Vibrational spectra of dithioaryl acid complexes of nickel(II), palladium(II), platinum(II), and zinc(II), their sulfur addition products. X-ray crystal structure of the dimer of bis(dithiocumato)platinum(II), a material with a 2.87-Ang. metal-metal bond

1972 ◽  
Vol 11 (12) ◽  
pp. 3000-3009 ◽  
Author(s):  
J. M. Burke ◽  
J. P. Fackler
Author(s):  
Jacques Levisalles ◽  
Francoise Rose-munch ◽  
Henri Rudler ◽  
Jean-Claude Daran ◽  
Yves Jeannin

2008 ◽  
Vol 63 (5) ◽  
pp. 530-536 ◽  
Author(s):  
Olaf Reckeweg ◽  
Francis J. DiSalvo

Single crystals of Ca11N6[CN2]2 (dark red needles, tetragonal, P42/mnm (no. 136), a = 1456.22(5), and c = 361.86(2) pm, Z = 2), Ca4N2[CN2] (transparent yellow needles, orthorhombic, Pnma (no. 62), a = 1146.51(11), b = 358.33(4), and c = 1385.77(13) pm, Z = 4) and Ca[CN2] (transparent, colorless, triangular plates, rhombohedral, R3̅m (no. 166), a = 369.00(3), and c = 1477.5(3) pm, Z = 3) were obtained by the reaction of Na2[CN2], CaCl2 and Ca3N2 (if demanded by stoichiometry) in arc-welded Ta ampoules at temperatures between 1200 - 1400 K. Their crystal structures were re-determined by means of single crystal X-ray structure analyses. Additionally, the Raman spectra were recorded on these same single crystals, whereas the IR spectra were obtained with the KBr pellet technique. The title compounds exhibit characteristic features for carbodiimide units with D∞h symmetry (d(C-N) = 121.7 - 123.8 pm and ∡ (N-C-N) = 180°). The vibrational frequencies of these units are in the expected range (Ca11N6[CN2]2: νs = 1230, νs = 2008; δ = 673/645/624 cm−1; Ca4N2[CN2]: νs = 1230, νs = 1986; δ = 672/647 cm−1; Ca[CN2]: νs = 1274, νs = 2031, δ = 668 cm−1). The structural results are more precise than the previously reported data, and with the newly attained Raman spectrum of Ca11N6[CN2]2 we correct data reported earlier.


1984 ◽  
Vol 23 (25) ◽  
pp. 4386-4388 ◽  
Author(s):  
Chi Ming Che ◽  
Thomas C. W. Mak ◽  
Harry B. Gray

1975 ◽  
Vol 6 (20) ◽  
pp. no-no
Author(s):  
NICHOLAS J. TAYLOR ◽  
YAU S. WONG ◽  
PETER C. CHIEH ◽  
ARTHUR J. CARTY

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