Neutron diffration of order/disorder PseudoHalides anions of AgCN, AuCN, AgNCO and AgSCN

INOR 696

Darrick J Williams, darrick@lanl.gov, Daemen Luc, and Vogel Sven. LANSCE-LC, Los Alamos National Lab, Lujan Jr. Neutron Scattering Center, LANSCE-12, MS H805, Los Alamos, NM 87545
The study of ordered/disordered psuedohalide ligands (-CN, NCO) in AgCN, AuCN, and AgNCO was carried out using the neutron powder diffractometer HIPPO (High Pressure Preferred Orientation. Powder. Structure analysis was performed all three compounds from 300 to 50 K. Both the AgCN (No. 166, R-3m, a=6.0007(1) Å and c=5.2523(4), Z=3) Å and AuCN (No. 191, P6/mmm, 3.4208(1) Å and c=5.0939(7), Z=3) Å were refined to have disordered CN ligand throughout the structure. AgNCO at various temperatures (No. 11, P21/m, a=5.4742(3) Å, b=6.3784(2) Å, c=3.4170(1) Å β=90.931(5), Vol.=119.298(8), density=4.173 g/cm3, and Z=2) Å was found to have ordered OCN ligands. The bond lengths results from the analysis yielded Ag-N=2.1483(14) Å and C-N=1.1708(33) Å and C-O=1.1829(35) Å.
 

General
7:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Division of Inorganic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006