Verbindungen des germaniums und zinns

Weidenbruch, Manfred; Schlaefke, Josephin; Peters, Karl

doi:10.1016/0022-328x(91)86330-s

Cited by 23 publications

(10 citation statements)

References 8 publications

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“…The molecule adopts a syn-orientation with eclipsed groups. The Sn-Sn bond is short in comparison with similar syn-oriented molecules [tetra-tbutyl-1,2-bis(2,4,6-triisopropylphenyl)distannane, 3.034 Å ] [24]. The Sn-N distance is very long, almost the same as the longest one found in Ph 2 SnCl 2 -pyrazine (2.965 Å ) [25].…”

Section: Crystal Structure Of Distannanementioning

confidence: 71%

New distannanes containing the chiral 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand

Rupnicki

Urbańczyk‐Lipkowska²,

Stepien³

et al. 2005

Journal of Organometallic Chemistry

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Section: Crystal Structure Of Distannanementioning

confidence: 71%

New distannanes containing the chiral 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand

Rupnicki

Urbańczyk‐Lipkowska²,

Stepien³

et al. 2005

Journal of Organometallic Chemistry

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“…There are nineteen derivatives which contain tin and tungsten atoms together [57,68,[79][80][81][82][83][84][85][86][87][88][89][90][91][92]. In fifteen of these the tin and tungsten have a direct bond with bond distances ranging from 270.…”

Section: Figure 2 Structure Of [Chbusn^-v-s2cpcy 3 )([I-cimo(co)2(pcmentioning

confidence: 99%

“…6(1) pm [80] to 283. The tin stereochemistry varies from trigonal-planar [83,93] [57,[79][80][81][82][84][85][86][88][89][90][91][92], trigonal-bipyramidal [81,82,87] to pseudo-octahedral [68], The tungsten environments include pseudo-octahedral [57,[81][82][83]86,87], seven-coordinate [84,85,89], semi-sandwiched [68,88,90] and sandwich [80]. The tin stereochemistry varies from trigonal-planar [83,93] [57,[79][80][81][82][84][85][86][88][89][90][91][92], trigonal-bipyramidal [81,…”

Section: Figure 2 Structure Of [Chbusn^-v-s2cpcy 3 )([I-cimo(co)2(pcmentioning

confidence: 99%

Heterometallic Tin Compounds: Classification and Analysis of Crystallographic and Structural Data: Part 1. Dimeric Derivatives

Holloway¹,

Melnı́k²

2001

Main Group Metal Chemistry

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This review covers the crystallographic data for dimeric tin compounds with one other metal atom centre, following the pattern of the previous reviews on tin coordination and organometallic compounds. Over two hundred and forty such derivatives have been characterised, twenty three with a non-transition heterometal atom, one with an actinide metal and the rest with a transition metal atom. The predominant geometries of the tin and the heteroatom are discussed along with the relationships between atom size, bond distances and bond angles. The occurrences of direct metal-metal bonds, and examples of isomerism are illustrated CONTENTS 0. ABBREVIATIONS 1. DIMERIC COMPOUNDS 2.1 Α-Group (Non-Transition) MetalsCrystallographic and structural data for some twenty three tin heterometallic compounds with sub-group A. or non-transition metals, are summarised in Table 1. These are listed in their Periodic Group order, with the typical metals of each group first, and then the Sn-M distance. The first eight derivatives contain tin with lithium [6][7][8][9][10][11][12][13], with the tin in the +2 oxidation state and lithium in its usual +1 oxidation state. The shortest Sn-Li bond 136 Brought to you by | Purdue University Libraries Authenticated Download Date | 6/11/15 11:28 PM Main Group Metal Chemistry Vol. 24, Nr. 3, 2001 distance is found in a yellow derivative [6] at 277.6(4) pm. Here, three Ph(Bu')CN ligands bridge the lithium and tin atoms via their Ν atoms, with Sn-N-Li bridge angles of 81,5( 1A slightly longer Sn-Li distance of 278.4(4) pm is found in a cyclometalated dimer [7] leid together by bridging Ο atoms of three 2,6diphenylphenoxide ligands, with mean Sn-O-Li bridge angles of 84.5(2)°.Two crystallographically independent molecules within the asymmetric units of Ph3SnLi(pmdeta) [8] differ essentially by degree of distortion. While the Sn(II) atom is coordinated by three phenyl groups, the Li(I) atom utilises the tridentate pmdeta moiety. Four coordination is accomplished by each metal via a direct Sn-Li bond of 286.1(7) and 288.2(7) pm in the respective distortion isomers. Another colourless derivative [9] also contains two crystallographically independent molecules. A direct Sn-Li bond of 289(4) and 297(5) pm, respectively, hold together the N3Sn and LiCb moieties.A lithium atom in the next derivative [ 10] ties two amido groups together to generate an N-donor arrangement which forms part of the N3Sn pyramid, one corner of which is the Sn(II) atom. The structure of a red derivative [11] involves a {(Me3Si)3}2Sn unit coordinated to a LiCl(thf)3 moiety via a chlorine bridge. The tricoordinated Sn(II) atom is also at one corner of a pyramid. A tricoordinated tin atom is also found in a metallocyclic arrangement [12] of a four membered (Sn-P-Li-P) ring with average Sn-P-Li angles of 89.5(7)°.The Sn centre in a sandwich style complex [13] is attached to two distorted η-cp ligands and the planar Ν atom of a (Me3Si)2N group, as seen in Figure 1. The tin atom has a distorted pyramidal geometry, and the cp(Y) ligand h...

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“…The first has two RCOO" groups in a syn-syn arrangement bridging a pair of SnC 2 moieties [3][4][5][6]8]. The third group has no bridging ligands [9,11,[13][14][15]18,19,21,22,24,28], The third group has no bridging ligands [9,11,[13][14][15]18,19,21,22,24,28],…”

Section: Dimers Containing a Tin-tin Bondmentioning

confidence: 99%

“…In the third group of Sn 2 +6 derivatives, there are several examples with two tetrahedral tin atoms held together by a direct Sn-Sn bond; SnC 3 [9,11,[13][14][15]18,22,24,28], SnC 2 CI [13,22] and SnC 2 Br [18,21]. In another example [18a] two trigonal-bipyramidal units, SnC 2 NCI are linked, and overall the range of values for the Sn-Sn bond are from 275.9(4) to 303.…”

Section: Fig 1 Structure Of Sn 2^-ac) 2 (Ph) 4 [3] Fig 2 Structurmentioning

confidence: 99%

Tin Organometallic Compounds: Classification and Analysis of Crystallographic and Structural Data: Part Ii. Dimeric Derivatives

Holloway¹,

Melnı́k²

2000

Main Group Metal Chemistry

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This review covers the crystallographic data of organotin compounds containing two tin centres, with a view to identifying correlations between properties and structure. Almost two hundred and fifty such compounds are included, of which almost thirty contain Sn 2 +6 units with a direct Sn-Sn bond, the shortest being 269.1(1) pm. There are ten compounds with tin in the +2 oxidation state, with a shortest Sn(ll)-Sn(ll) bond distance of 276.4(2) pm. The remainder of the compounds contain tin(IV), and the shortest Sn(IV)-Sn(IV) distance is 294 pm. The predominant geometries for tin(IV) are tetrahedral and trigonal bipyramidal. Distortion and cis-trans isomerism are found, the former being most common. In one example of distortion isomerism crystallographically independent molecules occur within the same unit. Several types of bridging are observed between the tin centres. Relationships between bond distances, ligand size and angles are discussed in the respective sections. The most common bridge donor atom is oxygen. The most common carbon donor ligands are phenyl and methyl groups.

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Verbindungen des germaniums und zinns

Cited by 23 publications

References 8 publications

New distannanes containing the chiral 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand

New distannanes containing the chiral 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand

Heterometallic Tin Compounds: Classification and Analysis of Crystallographic and Structural Data: Part 1. Dimeric Derivatives

Tin Organometallic Compounds: Classification and Analysis of Crystallographic and Structural Data: Part Ii. Dimeric Derivatives

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