The Structure of Mn(acac) 3 —Experimental Evidence of a Static Jahn–Teller Effect in the Gas Phase | Zendy

Berger Raphael J. F. | Zendy; Girichev Georgiy V. | Zendy; Giricheva Nina I. | Zendy; Petrova Angelika A. | Zendy; Tverdova Natalya V. | Zendy

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The Structure of Mn(acac) 3 —Experimental Evidence of a Static Jahn–Teller Effect in the Gas Phase

Author(s) -

Berger Raphael J. F.,

Girichev Georgiy V.,

Giricheva Nina I.,

Petrova Angelika A.,

Tverdova Natalya V.

Publication year - 2017

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201708498

Subject(s) - acetylacetone , octahedron , manganese , tetragonal crystal system , chemistry , crystallography , conformational isomerism , thermal decomposition , planarity testing , gas phase , electron diffraction , crystal structure , inorganic chemistry , diffraction , molecule , organic chemistry , physics , optics

The structure of free manganese(III) tris(acetylacetonate) [Mn(acac) 3 ] was determined by mass‐spectrometrically controlled gas‐phase electron diffraction. The vapor of Mn(acac) 3 at 125(5) °C is composed of a single conformer of Mn(acac) 3 in C 2 symmetry with the central structural motif of a tetragonal elongated MnO 6 octahedron and 47(2) mol % of acetylacetone (Hacac) formed by partial thermal decomposition of Mn(acac) 3 . Three types of Mn−O separations have been refined (r h1 =2.157(16), 1.946(5), and 1.932(5) Å. We have found no indication for a significant deviation of the ‐C−C−C−O−Mn−O‐ six‐membered rings from planarity, which is observed in the solid state.

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