Synthesis and Structure of Benzyltriethylammonium Trichlorogermanate(II)

Abstract

The reaction of equimolar quantities of G eC h • dioxane with [BzEt3N]+ C P in tetrahydronaphthaline gives high yields of [BzEt3N]+ [G eC h]~. The asymmetric unit of the monoclinic single crystals (from CH 2 CI2 , space group P2i/c, Z = 8) are comprising two pairs of crystallo graphically independent cations and anions, each with very similar molecular dimensions. The isolated [G eC b]-anions have a trigonal pyramidal structure with narrow Cl-Ge-Cl angles in the range from 93.41(5) to 98.27(5)° and Ge-Cl distances between 2.293(2) and 2.305(2) A. This structure is thus very similar to that of the isoelectronic A sCb molecule and of the [SeCl3 ]+ cation.

Redetermination of the crystal structure of benzyltriethylammoniumchloride monohydrate at 200 K – localization of hydrogen atoms, C13H24ClNO

“…Itscrystaland molecular structure have been reported earlier already, however, no hydrogen atoms have been taken into account for the refinement procedure [1].A dditionally, the respective data collection was conducted at room temperature only. Crystal and molecular structures for aseries of complex chlorido-based anions based, among others, on tellurium [2], antimony [3], cobalt [4],tin [5], iron [6], vanadium [7] and germanium [8] featuring the cationic part of the title compound as the counterion are apparent in the literature. The title compound is the chloride of a quartenary ammonium cation.…”

Isomers in the Chemistry of Germanium Coordination Compounds

“…Another one [22] contains two types of isomerism, distortion and configuration. Remainders [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] contain two crystallographic independent molecules differ mostly by degree of distortion.…”

“…(The first number in parenthesis is e.s.d., and the second is maximum deviation from the mean). The mean Ge -Cl bond distances in [5] are 2.301 (2.3) and 2.299 (2.6) Å and in [6] 2.273 (7,5) and 2.278 (7,17) Å.…”

“…Three of them contain germanium in its +2 oxidation state and all belong to the monoclinic class [5][6][7]. Each Ge(II) atom is three coordinated.…”

“…-anions have trigonal pyramidal structure with Cl -Ge -Cl angles in [5] with the mean values of 96.07 (3,78) o (molecule 1) and 96.04 (3, 2.63) o molecule 2; and in [6] 95. 6 (5.3) o (molecule 1) and 96.5 (4,5) o (molecule 2). (The first number in parenthesis is e.s.d., and the second is maximum deviation from the mean).…”