X-ray crystal structures of: [Rh2(N-{2,4,6-CH3}C6H2)COCH3)4]•2NCC6H4 AND Ba1.5[Fe(C10H13N2O7)][Co(CN)6]•9H2O; two crystallographic challenges

TLDR: In this paper, a new compound, [Rh 2 (N-{2,4,6-CH 3 }C 6 H 2 )COCH 3 ) 4 ]·2NCC 6 H 5 and Ba 1.5 [Fe(C 10 H 13 N 2 O 7 )][Co(CN) 6 ]·9H 2 O were determined employing a Rigaku Mercury375R/M CCD (XtaLAB mini) diffractometer with graphite monochromated Mo-Kα radiation.

Abstract: The novel compound, [Rh 2 (N-{2,4,6-CH 3 }C 6 H 2 )COCH 3 ) 4 ] was synthesized. Crystal structures of [Rh 2 (N-{2,4,6-CH 3 }C 6 H 2 )COCH 3 ) 4 ]·2NCC 6 H 5 and Ba 1.5 [Fe(C 10 H 13 N 2 O 7 )][Co(CN) 6 ]·9H 2 O were determined employing a Rigaku Mercury375R/M CCD (XtaLAB mini) diffractometer with graphite monochromated Mo-Kα radiation. For [Rh 2 (N-{2,4,6-CH 3 }C 6 H 2 )COCH 3 ) 4 ]·2NCC 6 H 5 , the space group was P-421c(#114) with unit cell dimensions: a =11.0169(14)A, c =21.499(3)A, V = 2609.4(6)A 3 . Each rhodium had approximately octahedral coordination and was bound to another rhodium atom, two nitrogens ( trans to each other), two oxygens ( trans to each other), and one benzonitrile nitrogen ( trans to rhodium). For Ba 1.5 [Fe(C 10 H 13 N 2 O 7 )][Co(CN) 6 ]·9H 2 O the space group was: P-1(#2) with unit cell dimensions: a=13.634A, b=13.768A, c=17.254A and α=84.795°, β=87.863°, γ=78.908°, V=3164.5A 3 . The iron atom (nearly octahedral) was coordinated to one chelating ligand (derived from ethylenediaminetetraacetic acid) and the nitrogen of a cyanide ligand. The carbon of the cyanide ligand was bound to cobalt (octahedral). Thus, the cyanide ligand serves as a bridge between the two metals.