crystal structures of these compounds, a linear coordination of the metal atoms by nitrogen atoms of the NCN 2Ϫ units is found for silver cyanamide Ag 2 NCN [1], mercury carbodiimide HgNCN(I) [2], mercury cyanamide HgNCN(II) [3], and the two slightly more complex solid-state coordination compounds Hg 2 (NCN)Cl 2 and Hg 3 (NCN) 2 Cl 2 [4]. Zn 2ϩ , on the other side, is tetrahedrally coordinated within ZnNCN [5] whereas Cd 2ϩ is subject to octahedral coordination in CdNCN [6]. A single Cu(II) complex involving the neutral cyanamide molecule, Cu(NCNH 2 ) 4 Cl 2 , has been reported [7] but the reaction of Cu(II) with anionic cyanamide units yields a black material whose amorphous nature renders its structure determination difficult [8].…”