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Synthesis, Structure, and Polarized Optical Spectra of a New Fluoromanganate(III): [(H 3 N(CH 2 ) 2 ) 2 NH 2 ] 2 [MnF 5 (H 2 O)] 3
Author(s) -
Elías Carlos,
Fuentes Jesús,
Núñez Pedro,
Rodríguez Vicente Daniel,
Jacobs Ute,
Massa Werner
Publication year - 1998
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(1998120)624:12<2001::aid-zaac2001>3.0.co;2-4
Subject(s) - crystallography , octahedron , monoclinic crystal system , chemistry , hydrogen bond , crystal structure , infrared spectroscopy , stereochemistry , molecule , organic chemistry
The synthesis and crystal structure of a new fluoromanganate(III), [(H 3 N(CH 2 ) 2 ) 2 NH 2 ] 2 [MnF 5 (H 2 O)] 3 , is reported. The unit cell is unusually large: monoclinic, P2 1 /c (no. 14), a = 41.0512(13) Å; b = 9.6469(4) Å; c = 12.8021(7) Å; β = 91.927(4)°; Z = 8, R = 0.0627 and wR 2 = 0.1347. The [MnF 5 (H 2 O)] 2– anions are octahedral with a strong distortion along the F–Mn OH 2 axes due to the Jahn‐Teller effect. A very rich intermolecular hydrogen bond framework is present, leading to chains of octahedra linked by double‐hydrogen bonds. The polarized optical spectra on single crystals are explained in terms of the intraconfigurational d 4 transitions split by a ligand field of C 4v symmetry.