caa a22 4500 465775314 CHVBK 20180323111940.0 cr unu---uuuuu 170327e19900201xx s 000 0 eng 10.1007/BF01032236 doi (NATIONALLICENCE)springer-10.1007/BF01032236 Neutral, cationic and dicationic seven-coordinate complexes of molybdenum(II) and tungsten(II) containing mono- and bidentate nitrogen donor ligands [Elektronische Daten] [Paul Baker, Lesley Howells, Stuart Fraser, Gordon Rogers, Martin Snowden] Summary: The seven-coordinate complexes [MI2(CO)3(NCMe)2] (M=Mo or W) react with two equivalents of L(L=py, 4Me-py, 3Cl-py or 3Br-py) or one equivalent of NN {NN=2,2′-bipyridine(bipy), 1,10-phenanthroline(phen), 5,6-dimethyl-1, 10-phenanthroline (5,6-Me2-1, 10-phen), 5-Nitro-1, 10-phenanthroline (5-NO2-1, 10-phen) and C6H4(o-NH2)2 (o-diam) (for M=Mo only)} in CH2Cl2 at room temperature to give the substituted products [MI2(CO)3L2] or [MI2(CO)3(NN)] (1-17) in high yield. The compounds [MI2(CO)3(NCMe)2] react with two equivalents of NN (for M=W, NN=bipy; for M=Mo, NN=phen) to give the dicationic salts [M(CO)3(NN)2]2I(18-19). The compounds [MI2(CO)3(NCMe)2] (M=Mo or W) react with two equivalents of 5,6-Me2-1, 10-phen to yield the monocationic dicarbonyl compounds [MI(CO)2(5,6-Me2-phen)2]I (20 and21). The dicationic mixed ligand complexes [M(CO)3(bipy)(5,6-Me2-phen)]2I (22 and23) are prepared by reacting [MI2(CO)3(NCMe)2] with one equivalent of bipy, followed by anin situ reaction with 5,6-Me2-1, 10-phen to afford the products22 and23. The complexes (1-23) described in this paper have been characterised by elemental analysis (C, H and N), i.r. spectroscopy and, in selected cases,1Hn.m.r. spectroscopy. Magnetic susceptibility measurements show the compounds to be diamagnetic. Chapman and Hall Ltd., 1990 Baker Paul Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut Howells Lesley Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut Fraser Stuart Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut Rogers Gordon Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut Snowden Martin Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut Transition Metal Chemistry Kluwer Academic Publishers 15/1(1990-02-01), 71-74 0340-4285 15:1<71 1990 15 11243 https://doi.org/10.1007/BF01032236 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01032236 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baker Paul Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut NATIONALLICENCE 700 1- Howells Lesley Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut NATIONALLICENCE 700 1- Fraser Stuart Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut NATIONALLICENCE 700 1- Rogers Gordon Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut NATIONALLICENCE 700 1- Snowden Martin Department of Chemistry, University College of North Wales, LL57 2UW, Bangor, Gwynedd, UK aut NATIONALLICENCE 773 0- Transition Metal Chemistry Kluwer Academic Publishers 15/1(1990-02-01), 71-74 0340-4285 15:1<71 1990 15 11243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer