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Transition metall complexes of amidinourea and related ligands. II. Tetrahedral Cobalt(II) Complexes with O‐propyl‐1‐amidinoureas
Author(s) -
Syamal A.
Publication year - 1976
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19764190213
Subject(s) - cobalt , alkyl , chemistry , crystallography , tetrahedron , magnetic moment , magnetic susceptibility , spectral line , molecular electronic transition , stereochemistry , inorganic chemistry , physics , molecule , organic chemistry , condensed matter physics , astronomy
New cobalt(II) complexes of the formula [Co(AA) 2 ]X 2 (where AA = O‐n‐propyl‐1‐amidinourea and O‐iso‐propylamidinourea, X = Cl or Br) have been synthesized and characterized by elemental analysis, magnetic susceptibility measurements and electronic spectra. The complexes are all violet in colour and posses magnetic moments in the range 4.4–4.5 BM. Electronic spectral and magnetic data identify the complexes as tetrahedral ones. Tetrahedral complexes can only be prepared with O‐alkyl‐1‐amidinoureas containing higher alkyl groups. The electronic spectral data indicate the strong field character of these ligands.