Lanthanides and actinides

Rogers, Robin D.; Rogers, Linda

doi:10.1016/0022-328x(91)80149-e

Cited by 20 publications

(2 citation statements)

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“…Although the crystal structures of a number of 7rcomplexes of holmium are known (Schumann, Loebel, van der Helm & Hossain, 1988;Schumann, Esser, Loebel, Dietrich, van der Helm & Ji, 1991;Rogers & Rogers, 1991), there are no structural reports on any of the holmacarborane complexes. Therefore, we have carried out an X-ray diffraction analysis on a singlecrystal sample of (1) and report herein the results of this study.…”

Section: = C-sime 3 • = Hmentioning

confidence: 99%

“…Although the bridging of the sandwiched metal atom (Hol in Fig. Nonetheless, the distorted tetrahedral geometry of the centrally located Ho atom (Hol. (Rogers & Rogers, 1991;Evans, 1985Evans, , 1987Wilkinson, Stone & Abel, 1982;Wilkinson, Gillard & McCleverty, 1987;Cotton & Wilkinson, 1988) and their carborane analogues known to date . Nonetheless, the distorted tetrahedral geometry of the centrally located Ho atom (Hol. (Rogers & Rogers, 1991;Evans, 1985Evans, , 1987Wilkinson, Stone & Abel, 1982;Wilkinson, Gillard & McCleverty, 1987;Cotton & Wilkinson, 1988) and their carborane analogues known to date .…”

Section: = C-sime 3 • = Hmentioning

confidence: 99%

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A Dinuclear Holmium(III) `Carbons Apart' Carborane Cluster, [C34H92B8Cl4Ho2Li2N6Si4].C10H8

Zhang¹,

Wang²,

Maguire³

et al. 1996

Acta Crystallogr C

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Section: = C-sime 3 • = Hmentioning

confidence: 99%

Section: = C-sime 3 • = Hmentioning

confidence: 99%

A Dinuclear Holmium(III) `Carbons Apart' Carborane Cluster, [C34H92B8Cl4Ho2Li2N6Si4].C10H8

Zhang¹,

Wang²,

Maguire³

et al. 1996

Acta Crystallogr C

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Synthese und Struktur des ersten dreikernigen Halbsandwich‐Carborangadolinium (III)‐Clusters

1992

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7] Der Ligand 1 wurde durch Acylierung von tert-Leucinol mit Dimethylmalonsauredichlorid und anschlieDende Cyclisierung mit Triphenylphosphan-Tetrachlorkohlenstoff-Triethylamin nach dem von Vorbriiggen et al. beschriebenen Verfahren (H. Vorbriiggen, K. Krolikiewicz, Tetrahedron Left. 1981, 22,4471 -4474) in r60% Gesamtausbeute hergestellt. [8] R. G. Solomon, J. K. Kochi, J. Am. Chem. Soc. 1973,95, 3300-3310. [9] Kristallographische Daten: Trigonal, P3(1)21, a = 11.632(2), c = 15.554(7)~,ar=90.0,~=90.0,y=120.O0,T=193K,Z=3.Dieschweren Atome wurden anisotrop verfeinert, Wasserstoffatome wurden an berechneten Positionen plaziert und anisotrop verfeinert. Die endgiiltigen Werte fur 136 Parameter aus 1228 zur Verfeinerung verwendeten Reflexen mit E"0 > 3 a g betrugen R = 0.063 und R, = 0.072. Weitere Einzelheiten zur Kristallstrukturuntersuchung konnen beim Direktor des Cambridge Crystallographic Data Centre, University Chemical Laboratory, Lensfield Road, GB-Cambridge CB2 IEW (England), unter Angabe des vollstandigen Literaturzitats angefordert werden.

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Synthesis and Structure of the First Trinuclear, Half‐Sandwich Carboranegadolinium(III) Cluster

Oki

Zhang

Hosmane

1992

Angew. Chem. Int. Ed. Engl.

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The ligand 1 was prepared by acylation of tert-leucinol with 2,2-dimethylpropane-l,3-dioyl dichloride followed by cyclization with triphenylphosphanexarbon tetrachloride-triethylamine, according to the procedure of Vorbriiggen (H. Vorhriiggen, K. Krolikiewicz, Tefruhedron Letf. 1981,22, 4471 -4474), which proceeds in 2 6 0 % overall yield. 181 R. G. Salomon, J. K. Kochi, J. Am. Chem. Soc. 1973, 95, 3300-3310.Crystal data: trigonal, P3(1)21, u = 11.632(2) A, c = 15.554(7) A, a = 90.0", ! 3 = 90.0", y = 120.0", T = 193 K, 2 = 3. The heavy atoms were refined anisotropically, and the hydrogen atoms were placed in calculated positions and refined anisotropically. The final residuals for 136 variables refined against 1228 data for which F, ' > 3uF: were R = 6.3%, final R, =7.2%. Further details of the crystal structure can be obtained from the Director of the Cambridge Crystallographic Data Centre, University Chemical Laboratory. Lensfield Road, Cambridge CB2 1 EW (England) on quoting the full journal citation.

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Lanthanides and actinides

Cited by 20 publications

References 213 publications

A Dinuclear Holmium(III) `Carbons Apart' Carborane Cluster, [C34H92B8Cl4Ho2Li2N6Si4].C10H8

A Dinuclear Holmium(III) `Carbons Apart' Carborane Cluster, [C34H92B8Cl4Ho2Li2N6Si4].C10H8

Synthese und Struktur des ersten dreikernigen Halbsandwich‐Carborangadolinium (III)‐Clusters

Synthesis and Structure of the First Trinuclear, Half‐Sandwich Carboranegadolinium(III) Cluster

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