trans-Bis(nitrato-κO)bis(1,10-phenanthroline-κ²N,N′)manganese(II)

Abstract

Key indicators: single-crystal X-ray study; T = 298 K; mean (C-C) = 0.003 Å; disorder in main residue; R factor = 0.045; wR factor = 0.101; data-to-parameter ratio = 13.5.In the title compound, [Mn(NO 3 ) 2 (C 12 H 8 N 2 ) 2 ], the Mn II atom lies on a twofold rotation axis, and is six-coordinated in a distorted trans-N 4 O 2 octahedral environment by four N atoms from two 1,10-phenanthroline ligands and two O atoms from two nitrate anions. The nitrate anion is disordered about a twofold rotation axis with fixed occupancy factors of 0.5. In the crystal, molecules are linked by weak C-HÁ Á ÁO hydrogen bonds and -stacking interactions [centroid-centroid distance = 4.088 (5) Å ] into a three-dimensional supramolecular network. Related literatureFor the isotypic Cd compound, see: Shi et al. (2004). ExperimentalCrystal data [Mn(NO 3 Data collectionBruker SMART CCD area-detector diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 1996) T min = 0.819, T max = 1.000 13250 measured reflections 2748 independent reflections 2367 reflections with I > 2(I) R int = 0.028

Synthesis, Crystal Structures, Thermal and Antimicrobial Properties of Mn(II) Complexes of 1,10-Phenanthroline With Some Co-Ligands

“…(Table 4) and face-to-face π-π [C9-C4 3.369(6) Å; symmetry code -1/2+x,-1/2+y,3/2-z] stacking interactions (Janiak 2000), between adjacent phen ligands, stabilize the structure and assemble complex 1 into an interesting 3D supramolecular structure. It is noteworthy to mention that a polymorph of 1 is known (Saphu, Chanthee et al 2012). The comparative crystal data of the complexes are presented in Table 5.…”