Structure of 2-methyl-3-phenyl-3-[(tri-p-tolyl)germyl] propanoic acid, (p-CH3C6H4)3GeCH(Ph)CH(Me)CO 2H. CHCl3

Imtiaz-ud-Din, Muhammad Mazhar, Saqib Ali, Sarim Dastgir, Kieran C. Molloy*, Mary F. Mahon

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

9 Citations (Scopus)

Abstract

In the title compound, one molecule of CHCl3, is also present in each asymmetric unit. The germanium adopts a distorted tetrahedral coordination geometry [C-Ge-C: 106.5(1) - 111.7(1)o]. Ge-C bond lengths between the germanium and the three p-tolyl groups are identical within experimental error [1.951 (3) - 1.955(3) Å], however Ge-C(22) of the substituted propanoic acid is significantly longer [1.997(3) Å]. The molecule dimerises through hydrogen bonds between carboxylic acid groups, in a conventional manner. The hydrogen bond is relatively strong [O(1)...O(2′): 2.661(2); H(2A)-O(1′): 1.81(4) Å; <O(2)-H(2A)-O(1): 161(4)o] and delocalisation of the double-bond character renders the two C-O bond lengths indistinguishable [C(31)-O(1): 1.255(4); C(31)-O(2): 1.260(4)Å]. The mode of dimerisation thus contrasts with the situation in the related species Cl3GeCH(Ph)CH2CO2H where chlorine atoms act as the hydrogen bond acceptors. The solvent3(CHCl3) is loosely associated with the carboxylic acid group [H(32)...O(2): 2.53 Å] though this length, along with <C(32)-H(32)...O(2) (129.5o), rules out any meaningful hydrogen bond.

Original languageEnglish
Pages (from-to)315-316
Number of pages2
JournalMain Group Metal Chemistry
Volume25
Issue number5
DOIs
Publication statusPublished - 2002
Externally publishedYes

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