Synthesis and Structural Characterization of the Tetrakis(methimazolyl)borates Li[Bmt4] and [Ru(p‐cymene)(Bmt4)][PF6]

Kunz, Kerstin; Bolte, Michael; Lerner, Hans‐Wolfram

doi:10.1002/zaac.200900116

Cited by 5 publications

(1 citation statement)

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“…66 Lithium tetrakis(methimazolyl)borate has been synthesised from the reaction of Li[BH 4 ] with four equivalents of methimazole and characterised an X-ray structural analysis. 67 The solution structure of an N-lithio(triphenyl) phosphazene (Ph 3 PNLi) mixed aggregate with lithium bromide (LiBr) has been elucidated by multinuclear NMR measurements ( 1 H, 6 Li, 7 Li, 13 C and 31 P). The structure consists of two dimers [Li(m-Z)] 2 (Z = Br, NPR 3 ) linked through LiX (X = N, Br) bridges.…”

Section: Group 15 Donor Ligandsmentioning

confidence: 99%

Alkaline and alkaline earth metals

Hill¹

2010

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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This chapter provides a non-critical overview of research advances involving the elements of Groups 1 and 2 during the calendar year 2009. As was the case in previous years, coverage will concentrate upon topics centred around the synthesis, structures and applications of coordination compounds of these elements. This self-imposed restriction will necessarily result in the omission of numerous advances in other branches of chemistry and, for this, the author wishes to apologise in advance. HighlightsConcerns over energy supply and storage have resulted in enhanced interest in the application of s-block compounds, either as components of MOF structures or in the synthesis of amidoborane derivatives, as hydrogen storage media. [10][11][12]83,[124][125][126] The study of lower oxidation state alkaline earth [M(I)] species has also gathered momentum with reports of further examples of Mg-Mg bonded species and their reactivity, [129][130][131][132] as well as a unique Ca(I) complex. 141 The application of Group 2 complexes in molecular catalysis has also continued to attract intense international attention. 105,152,[175][176][177][178][179][180][181][182][183]

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Section: Group 15 Donor Ligandsmentioning

confidence: 99%

Alkaline and alkaline earth metals

Hill¹

2010

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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The Thermal Stability of Tris(methimazolyl)borates and Their Germanium Complexes

et al. 2014

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A series of methimazole-based soft scorpionate anions ([RTm Me ] -, R = H, Ph, Me, nBu) bearing substitution at the bridgehead boron have been used to produce a series of germanium complexes of general formulae [Ge(RTm Me ) 2 ]I 2 . Structural analyses of the germanium complexes by X-ray crystallography reveal that they all contain an octahedral S 6 coordination sphere. The scorpionate anions (as their Li or Na salts) and their germanium complexes have been studied by thermogravimetric analysis. This analysis suggests that the degradation pathway for the free scorpionate anions dif- [a]2569 fers from that of the complexes. Both pathways involve the loss of a methimazole ring thereby supporting the view that cleavage of the boron-nitrogen bonds can occur under thermally aggressive conditions. As expected, the presence of the germanium alters the degradation profile of the anion. In contrast to the free anions, the four complexes all display a similar mechanism for degradation. Although the presence of the germanium enforces a conformational change in the anions, its presence does not significantly increase the stability of the boron-nitrogen bonds. Figure 1. Soft scorpionate ligands and some alternative heterocycles used in their synthesis. [1][2][3][4][5][6][7][8][9] Eur.

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The impact of ion pair association upon the ¹H NMR spectra of cationic complexes akin to Grubbs catalysts

Schiemenz

2010

Magnetic Reson in Chemistry

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A reconsideration of the (1)H NMR spectra of cationic transition metal complexes exhibiting the features of cyclophanes on the basis of Mislow's classification of topic groups arrives at the conclusion that the spectral changes triggered by chiral counterions reflect an intracationic diastereotopication of enantiotopic protons rather than the existence of pairs of long-lived diastereomeric ion pairs.

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Synthesis and Structural Characterization of the Tetrakis(methimazolyl)borates Li[Bmt₄] and [Ru(p‐cymene)(Bmt₄)][PF₆]

Cited by 5 publications

References 42 publications

Alkaline and alkaline earth metals

Alkaline and alkaline earth metals

The Thermal Stability of Tris(methimazolyl)borates and Their Germanium Complexes

The impact of ion pair association upon the ¹H NMR spectra of cationic complexes akin to Grubbs catalysts

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Synthesis and Structural Characterization of the Tetrakis(methimazolyl)borates Li[Bmt4] and [Ru(p‐cymene)(Bmt4)][PF6]

Cited by 5 publications

References 42 publications

Alkaline and alkaline earth metals

Alkaline and alkaline earth metals

The Thermal Stability of Tris(methimazolyl)borates and Their Germanium Complexes

The impact of ion pair association upon the 1H NMR spectra of cationic complexes akin to Grubbs catalysts

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Synthesis and Structural Characterization of the Tetrakis(methimazolyl)borates Li[Bmt₄] and [Ru(p‐cymene)(Bmt₄)][PF₆]

The impact of ion pair association upon the ¹H NMR spectra of cationic complexes akin to Grubbs catalysts