C–H…X (X = F, Cl, Br, I) Versus π-Stacking in the Crystal Packing of Compounds Containing the {M(tpy)X3} Motif
نویسندگان
چکیده
Analysis of the data in Cambridge Structural Database (CSD) for compounds containing an {M(tpy)X3} motif (tpy = 2,2’:6’,2”-terpyridine, M any metal, X F, Cl, Br, I) reveals 17 isostructural mononuclear [M(tpy)X3] crystallizing without lattice solvent; both face-to-face π-stacking pyridine rings and C–H3/H3’…X hydrogen bonding appear to be equally important. Regardless coordination number (CN 6, 7 or 8) nuclearity (mono- dinuclear), a recurring packing feature other unit is presence bifurcated Cl…H3/H3’ interactions, complemented some cases by Cl…H5’/H3” consistent with acidic H3, H3’, H5’, H3” atoms coordinated tpy ligand. Octahedral [M(tpy)F3] complexes crystallize as hydrates strong F…H–OH dominating crystal packing.
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ژورنال
عنوان ژورنال: Crystals
سال: 2023
ISSN: ['2073-4352']
DOI: https://doi.org/10.3390/cryst13060885