caa a22 4500 475760484 CHVBK 20180406123549.0 cr unu---uuuuu 170329e20001001xx s 000 0 eng 10.1007/BF02496354 doi (NATIONALLICENCE)springer-10.1007/BF02496354 Synthesis, structures, and properties of 3,6-di- tert -butyl- o -benzosemiquinone complexes of copper( i ) with 1,5-diaza-3,7-diphosphacyclooctanes [Elektronische Daten] [A. Karasik, A. Krashilina, A. Gubaidullin, I. Litvinov, V. Cherkasov, O. Sinyashin, G. Abakumov] Two new 3,6-di-tert-butyl-o-benzosemiquinone complexes of copper(i) (2a and2b) with 1,3,5,7-tetraphenyl-1,5-diaza-3,5-diphosphacyclooctane (1a) and 1,5-dibenzyl-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane (1b), respectively, were synthesized. Their structures in solution and in the crystalline state were studied. According to the results of X-ray diffraction analysis, the copper(i) atom in molecules2a and2b is in a pseudotetrahedral environment and is directly coordinated to two P atoms of the diazadiphosphacyclooctane ligand and two O atoms of the benzosemiquinone ligand. In complex2a, ligand1a adopts a chair-boat conformation typical of all complexes with eight-membered cyclic 1,5-donors studied previously. Unlike ligand1a, the ligand in complex2b adopts a chair-chair (crown) conformation identical with that of the free ligand. Both complexes are paramagnetic in the solid state and in solutions. The parameters of the isotropic ESR spectra of complexes2a and2b are typical of four-coordinateo-semiquinone copper(i) complexes with bidentate bisphosphine ligands. Based on analysis of the isotropic ESR spectra, it was suggested that compound2b in solutions exists as two isomers, which differ in the conformation of the eight-membered heterocycle (chair-boat or chair-chair). Kluwer Academic/Plenum Publishers, 2000 1,5-diaza-3,7-diphosphacyclooctanes nationallicence copper( i ) nationallicence o -semiquinones nationallicence complex formation nationallicence ESR spectroscopy nationallicence X-ray diffraction analysis nationallicence conformation nationallicence Karasik A. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut Krashilina A. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhnii Novgorod, Russian Federation aut Gubaidullin A. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut Litvinov I. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut Cherkasov V. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhnii Novgorod, Russian Federation aut Sinyashin O. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut Abakumov G. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhnii Novgorod, Russian Federation aut Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/10(2000-10-01), 1782-1788 1066-5285 49:10<1782 2000 49 11172 https://doi.org/10.1007/BF02496354 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02496354 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karasik A. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut NATIONALLICENCE 700 1- Krashilina A. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhnii Novgorod, Russian Federation aut NATIONALLICENCE 700 1- Gubaidullin A. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut NATIONALLICENCE 700 1- Litvinov I. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut NATIONALLICENCE 700 1- Cherkasov V. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhnii Novgorod, Russian Federation aut NATIONALLICENCE 700 1- Sinyashin O. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan, Russian Federation aut NATIONALLICENCE 700 1- Abakumov G. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhnii Novgorod, Russian Federation aut NATIONALLICENCE 773 0- Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/10(2000-10-01), 1782-1788 1066-5285 49:10<1782 2000 49 11172 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer