%0 Journal Article %1 Sarkar.2003b %A Sarkar, Biprajit %A Kaim, Wolfgang %A Schleid, Thomas %A Hartenbach, Ingo %A Fiedler, Jan. %D 2003 %J Zeitschrift fuer Anorganische und Allgemeine Chemie %K carbonyl complex complex;rhenium crystal potential prepn prepn;redox pyrazinyltetrazine rhenium structure %N 7-8 %P 1353--1357 %T 3,4-Bis(2-pyrazinyl)-1,2,4,5-tetrazine. A new multifunctional ligand and its syn,fac-configurated bis(tricarbonylchlororhenium) complex %V 629 %X The new ligand 3,6-bis(2-pyrazinyl)-1,2,4,5-tetrazine (bpztz) was synthesized, structurally characterized, and reacted with Re(CO)5Cl to the dinuclear (m-bpztz)Re(CO)3Cl2. Crystal structure anal. (P21/c, a 12.9965(5), b 5.6349(2), c 6.9025(3), b 92.511(2)°, Z = 2, 1160 independent reflections, R1 = 0.0803, wR2 = 0.1579 (all data), another structure soln. with a higher R-value is also given) exhibits a fac-tricarbonyl arrangement and the coordination of each metal atom by one N atom from the tetrazine ring and by N1 of pyrazine. The N4 atoms of the pyrazine rings remain free. The chloride ligands adopt a syn-position relative to the central ligand plane, in contrast to the related complex (m-abpy)Re(CO)3Cl2 (abpy = 2,2'-azobispyridine). Reversible redn. to the IR and ESR spectroelectrochem. detectable (m-bpztz)Re(CO)3Cl2·- occurs at a potential of -0.31 V vs. ferrocene. on SciFinder(R)

@article{Sarkar.2003b, abstract = {The new ligand 3,6-bis(2-pyrazinyl)-1,2,4,5-tetrazine (bpztz) was synthesized, structurally characterized, and reacted with Re(CO)5Cl to the dinuclear [(\textgreek{m}-bpztz){Re(CO)3Cl}2]. Crystal structure anal. (P21/c, a 12.9965(5), b 5.6349(2), c 6.9025(3), \textgreek{b} 92.511(2)°, Z = 2, 1160 independent reflections, R1 = 0.0803, wR2 = 0.1579 (all data), another structure soln. with a higher R-value is also given) exhibits a fac-tricarbonyl arrangement and the coordination of each metal atom by one N atom from the tetrazine ring and by N1 of pyrazine. The N4 atoms of the pyrazine rings remain free. The chloride ligands adopt a syn-position relative to the central ligand plane, in contrast to the related complex [(\textgreek{m}-abpy){Re(CO)3Cl}2] (abpy = 2,2'-azobispyridine). Reversible redn. to the IR and ESR spectroelectrochem. detectable [(\textgreek{m}-bpztz){Re(CO)3Cl}2]·- occurs at a potential of -0.31 V vs. ferrocene. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Sarkar, Biprajit and Kaim, Wolfgang and Schleid, Thomas and Hartenbach, Ingo and Fiedler, Jan.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/29e413ed84e4ade598926c6e57f08d59c/huebleriac}, interhash = {c7fe798bc5935258989440c131194172}, intrahash = {9e413ed84e4ade598926c6e57f08d59c}, issn = {0044-2313}, journal = {Zeitschrift fuer Anorganische und Allgemeine Chemie}, keywords = {carbonyl complex complex;rhenium crystal potential prepn prepn;redox pyrazinyltetrazine rhenium structure}, number = {7-8}, pages = {1353--1357}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {3,4-Bis(2-pyrazinyl)-1,2,4,5-tetrazine. A new multifunctional ligand and its syn,fac-configurated bis(tricarbonylchlororhenium) complex}, volume = 629, year = 2003 }