Crystal and molecular structure of diiodo-N,N,N?,N?-tetramethylthiuramdisulphidemercury(II)

Abstract

The crystal and m olecular structure o f diiodo-N jN .N '.N '-tetram ethylthiuram disulphidem ercuryQ I), H gI2(S2C N (C H 3)2)2, has been determ ined by a three-dimensional X -ray analysis. The com pound crystallizes in the m onoclinic space group P 2 i/c w ith the unit cell dimensions a = 7-957 ± 4 , b = 22-639 ± 7 , c = 9-956 ± 6 A and /} = 112-14 ± 5°;Z = 4. Intensities were obtained w ith an autom atic diffractometer. T he structural param eters were refined by least-squares m ethods to a conventional R factor o f 0-044 for 1294 non-zero observed reflexions. T he m ercury is in distorted tetrahedral coordination w ith two iodine and two sulphur atom s. The H g-I distances are 2.654 ± 2 and 2-661 ± 2 A; the Hg-S distances are 2-651 ± 7 and 2-882 ± 7 A. T he thiuram disulphide ligand consists o f two planar units S2C N C 2, nearly perpendicular to each other. B ond distances o f the ligand are com pared w ith distances in tetraalkylthiuram disulphide molecules an d agree w ith infrared observations.

Crystal and molecular structure of 3,5-bis(N,N-diethylimonium)-1,2,4-trithiolane-tetraiododi-?-iododiinercurate(II)

“…The terminal Hg-I bond lengths are the same as those found in H gl2(tds) (Beurskens et al, 1971) and in [S(CH3)3 ]2Hgl4 (Fenn, 1966). The bridging bond lengths are significantly longer, as is to be expected.…”

“…lb) (Brinkhofï et al, 1969), which could be oxidized further to a positive ion, denoted by (dtc2)2+ . In previous Communica tions, the syntheses and the crystal structure determinations of H gl2(tds) com plexes were reported (Brinkhoff, 1970;Beurskens et al, 1971). Brinkhoff (1970) 184 P .…”

Heavy Metal Uptake by Herbs. V. Metal Accumulation and Physiological Effects Induced by Thiuram in Ocimum basilicum L.

“…Notable, those changes are more evident for basil planted in mineral soil A as compared to organic soil B with higher buffering capacity. Additionally, migration of metals may be influenced by the formation of sparingly water-soluble metal-fungicide complexes (Beurskens et al 1971 ; Zhao et al 2003 ). In particular, the latter are presumable responsible for the high manganese uptake and translocation in plants cultivated on mineral soil A. Thiuram impact on metal migration is highly dependent on its persistence and activity in soil.…”

The novel crystal and molecular structure of bis[bis(2-pyridyl) disulfide]copper(I) perchlorate

“…N( 50) 6766 ( 7) 3594 ( 4) 3966 ( 12) 42 ( 7) 13 (3) 95 ( 20) 4 (3) 6 (10) 3( 6) 2) 21 (1) 85 ( 6) 10 (1) 18 (3) 1 (2) C( 58) 5336 ( 8) 3738 ( 5) 8089 ( 15) 37 ( 8) 16 (3) 110 (25) -6 ( 4) 16 (11) -9 (7) C( 59) 4774 ( 10) 4156 ( 6) 8922 ( 14) 76( 11) 23 (4) 95 ( 25) 10( 6) 32 ( 14) 5 (8) C( 60) 4188 ( 10) 4622 ( 6) 8125 ( 19) 71 ( 12) 20 (4) 204 ( 33) 4 (5) 46 (16) -9 (9) C( 61) 4168 ( 10) 4654 ( 6) 6434 ( 19) 82 ( 12) 15 (4) 199 (34) 3( 5)…”