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Small Platinum−Thallium Clusters Stabilized by Ethylenediamine, [(NC) 5 Pt−Tl(en) n −1 ] ( n = 1−3) − Characterization in Solution and in the Solid State
Author(s) -
Ma Guibin,
Kritikos Mikael,
Glaser Julius
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200105)2001:5<1311::aid-ejic1311>3.0.co;2-w
Subject(s) - chemistry , monoclinic crystal system , crystallography , thallium , metal , platinum , ethylenediamine , raman spectroscopy , bond length , single crystal , crystal structure , stereochemistry , inorganic chemistry , organic chemistry , catalysis , physics , optics
Three neutral binuclear platinum−thallium compounds containing a direct and “naked” (unsupported by ligands) metal−metal bond have been prepared in dimethyl sulfoxide (DMSO). The compounds have the formula [(NC) 5 Pt−Tl(en) n −1 ] ( n = 1−3, for compounds 1 , 2 and 3 , respectively) and were found to exist in solution by means of multinuclear NMR ( 195 Pt, 205 Tl, 13 C and 1 H) and Raman spectroscopy. The compounds exhibit very large single bond 195 Pt− 205 Tl spin‐spin coupling constants of 48−66 kHz. In addition, the solid state analogues of 1 and 3 , [(NC) 5 Pt−Tl(DMSO) 4 ](DMSO) and [(NC) 5 Pt−Tl(en) 2 ](DMSO) 2 , were synthesized and their structures determined by single crystal X‐ray diffraction. The metal−metal bond lengths of Pt−Tl are 2.6131(4) Å and 2.6348(5) Å in compounds 1 and 3 , respectively. Crystal data for compound 1: monoclinic, space group Cc (No. 9), Z = 4, a = 17.2367(14), b = 9.5560(11), c = 17.7941(15) Å, β = 100.551(10)°, V = 2881.4(5) Å 3 , T = 110(1) K; and for compound 3: monoclinic, space group P 2 1 (No. 4), Z = 2, a = 9.3167(14), b = 12.3007(13), c = 11.4586(16) Å, β = 112.318(16)°, V = 1214.8(3) Å 3 , T = 110(1) K.