{Dimethyl [(phenylsulfonyl)amido]phosphato-κ2 O,O′}bis(triphenylphosphane-κP)copper(I)

In the title complex, [Cu(C8H11NO5PS)(C18H15P)2], the CuI ion is coordinated by two triphenylphosphane molecules and two O atoms of the chelating dimethyl(phenylsulfonyl)amidophosphate anion, generating a squashed CuO2P2 tetrahedron. In the six-membered chelate ring, the Cu, P and O atoms are almost coplanar (r.m.s. deviation = 0.024 Å), with the N and S atoms displaced in the same direction, by 0.708 (5) and 0.429 (2) Å, respectively.

In the title complex, [Cu(C 8 H 11 NO 5 PS)(C 18 H 15 P) 2 ], the Cu I ion is coordinated by two triphenylphosphane molecules and two O atoms of the chelating dimethyl(phenylsulfonyl)amidophosphate anion, generating a squashed CuO 2 P 2 tetrahedron. In the six-membered chelate ring, the Cu, P and O atoms are almost coplanar (r.m.s. deviation = 0.024 Å ), with the N and S atoms displaced in the same direction, by 0.708 (5) and 0.429 (2) Å , respectively.

Introduction
Coordination chemistry of structural analogs of β-diketones has been widely studied during last 30 years. Among them, sulfonyl phosphoramides (SAPh) bearing a S(O) 2 NHP(O) structural fragment and different substituents at sulfur and phosphorus atoms were first synthesized by Kirsanov (Kirsanov, 1965). These compounds are extensively used in medicine as bactericidal agents (Xu & Angell, 2000) and in agriculture as pesticides (Kishino & Saito, 1979). Recently, coordination compounds of lanthanides and 3d metals with SAPhs behaving as bidentate O,O-donor chelating ligands have been reported (Moroz, et al., 2009;Moroz, et al., 2012;Trush, et al., 2011). As our contribution to the study of coordination compounds of 3d metals based on SAPh, we synthesized and structurally characterized a copper(I)- and PPh 3 is triphenylphosphane}. Complexes of Cu I have useful luminescent properties, they can be used in microelectronics and as catalysts of homolytic C-Hal (Hal = Cl, Br) bond cleavage in polyhaloalkanes (Nagashima, et al., 1993;Nondek, et al., 1987;Tarkhanova, et al., 2001;Zazybin, et al., 2006). Triphenylphosphane molecule was used to prevent cluster formation during complexation reaction.
The molecular structure of I is shown in Figure1. Van der Waals contacts exist between molecules of I in the crystal structure. The coordination environment of the Cu ion is a distorted tetrahedron (2+2). The values for the bond angles around the central atom are in the range from 88.9 (1)° to 129.94 (6)°. The coordination polyhedron consists of two phosphorus atoms from PPh 3 molecules and two oxygen atoms from the phosphoryl and the sulfonyl groups of L -, which is coordinated in bidentate chelate mode forming with central ion a six-membered chelate ring. The later coordination mode is typical for the deprotonated structural analogs of β-diketones, SAPh and CAPh (carbacylamidophosphates) (Gawryszewska, et al., 2011;Yizhak, et al., 2013;Kariaka, et al., 2013;Amirkhanov, et al., 2014). It has already been observed for [Cu(PPh 3 ) n L 1 ] based on N-acylamidophosphinate ligands (Verat, et al., 2006) and for (PPh 3 ) 3 CuI (Barron, et al., 1987) that the number of the coordinated PPh 3 molecules to the central ion has the main influence on the Cu-P bond lengths. As in the present compound the Cu I atom coordinates two PPh 3 , the Cu-P distances of 2.234 (1), 2.238 (1)Å are in good agreement with the values observed for the complexes containing two PPh 3 ligands (Yang, et al., 2001;Zabirov, et al., 2003;Verat, et al., 2006).

Experimental
The synthesis of HL was carried out according to previously published procedure (Moroz, et al., 2009).

Refinement
The H atoms were attached to carbon atoms geometrically. The H atoms were refined with riding constraints (C-H in the range 0.93-0.98Å, and U iso (H) lie in the range 1.2-1.5 times U eq of the parent atom). Crystal data, data collection and structure refinement details are summarized in Table 1.  Structural representation of I with atom numbering scheme and 50% probability thermal ellipsoid. The H atoms are omitted for clarity.

{Dimethyl [(phenylsulfonyl)amido]phosphato-κ 2 O,O′}bis(triphenylphosphane-κP)copper(I)
Crystal data [Cu(C 8 H 11  Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > 2σ(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.