title: Metal Complexes with Very Large Dipole Moments: the Anionic Carborane Nitriles 12-NC-CB11X11(-) (X = H, F, CH3) as Ligands on Pt(II) and Pd(II).
abstract: The anionic nitriles 1-R-12-NC-CB11H10(-) (R = H, CH3, I, COOH), 12-NC-1-H-CB11Me10(-), and 12-NC-1-H-CB11F10(-) were prepared, and three of them were examined for complex formation with (Et3P)2Pt(II) and (Et3P)2Pd(II). Several stable internally charge-compensated zwitterionic complexes were obtained and characterized. RI-BP86/SV(P) calculations suggest that their dipole moments exceed 20 D. An attempt to measure the dipole moments in solution failed due to insufficient solubility in solvents of low polarity.
authors.affiliation: Institute of Organic Chemistry and Biochemistry AS CR, v.v.i. , Flemingovo nám. 2, 16610 Prague, Czech Republic.
authors.forename: Filip
authors.initials: F
authors.lastname: Šembera
authors.affiliation: Institute of Organic Chemistry and Biochemistry AS CR, v.v.i. , Flemingovo nám. 2, 16610 Prague, Czech Republic.
authors.forename: Jan
authors.initials: J
authors.lastname: Plutnar
authors.affiliation: Institute of Organic Chemistry and Biochemistry AS CR, v.v.i. , Flemingovo nám. 2, 16610 Prague, Czech Republic.
authors.forename: Alexander
authors.initials: A
authors.lastname: Higelin
authors.affiliation: Institute of Organic Chemistry and Biochemistry AS CR, v.v.i. , Flemingovo nám. 2, 16610 Prague, Czech Republic.
authors.forename: Zbyněk
authors.initials: Z
authors.lastname: Janoušek
authors.affiliation: Department of Inorganic Chemistry, Charles University , Hlavova 2030, 12843 Prague 2, Czech Republic.
authors.forename: Ivana
authors.initials: I
authors.lastname: Císařová
authors.affiliation: Institute of Organic Chemistry and Biochemistry AS CR, v.v.i. , Flemingovo nám. 2, 16610 Prague, Czech Republic.|Department of Chemistry and Biochemistry, University of Colorado , Boulder, Colorado 80309-0215, United States.
authors.forename: Josef
authors.initials: J
authors.lastname: Michl